Entries |
Document | Title | Date |
20080205912 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - In an image forming apparatus, papers are taken in one by one using an auto document feeder (ADF) provided with a media sensor to determine the type of papers and successively carried to the reading position while the type of the papers are determined and displayed on the control panel. By inputting the type of image forming media corresponding to the type being displayed from the control panel, an image is formed at a desired image quality. | 08-28-2008 |
20080205913 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREFOR - An image forming apparatus that is capable of normally performing second side printing on a transfer material, even if the transfer material put on standby after completion of first side printing is pulled out by a user. A transfer material having image formed on its first side is fed until it is partly exposed to the outside of a printer, and is then fed to a refeeding path in the printer and further fed to a standby position prior to image formation on the second side of the transfer material. When it is detected that the transfer material caused to stop at the standby position is pulled out by a user, a warning to stop pulling out the transfer material is given to the user. | 08-28-2008 |
20080219682 | IMAGE FORMING APPARATUS, CONTROLLER, COMPUTER READABLE MEDIUM AND IMAGE FORMING CONDITION ADJUSTMENT METHOD - An image forming apparatus is provided with: an image forming unit that forms an image on a medium according an image forming condition; a speed changing unit that changes an image forming speed of the image forming unit between a plurality of image forming speeds including a first image forming speed; an adjusting unit that adjusts the image forming condition set in the image forming unit; a measuring unit that measures an elapsed state after the image forming condition is adjusted for the last time at the first image forming speed in the image forming unit, and outputs a measured value indicative of the elapsed state; and a determination unit that determines, according to the elapsed state, whether or not to adjust the image forming condition before the image forming unit starts forming an image at the first image forming speed. | 09-11-2008 |
20080232827 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus and an image forming method in the invention include a scanner unit, an image forming unit, and a discarding unit. When time during which a recording medium having an image formed thereon is discharged to a paper discharge tray has exceeded a set time set in advance, the recording medium is discarded to the discarding unit to prevent the recording medium from being inspected by a third party and secure confidentiality. | 09-25-2008 |
20080240743 | Sheet-conveying apparatus and method for detection of multiple-sheet feeding thereof - A sheet-conveying apparatus and a method for detecting multiple-sheet feeding thereof are provided. The sheet-conveying apparatus includes a passageway, a sheet-transporting mechanism and a sheet-detecting device. The sheet-detecting device includes a first transmitter, a first receiver, a second transmitter and a second receiver. The first receiver is for receiving a first signal of a first intensity transmitted from the first transmitter. The second receiver is for receiving a second signal of a second intensity transmitted from the second transmitter. The second intensity of the second signal is not equal to the first intensity of the first signal. The sheet-detecting device further includes an analysis unit for determining if the multiple sheets are conveyed in the passageway, according to the intensities of the signals respectively received by the first receiver and the second receiver. | 10-02-2008 |
20080240744 | IMAGE FORMING APPARATUS AND METHOD TO CONTROL THE SAME - An image forming apparatus includes an output control unit to change an output of an optical sensor to collectively recognize a plurality of print processes for a print job. The output control unit includes a first actuator to recognize whether paper is present in a printing medium cassette and a second actuator to recognize whether paper is being conveyed. This makes it possible to recognize whether paper is present in a printing medium cassette and whether paper is being conveyed based on the output of the optical sensor, thereby reducing a financial burden and preventing a reduction in a task efficiency of an optical sensor installation. | 10-02-2008 |
20080279571 | Method for Processing Medium, Image Processing Apparatus, And Printer Apparatus - A printer apparatus is disclosed. The printer includes a medium feeding passage for conveying a medium; print head for performing a spacing and for performing a printing processing on the medium; a detector for detecting a first end position in a widthwise direction of the medium at a first position in a medium conveyance direction and for detecting a second end position in the widthwise direction of the medium at a second position in the medium conveyance direction; and a comparator for comparing the first end position with the second end position detected with the detector. The control of the print head is performed according to the compared result from the comparator. | 11-13-2008 |
20080292327 | IMAGE FORMING DEVICE - An image forming device of the present invention includes searching section that is configured to search whether a sheet of paper having a suitable size for an essential print object in order to print out the essential print object. In addition, the image forming device includes selecting section and printing section. The selecting section is configured to perform a selection of a sheet of secondary suitable-sized paper, the size of which is larger than the sheet of paper having the suitable size for the essential print object, when the sheet of paper having the suitable size for the essential print object does not exist. The printing section is configured to print the essential print object on the sheet of secondary suitable-sized paper. Accordingly, the essential print object is to be absolutely printed on some form of paper. | 11-27-2008 |
20080292328 | Image-forming machine - An object of the present invention is, in an image-forming machine equipped with plural paper feeders that feed paper to a drum unit at different paper feed speeds due to the difference in the shapes of paper traveling routes, to control the image-forming machine so as to select a paper feeder suitable for the condition of printing-speed-priority. A stencil printing machine has three paper feeders; a paper feed table, a first tray, and a second tray. The maximum allowable printing speeds to a drum unit of the three paper feeders: differ from each other in accordance with the difference in the shapes of traveling routes; increase in the order of the paper feed table, the first tray, and then the second tray; and are stored as data. When a user carries out printing at the setting of speed-priority, a control unit of the machine and a paper feeder selection device select the paper feeder of the highest maximum allowable image-forming speed and carry out the printing. | 11-27-2008 |
20080310863 | PAPER TYPE DETERMINATION DEVICE - A paper type determination device of the invention forms images of plural light spots modulated at frequencies different from one another and aligned about a reference point on one surface of a sheet of paper subjected to determination. A photodetection device is disposed on the other surface side of the sheet of paper. In the photodetection device, a detection field of view having a center common with the reference point is provided, so that light coming within the detection field of view from the respective light spots by passing through the sheet of paper is detected. Signals superimposed in a detection signal from the photodetection device are distinguished on the basis of respective frequencies by a wave filter circuit. A diffusing characteristic of the sheet of paper is obtained from amplitudes of the signals distinguished on the basis of the respective frequencies, and the paper type is determined on the basis of this diffusing characteristic. | 12-18-2008 |
20090003848 | PRINTING APPARATUS TO PREVENT MULTIFEED RELATED PRINTING ERRORS AND METHOD THEREOF - A printing apparatus includes a multifeed sensor to detect whether printing paper sheets are multifed, a measuring unit to measure an interval between the multifed paper sheets, if the multifeed sensor detects that the printing paper sheets are multifed, and a control unit to delay printing using the measured interval so that a lastly fed printing paper sheet is printed. As a result, a printing error due to multifeed of two or more printing paper sheets can be avoided. | 01-01-2009 |
20090022505 | SHEET TRANSPORT APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A sheet transport apparatus includes a pair of rollers for transporting a sheet and a sheet detection device for detecting the sheet transported by the pair of rollers. The sheet detection device includes a flag that is displaceable when urged by the sheet transported by the pair of rollers and a single-chip acceleration sensor attached to the flag to detect the arrival of the sheet. When the sheet is brought into contact with the flag to rotate the flag, the acceleration sensor detects the roll acceleration of the flag so as to determine the timing of stopping the pair of rollers on the basis of a detection signal. | 01-22-2009 |
20090034992 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes an endless belt type transfer member configured to carry an image formed with developer of a plurality of colors, a drive roller configured to drive the transfer member by rotating while contacting the transfer member, a first detection unit configured to detect a mark provided on the transfer member, a second detection unit configured to detect the mark at a position different from the position of the first detection unit in a conveyance direction of the transfer member, and a correction unit configured to correct a conveyance speed of the transfer member using a difference between respective times at which the first and second detection units detect the mark. The first and second detection units are located such that an interval between respective positions at which the first and second detection units detect the mark is an integral multiple of a perimeter of the drive roller. | 02-05-2009 |
20090110410 | METHODS FOR MOVING A MEDIA SHEET WITHIN AN IMAGE FORMING DEVICE - The present application is directed to methods for determining the location and movement of a media sheet within an image forming device. In one embodiment, the media sheet is positioned within an input area of the device. A pick roller is rotated to move the sheet from the input area and into a media path. An encoder roller may be positioned in contact with the sheet to detect the actual movement of the sheet from the input area. A controller may determine the expected amount of movement based on the movement of the pick roller and compare this amount with an actual amount of movement based on the movement of the encoder roller. | 04-30-2009 |
20090162080 | Image Forming Apparatus - An image forming apparatus is provided. The image forming apparatus includes a fixing unit that is configured to fix a developing material on a sheet; a plurality of a pair of rollers that discharge the sheet conveyed from the fixing unit; and a sheet detection unit that detects the sheet conveyed from the fixing unit, the sheet detection unit comprising an actuator for detecting the sheet conveyed from the fixing unit, wherein the actuator of the sheet detection unit is disposed between the fixing unit and the plurality of the pair of the rollers on a conveyance path and is disposed within a width of one of the rollers when viewed from a sheet conveyance direction. | 06-25-2009 |
20090185813 | IMAGE FORMING APPARATUS - A disclosed image forming apparatus includes a carriage having a head for jetting droplets; a pattern forming unit configured to form, on a belt, a pattern used for detecting displacement of landing positions of the droplets; a reading unit configured to scan the belt before the pattern formation to output a first result, and scan the pattern to output a second result; a correcting unit configured to correct the displacement based on the second result; a frequency analyzing unit configured to calculate frequencies of the belt and amplitudes of respective frequency components based on the first result; and a peak frequency calculating unit configured to calculate peak frequencies of the belt based on the frequencies of the belt and the amplitudes of the frequency components, the peak frequencies being frequency components whose amplitude exceeds a predetermined level. The pattern is formed at a frequency different from the peak frequencies. | 07-23-2009 |
20090190936 | Image Forming Device, Printing Medium Supplying Method, and Computer-Readable Recording Medium - In an image forming device including a control unit to control the image forming device to perform a job of image formation, the control unit is arranged so that, when a size of a printing medium detected by a detection unit is not in agreement with a printing medium size indicated by information contained in a printing request, the control unit causes the printing medium to be ejected from the image forming device without causing an image formation unit to form an image on the printing medium, and causes an image holding unit to hold data of the image. | 07-30-2009 |
20090196634 | IMAGE FORMING APPARATUS - An area calculating unit calculates an image area of a toner image formed on a sheet recording member. A behavior detecting unit detects behavior of the recording member fed out of a conveying nip formed by a pair of conveying members. A thickness obtaining unit obtains thickness information of the recording member. A width obtaining unit obtains width information of the recording member. An index calculating unit calculates an index value indicating windability of the recording member with respect to the conveying members based on the width information as well as the image area, the behavior, and the thickness information. | 08-06-2009 |
20090232521 | IMAGE FORMING APPARATUS, METHOD OF CONTROLLING THE IMAGE FORMING APPARATUS, AND STORAGE MEDIUM - An image forming apparatus which enables even a user who is not well informed about the mechanism of the image forming apparatus to easily perform operation check on a component roller. The image forming apparatus is provided with a sheet conveying mechanism including a plurality of component rollers. A CPU of a controller of the image forming apparatus selects a component roller to be subjected to operation check from the component rollers. Then, the CPU determines a sheet conveying path to pass the selected component roller. Further, the CPU controls the sheet conveying mechanism such that a sheet is conveyed along the determined conveying path. The CPU detects the conveyance status of a sheet while the sheet is being conveyed along the conveying path. | 09-17-2009 |
20090245818 | IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, IMAGE FORMING METHOD AND COMPUTER READABLE MEDIUM STORING PROGRAM - An image forming apparatus includes: a paper feeding device that supplies paper; a reception unit that receives a print instruction including output control information in which a paper type is designated by page; a setting unit that sets a priority in paper change by paper type based on the output control information included in the print instruction received by the reception unit; an instruction unit that issues a paper change instruction based on the priority set by the setting unit; and a printing device that performs printing on paper of a type designated by the instruction unit. | 10-01-2009 |
20090245819 | Image forming apparatus - An image forming apparatus includes an image forming portion for forming an image using developer; a transfer unit for transferring the image to a medium transported thereto; a first detection unit disposed at a specific position for detecting the image thus transferred; and a second detection unit disposed to face the first detection unit for detecting a distance to the medium so that the first detection unit detects a detection result of the second detection unit. | 10-01-2009 |
20090274473 | CONVEYER-MEMBER CONTROL DEVICE, IMAGE FORMING APPARATUS, AND DRIVE CONTROL METHOD - A detecting unit detects a conveying speed of a conveyer member. A driving unit drives the conveyer member. A first control unit performs a first feedback control of the conveying speed based on detected conveying speed and a predetermined target conveying speed. A second control unit detects a rotation speed of the driving unit and performs a second feedback control of the rotation speed based on detected rotation speed and a predetermined target rotation speed. When a determining unit determines that the detecting unit is anomalous, a switching unit switches from the first feedback control to the second feedback control. | 11-05-2009 |
20090297173 | IMAGE FORMING APPARATUS AND DOUBLE-SIDED IMAGE FORMING APPARATUS - The image forming apparatus includes an intermediate transfer member onto which an image is transferred, a transfer part transferring the image formed on the intermediate transfer member onto a transfer, a detection part detecting a transfer which is conveyed, and a both-surface conveying part reversing the transfer with an image being formed on a first surface, and conveying the transfer to the transfer part again, wherein a timing when forming an image on a second surface of the transfer by the image forming part is switched based on a size in a conveying direction of a transfer which is designated and a size of the conveyed transfer. | 12-03-2009 |
20090310980 | PAPER SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS HAVING SAME - A paper sheet conveying apparatus includes: a paper sheet conveying portion that conveys a paper sheet and has an opening; a distance detection portion that projects light to a paper sheet through the opening, receives reflected light from the paper sheet, and detects a distance to the paper sheet; and a cover member that has a light projecting area portion which transmits the projected light therethrough, a light receiving area portion which transmits the reflected light therethrough, and a light block portion which is disposed between the light projecting area portion and the light receiving area portion and blocks flare light reflected by the light projecting area portion, wherein the cover member is disposed at a predetermined distance from a conveying path surface of the paper sheet conveying portion over the same side with respect to the distance detection portion. | 12-17-2009 |
20100021185 | Image Forming Apparatus - An image forming apparatus includes an image forming unit; a transport roller transporting the sheet to the image forming unit; a stacking unit stacking a sheet; a manual feed path extending from a manual feed slot to the transport roller; a feed path extending from the stacking unit to the transport roller; a feed unit transporting the sheet of the stacking unit to the transport roller through the feed path; a first detection unit detecting a sheet inserted into the manual feed path from the manual feed slot; and a control unit, when the first detection unit detects the sheet inserted from the manual feed slot while an operation to feed the sheet of the stacking unit to the image forming unit by the feed unit and the transport roller, and an image forming operation by the image forming unit are executed, aborting the image forming operation. | 01-28-2010 |
20100074635 | PRINTER - A printer for printing a continuous sheet with position detection marks has a mark detection function and a feed amount detection function that are normally enabled. Further, the printer is provided with a mechanism that operates in a sheet feed mode (mark detection mode) that utilizes the mark detection function and a sheet feed mode (feed amount detection mode) that utilizes the set feed amount detection function. If the mark detection function suffers an error, the sheet feed mode is switched from the mark detection mode to the feed amount detection mode, and a printing operation is continued. | 03-25-2010 |
20100111546 | IMAGE FORMING APPARATUS - A sheet size to be set for a sheet feed section, which feeds a sheet, is stored in a memory. If there is a possibility that a sheet is set in the sheet feed section, image formation is not performed on the first sheet fed from the sheet feed section, but the sheet is conveyed and the length thereof in a conveyance direction is detected. If the detected length of the sheet coincides with the sheet size stored in the memory, the sheet is again conveyed to the image formation section and an image is formed. If the detected length of the sheet does not coincide with the sheet size stored in the memory, the sheet is discharged. | 05-06-2010 |
20100119243 | IMAGE FORMING APPARATUS, CONTROL METHOD OF THE IMAGE FORMING APPARATUS, AND PRINTING MEDIUM CONVEYANCE APPARATUS - An image forming apparatus includes a conveyance part; a detecting part; a control part which prints image data on the printing medium based on a detecting signal from the detecting part; a masking part configured to perform a masking process on the detecting signal generated by the detecting part between when the printing medium starts being conveyed from the printing medium receiving part and when the printing medium passes through a designated section; a conveyance distance measuring part configured to measure a conveyance distance of the head end of the printing medium conveyed from a receiving position of the printing medium receiving part; a determining part configured to determine whether the printing medium stops in an uncertain position not detected by the detecting part when the conveyance part stops while the printing medium is being conveyed by the conveyance part; and a masking process section setting part configured to set. | 05-13-2010 |
20100135680 | PAPER WRINKLE SIGN MONITORING DEVICE, PAPER WRINKLE SIGN MONITORING METHOD, AND COMPUTER READABLE MEDIUM - A paper wrinkle sign monitoring device includes: at least one timing detecting unit that is set on a transport path of a printing medium, and that detects transport timing of the printing medium; and a sign output unit that detects a sign of paper wrinkle generation in the transporting time of the printing medium based on the transport timing of the printing medium detected by the timing detecting unit, and that outputs the sign. | 06-03-2010 |
20100150580 | MOVABLE MEDIA TRAY WITH POSITION REFERENCE MARKS - A printing system includes a movable tray for holding recording media. The movable tray includes spaced-apart reference marks for determining distance traveled by the tray. A reference-mark optical detector is positioned to provide a field of view through which the reference marks pass. An identifying-mark optical detector provides a field of view through which media-type identifying marks on a piece of recording medium pass. A signal processor provides an output relative to: a) amount of reference marks passing through the field of view of the reference-mark optical detector, and b) signal variation in a signal provided by the identifying-mark optical detector. A look-up table includes media identification signal patterns that are correlated to corresponding media types. Finally, a comparator compares the output of the signal processor to the media identification signal patterns in the look-up table in order to identify type of recording medium. | 06-17-2010 |
20100158545 | ELECTOPHOTOGRAPHIC BORDERLESS PRINTING METHOD AND APPARATUS - A method and apparatus for determining whether borderless printing can be done based on media type and desired gloss level is provided. Also provided is a method, printer, and system whereby a defect-free borderless print can be achieved regardless of media type and gloss level of the finished print, wherein the method includes pre-heating of the leading edge of the media before it enters a fuser area of the printer. | 06-24-2010 |
20100158546 | ELECTOPHOTOGRAPHIC BORDERLESS PRINTING METHOD AND APPARATUS - A method and apparatus for determining whether borderless printing can be done based on media type and desired gloss level is provided. Also provided is a method, printer, and system whereby a defect-free borderless print can be achieved regardless of media type and gloss level of the finished print, wherein the method includes pre-heating of the leading edge of the media before it enters a fuser area of the printer. | 06-24-2010 |
20100178067 | PRINTING APPARATUS - A printing apparatus including one or more feeding units includes: a sheet size determining unit which determines a sheet size of a sheet, on which print data are printed, in predetermined order; a print control unit which stores a designated size, which is the sheet size determined by the sheet size determining unit, in a storage unit; a feeding unit selector which selects the feeding unit on the basis of the designated size; and a process selection information storing unit which stores process selection information used to designate a process executed by the print control unit. | 07-15-2010 |
20100178068 | IMAGE PRINTING APPARATUS AND TANDEM IMAGE PRINTING METHOD - This invention provides an image printing apparatus including a communication unit which communicatively connects to at least another image printing apparatus, a tandem output mode, a paper feed unit which feeds recording sheets, a comparison and determination unit which compares the information of recording sheets which can be fed from the paper feed unit with paper size information and paper type information in another image printing apparatus which has received by the communication unit in the tandem output mode, and determines a paper size match/mismatch and a paper type match/mismatch, and a mismatch notification unit which notifies a mismatch when one or both of the paper size and the paper type exhibits a mismatch upon receiving a determination result from the comparison and determination unit. | 07-15-2010 |
20100189448 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - The image forming apparatus includes: an image holder that is movably provided; a first image forming unit that forms a first image on the image holder; a second image forming unit that forms a second image on the image holder including the first image formed thereon; a transfer portion that transfers, onto a recording medium, the first image and the second image formed on the image holder; a supply unit that transports the recording medium and that supplies the recording medium to the transfer portion; an acquisition unit that acquires information on a position of displacement on the recording medium in a transport direction of the recording medium, the displacement occurring between the first image and the second image transferred onto the recording medium; and an adjustment unit that changes a supply speed of the recording medium at the supply unit on the basis of the information on the position. | 07-29-2010 |
20100209124 | IMAGE FORMING APPARATUS - An image forming apparatus which is capable of detecting the direction and amount of an image shift in the main scanning direction without wasting toner, to thereby provide a higher-quality image with reduced running costs. A conductor is disposed such that the conductor partially overlaps an electrostatic latent image line formed on a photosensitive drum in a manner extending in a main scanning direction of the photosensitive drum, while moving relative to the electrostatic latent image line. The conductor generates induced current by the relative motion. An image shift in the main scanning direction is detected based on a result of measurement of the induced current generated by the conductor. | 08-19-2010 |
20100221022 | METHOD AND APPARATUS FOR INDUCING SUBSTRATE TRANSPORT FAULTS IN IMAGE FORMING MACHINES - A method of inducing a substrate transport fault in an image forming apparatus having a substrate transport assembly includes prompting a user to provide one or more substrate transport fault conditions, starting an image forming job, and inducing a substrate transport fault during the image forming job in accordance with the one or more fault conditions. An image forming machine is described having a substrate transport assembly for moving substrate sheets through the image forming apparatus for forming images thereon, a User Interface for prompting a user to provide one or more substrate transport fault conditions, and a controller for inducing a substrate transport fault in the image forming apparatus in accordance with the one or more substrate transport fault conditions. | 09-02-2010 |
20100221023 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus and an image forming method in the invention include a scanner unit, an image forming unit, and a discarding unit. When time during which a recording medium having an image formed thereon is discharged to a paper discharge tray has exceeded a set time set in advance, the recording medium is discarded to the discarding unit to prevent the recording medium from being inspected by a third party and secure confidentiality. | 09-02-2010 |
20100247115 | APPARATUS FOR MEASURING LENGTH OF RECORDING MATERIAL, IMAGE FORMING APPARATUS, AND PROGRAM - An apparatus for measuring a length of a recording material, includes: a rotating member that rotates while contacting a conveyed recording material; a detecting section that detects a rotation amount of the rotating member; an information obtaining section that obtains at least one of information of an image formed on the recording material and information of the recording material; and a calculating section that calculates a length of the recording material in a direction of the conveyance, based on an output from the detecting section and the information obtained by the information obtaining section. | 09-30-2010 |
20100296823 | DUAL ENGINE SYNCHRONIZATION - A method of synchronizing the timing of a plurality of physically coupled print engines wherein the receiving sheet is inverted between a first and a second print engine including determining a position of one or more timing marks on a first primary imaging member in a first print engine having a first timing, directing a receiving sheet from the first print engine to a second primary imaging member in a second print engine having a second timing, determining an actual arrival time of the receiving sheet relative to a fixed position in the second print engine, and calculating an optimum timing offset using the one or more timing marks on the first primary imaging member, the actual arrival time of the receiving sheet and the distance of the non-printable area to the fixed position in the second engine. | 11-25-2010 |
20100310261 | IMAGE FORMING APPARATUS AND SHEET CONVEYING METHOD FOR THE IMAGE FORMING APPARATUS - In an image forming apparatus and a sheet conveying method for the image forming apparatus, the image forming apparatus including: a sensor arranged halfway in a sheet conveying path and configured to output a signal corresponding to thickness of a sheet; a sheet feeder configured to extract sheets one by one; and a storage configured to store weighting and a threshold for each type and store an outlet corresponding to the sheet feeing unit, when a difference of thickness that is an absolute value of a difference between weighting of set thickness and weighting of detected thickness is equal to or larger than a threshold, the image forming apparatus discharges the sheet to the outlet of the sheet corresponding to the sheet feeder without causing the sheet to pass through a transfer device. | 12-09-2010 |
20100316396 | IMAGE FORMING APPARATUS - In one embodiment, the present invention provides an image forming apparatus that forms a plurality of images using a plurality of image carriers respectively corresponding to the images and stacks those images, the apparatus having a first group to which at least one image carrier among the plurality of image carriers belongs, a second group to which at least one image carrier among the remaining image carriers belongs, and a single detection sensor that detects a first detection information for identifying a rotation timing of the first group image carrier and also detects a second detection information for identifying a rotation timing of the second group image carrier. | 12-16-2010 |
20110064424 | DYNAMIC MEDIA THICKNESS, CURL SENSING SYSTEM - A method and system move a media sheet in a processing direction of a media path from a first nip to a second nip and move the media sheet in the processing direction of the media path from the second nip to a third nip. The method senses, using a sensor positioned between the second nip and the third nip, the position of the media sheet relative to the sensor. The method automatically calculates the amount of curl the media sheet contains based on the difference between the predetermined position and the position of the leading edge of the media sheet (relative to the sensor) as the leading edge of the media sheet passes between the second nip and the third nip, using the processor. Further, the method automatically calculates the thickness of the media sheet based on the difference between the predetermined position and the position of the media sheet (relative to the sensor) as the media sheet passes between the second nip and the third nip, using the processor. | 03-17-2011 |
20110064425 | DEVICE FOR MEASURING LENGTH OF RECORDING MATERIAL, IMAGE FORMING APPARATUS AND COMPUTER READABLE MEDIUM - A device for measuring a length of a recoding material, includes: a rotating body that rotates in contact with a recording material which is transported; a length measuring unit that measures a length of the recording material based on a rotation of the rotating unit; a detecting unit that detects at least one of a rotation and an oblique advance of the recording material; and a correcting unit that corrects a value measured by the length measuring unit based on an output of the detecting unit. | 03-17-2011 |
20110064426 | IMAGE FORMING APPARATUS - An image forming apparatus is provided. The image forming apparatus includes a fixing unit to thermally fix an image transferred onto a sheet thereto, an endless belt to carry the sheet in a feeding path toward the fixing unit, a pattern forming unit to form an image pattern on the belt, a sensor to detect presence of the sheet being carried by the belt, and a judging unit to judge as to whether the sheet is in one-sided alignment, in which the sheet is aligned to one of the widthwise sides in the feeding path based on a result detected by the sensor. | 03-17-2011 |
20110069976 | IMAGE FORMING APPARATUS, RECORDING MEDIUM TRANSPORTATION APPARATUS, RECORDING MEDIUM TRANSPORTATION METHOD AND COMPUTER READABLE MEDIUM - An image forming apparatus includes: an image forming unit forming an image on a recording medium; a recording medium transportation unit transporting, along a transportation route, the recording medium on which the image has been formed by the image forming unit, and interrupting transportation operation for the recording medium in a state where one part of the recording medium is discharged from the transportation route and the other part of the recording medium is held in the transportation route; a detection unit detecting pull out operation by a user for the recording medium containing the other part held in the transportation route by the interruption of the transportation operation by the recording medium transportation unit; and a controller controlling the recording medium transportation unit so that the transportation operation having been interrupted is restarted, upon the detection of the pull out operation by the user by the detection unit. | 03-24-2011 |
20110076035 | IMAGE FORMING APPARATUS AND SHEET CONVEYING METHOD - An image forming apparatus includes a pre-transfer conveying portion that conveys a recording medium, an image bearing member that moves while bearing a toner image, a conveying belt that attracts the recording medium conveyed from the pre-transfer conveying portion and conveys the recording medium at the same speed as the image bearing member, a detecting portion that detects the recording medium attracted to the conveying belt, and a control unit that controls the speed at which the pre-transfer conveying portion conveys the recording medium. On the basis of the detection of the recording medium, the control unit changes the speed of the pre-transfer conveying portion from a speed slower than the speed of the conveying belt to a speed equal to or faster than the speed of the conveying belt, and thereby causes the leading edges of the toner image and the recording medium to coincide. | 03-31-2011 |
20110103808 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a sheet feed unit that feeds a sheet to an image forming unit forming a toner image on the sheet; a fixing unit that fixes the toner image formed in the image forming unit to the sheet; and a control unit that controls the sheet feed unit, when starting duplex image formation for forming both sides of the sheet after an one-side image formation, the control unit retards a timing to cause the sheet feed unit to start the sheet feed operation as the number of sheet with an image formed on one side thereof in the one-side image formation is greater. | 05-05-2011 |
20110103809 | IMAGE FORMING APPARATUS - An image forming apparatus includes a sheet feed unit which feeds a sheet to an image forming unit forming an image on the sheet; a re-transport roller which reverses the sheet with a toner image fixed on the sheet and re-transports the sheet to the image forming unit; and a control unit which controls a sheet feed operation of the sheet feed unit for feeding the sheet, wherein, as the temperature of the re-transport roller sensed by the temperature sensing unit is lower, the control unit retards a timing to cause the sheet feed unit to start the sheet feed operation when a duplex image formation in which the image is formed on both sides of the sheet is performed after a one-side image formation is completed. | 05-05-2011 |
20110116812 | SHEET REGISTRATION FOR A MULTIPASS ELECTROPHOTOGRAPHIC PRINTER - A method and system for printing image documents using a variety of toners where some toners using a multi-development station having two or more development stations. These toners are co-printed prior to fixing, on the receiver by the multi-development station. | 05-19-2011 |
20110116813 | IMAGE FORMING APPARATUS AND IMAGE FORMING SYSTEM EQUIPPED THEREWITH - An image forming apparatus includes: a sheet conveyance section having a sheet storing member to store sheets that have been aligned in a prescribed placing direction, which conveys a sheet stored in the sheet storing member; an image forming section having an image carrier, which forms an image on the image carrier; an image transfer section which transfers the image formed on the image carrier onto a sheet conveyed by the sheet conveyance section; a winding detection section which detects whether or not the sheet conveyed by the sheet conveyance section is wound around the image carrier; and a controller which controls to instruct an operator to conduct a change operation of the placing direction of the sheets stored in the sheet storing member based on a sheet winding detection signal outputted from the winding detection section. | 05-19-2011 |
20110123202 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a belt; a plurality of photosensitive units that contact the belt, are disposed at a predetermined interval in the transportation direction of the belt and transfer marks for image adjustment to the belt, images of different colors being respectively formed on the plurality of photosensitive units; an exposure unit that exposes the photosensitive units by light so that the marks are disposed at the same interval on the belt; a detector that detects the marks transferred to the belt; and an image adjustment unit that performs an image adjustment based on a detection result of the detector. A width and an interval of the marks in the transportation direction are set so that a mark of at least one color does not exist in all contact areas of the belt contacting with the plurality of photosensitive units. | 05-26-2011 |
20110129239 | INSPECTION APPARATUS, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM - Tab positions of tab sheets that are inserted between printed pages while a print job is performed are determined to be correct or incorrect using a control method for controlling an inspection apparatus which is connectable to a printing apparatus. The method includes reading tab sheets conveyed from the printing apparatus, detecting positions of tabs of the tab sheets conveyed from the printing apparatus according to the reading result, and determining whether each of the detected positions is correct or incorrect. | 06-02-2011 |
20110135322 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREOF, AND STORAGE MEDIUM - An image forming apparatus including a plurality of paper feed stages includes a setting unit configured to set a paper type including a plurality of items for each of the plurality of paper feed stages, a storage unit configured to store a paper type history indicating a history of one or more paper types set by the setting unit for each paper feed stage, a control unit configured to acquire the stored paper type history for each paper feed stage, and a display control unit configured to display the acquired paper type history for each paper feed stage in a setting screen for setting the paper type for one of the plurality of paper feed stages to be able to be selected. The setting unit sets, for the paper feed stage, the paper type selected via the setting screen. | 06-09-2011 |
20110135323 | IMAGE FORMING APPARATUS AND COMPUTER-READABLE STORAGE MEDIUM - An image forming apparatus includes a measuring part to measure an area in which a recording agent is to be adhered on a recording medium, for each of segmented regions on the recording medium, a computing part to compute an accumulated area by accumulating the measured area for each segmented region with respect to plural recording media, and a storing part to store the computed accumulated area. A rotating part rotates an image to be formed on the recording medium using the recording agent if the accumulated value in the storing part exceeds a threshold value, and an image forming part forms the rotated image on the recording medium. | 06-09-2011 |
20110135324 | BELT DRIVE APPARATUS AND IMAGE FORMING APPARATUS - A belt drive apparatus, including, an endless belt to be laid across in a tensioned condition between supporting rollers and to travel being in pressure contact with or being separated from a body to receive the pressure contact, a pressure contact/separating state detection section to detect whether the endless belt is in the pressure contact with the body or separated therefrom, a belt position detection section to detect a position of the endless belt in a width direction thereof, a belt abnormality judging section to judge whether the endless belt is in an abnormal position based on a detection result obtained by the belt position detection section and one of judgment values which are set correspondingly to the pressure contact/separating state of the endless belt, and a belt drive control section to control a drive of the endless belt. | 06-09-2011 |
20110164887 | IMAGE FORMING APPARATUS - According to one embodiment, an image forming apparatus includes a setting unit configured to set setting information for forming images on recording media, one or more feeding units configured to store the recording media, a media sensor configured to detect a characteristic value of the recording media stored in the feeding units, an image forming unit configured to form images on the recording media on the basis of a detection result of the media sensor, and a control unit configured to cause, at a time when a feeding unit that feeds the recording media is selected on the basis of the setting from the setting unit, the media sensor to detect a characteristic value of the recording media in the selected feeding unit and cause the image forming unit to satisfy at least one image forming condition on the basis of the detected characteristic value of the recording media. | 07-07-2011 |
20110170882 | STICKING PREVENTING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An image forming apparatus includes a sticking preventing device including a main conveying path connected from a fixing device, a first conveying path connected to the main conveying path, a second conveying path branching from the main conveying path and having a conveying route longer than that of the first conveying path, a switching device provided at a branching point of the first conveying path and the second conveying path and configured to switch a recording-medium conveying route to the first conveying path and the second conveying path, and a temperature sensor provided above a discharge port of the first conveying path and a discharge port of the second conveying path, and a control unit configured to, if the temperature of a recording medium to be discharged detected by the temperature sensor is equal to or higher than the temperature at which sticking occurs, displace the switching device to switch the conveying route from the first conveying path to the second conveying path. | 07-14-2011 |
20110176819 | ROTATION DETECTING DEVICE, SHEET FEEDING DEVICE, AND IMAGE FORMING APPARATUS - An image forming apparatus includes a sheet feeding device ( | 07-21-2011 |
20110200341 | IMAGE FORMING APPARATUS INCLUDING SKEW CORRECTION MECHANISM, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM - An image forming apparatus that can detect a leading edge of a tabbed sheet after skew correction with high accuracy and without increasing a size of the apparatus. A transfer unit transfers a toner image to the sheet, the skew of which having been corrected based on a detection result of a first skew detection unit, while the toner image is controlled to be synchronized with the sheet based on the detection result of the first skew detection unit and a detection result of a second skew detection unit. | 08-18-2011 |
20110217053 | Mark detecting device, adjustment method, and printing apparatus - A mark detecting device detects a positioning mark on a transfer medium based on light that is emitted to and then reflected from the transfer medium. The mark detecting device includes a light emitting unit that emits light to a target position on the transfer medium; a light receiving unit that receives light reflected from the target position; and an adjusting unit that rotatably supports a detecting unit including at least one of the light emitting unit and the light receiving unit about a center of rotation, which passes through the target position, on the transfer medium and adjusts the rotation angle of the detecting unit with respect to the center of rotation. | 09-08-2011 |
20110236040 | IMAGE FORMING APPARATUS AND SHEET CARRYING METHOD FOR IMAGE FORMING APPARATUS - An image forming apparatus includes: a carrying unit which carries a sheet from a sheet supply unit toward a sheet discharge unit; a transfer unit which transfers an image to the sheet; a fixing unit which fixes the image transferred to the sheet by the transfer unit, at a second position in the carrying unit; an acquisition unit which acquires information about the size of the sheet at a third position upstream from the second position in the carrying direction in the carrying unit; and a control unit which controls the carrying unit when the size of the sheet accepted by the acceptance unit is different from the size of the sheet acquired by the acquisition unit, and thus carries the sheet to a fourth position where a rear end of the sheet in the carrying direction is situated downstream from the second position in the carrying direction. | 09-29-2011 |
20110255882 | IMAGE FORMING APPARATUS - An image forming apparatus has a sheet feeding portion which feeds a topmost sheet of sheets stacked on a sheet stacking portion and an image forming portion which forms an image to the sheet fed by the sheet feeding portion. The image forming apparatus also has a moisture-proof member set to a covering position so as to contact with and cover a topmost sheet of sheets stacked on the sheet stacking portion, a moisture-proof member detection portion which determines whether the moisture-proof member is available at the covering position, and a notification portion which notifies the presence or absence of the moisture-proof member at the covering position based on a detection result from the moisture-proof member detection portion. | 10-20-2011 |
20110262151 | IMAGE FORMING APPARATUS, RECORDING MEDIUM DETECTING APPARATUS AND RECORDING MEDIUM DETECTING METHOD - An image forming apparatus according to an embodiment includes an image forming unit which forms an image on a recording medium, and a carrying unit which guides the recording medium to the image forming unit via a first carrying path or a second carrying path. A media sensor is arranged at a part where the first carrying path and the second carrying path merge together, to discriminate the type of the recording medium. The media sensor is movable toward the first carrying path or toward the second carrying path where the recording medium passes. | 10-27-2011 |
20110262152 | METHOD AND APPARATUS OF SHEET CONVEYANCE (SHEET CONVEYANCE CONTROL WITH MEDIA SENSOR) AND IMAGE FORMING APPARATUS - According to one embodiment, a sheet conveying mechanism including a first driving mechanism configured to move a sheet medium to a predetermined position, a second driving mechanism located a fixed distance apart from the first driving mechanism and configured to move the sheet medium to the first driving mechanism, a thickness detecting mechanism located between the first driving mechanism and the second driving mechanism and configured to determine thickness of the sheet medium moving between the driving mechanisms, and a controller configured to change, on the basis of the thickness of the sheet medium detected by the thickness detecting mechanism, start of the first driving mechanism and change a movement amount per unit time of the second driving mechanism. | 10-27-2011 |
20110311240 | IMAGE FORMING APPARATUS - There is a need to provide an image forming apparatus capable of preventing a transfer portion from distorting a toner image on a sheet. Line sensors | 12-22-2011 |
20120027425 | MEDIUM DETECTION DEVICE AND IMAGE FORMATION APPARATUS - A medium detection device includes: a sensor lever configured to rotate corresponding to a travel of a recording medium; a sensor configured to detect the rotation of the sensor lever; a stopper having a guide surface inclined with respect to the movement direction of the sensor lever and configured to stop movement of the sensor lever upon the rotation of the sensor. | 02-02-2012 |
20120027426 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus including an image forming unit forming an image on a recording paper, a registration roller transporting the recording paper to the image forming unit, a post-registration roller detection unit provided at a down stream side of the registration roller in a direction in which the recording paper is transported, the post-registration roller detection unit detecting the recording paper transported by the registration roller and a control unit adjusting a timing in which the image forming unit forms the image on the recording paper based on a timing at which the post-registration roller detection unit detects the recording paper. | 02-02-2012 |
20120063790 | SHEET CONVEYING DEVICE, PRINT SYSTEM, AND SHEET COOLING METHOD - A sheet conveying device that conveys a sheet discharged from an image forming apparatus. The sheet conveying device includes an air intake fan that takes in external air; an air exhaust fan that discharges internal air; a plurality of branched conveying paths which are branched from a conveying path within a range from a sheet entrance to a sheet exit and for which a passing time of the sheet is approximately the same; a conveyance motor that independently conveys the sheet to each one of the branched conveying paths; a conveying path switching unit that switches among the branched conveying paths; and a conveying path control unit that causes the conveying path switching unit to sequentially switch among the branched conveying paths every time the sheet is input from the image forming apparatus. | 03-15-2012 |
20120070160 | MEDIUM TRANSPORT APPARATUS, IMAGE FORMING APPARATUS, METHOD FOR DETERMINING SPLICE ON MEDIUM AND COMPUTER READABLE MEDIUM - A medium transport apparatus includes: a transport unit transporting a belt-shaped medium having plural marks formed in line at predetermined intervals in a transport direction; a detection unit detecting the marks on the medium; and a determining unit determining that a splice exists at a position on the medium if an interval of the marks detected from the medium by the detection unit differs from the predetermined intervals, the position being identified by the marks having the interval different from the predetermined intervals. | 03-22-2012 |
20120076512 | SENSOR, CONVEYING DEVICE, AND IMAGE FORMING APPARATUS - A sensor includes: a light emitting part that emits light; a light receiving part that receives reflected light, which is emitted from the light emitting part, is reflected, and returns; and plural arranged fiber bodies that are disposed on a front side of at least one of the light emitting part and the light receiving part and operate as a filter limiting an emission angle or a light receiving angle. | 03-29-2012 |
20120076513 | CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A conveying apparatus or an image forming apparatus includes: a housing including an opening and closing member that can be opened and closed; a conveying path that conveys an object to be conveyed, at least a part of the conveying path being provided adjacent to an inner side of the opening and closing member; a first detector that detects whether the object is present in a predetermined region and outputs a detection signal corresponding to a result of the detection; and an interlocking mechanism that causes, when the opening and closing member is opened, the first detector to change at least one of a position and a structure of the first detector in mechanically association with movement of opening of the opening and closing member, and to output a detection signal which is the same as a detection signal output when the object is present in the predetermined region. | 03-29-2012 |
20120093524 | METHOD FOR PRINTING AN IMAGE ONTO A SHEET IN A PRINTER - A method of printing an image onto a sheet in a printer having at least one print module and a transport arrangement defining a transport path for transporting sheets through the at least one print module is shown. In accordance with the method, a series of constant frame clock signals is generated and a sheet is approximately feed into a frame along the sheet transport path in accordance with the frame clock signal, wherein the frame defines a virtual desired sheet position, which moves with a predetermined speed along the sheet transport path. The sheet is transported along the sheet transport path, an in-track position of the sheet in the sheet transport path is detected and it is determined whether the in-track sheet position matches the frame within predetermined limits. If the sheet matches the frame within predetermined limits, a start of frame signal is issued at a predetermined fixed time following the generation of the frame clock signal in accordance with which the sheet was fed into the frame, wherein the start of frame signal starts generation of a latent toner image in the print module for transfer to the sheet. If the sheet does not match the frame position within predetermined limits, the start of frame signal is issued at a specified time following the generation of the frame clock signal in accordance with which the sheet was fed into the frame, wherein the specified time corresponds to the predetermined fixed time to which a time shift is added, wherein the time shift is determined on the basis of the deviation of the actual sheet. Finally, the sheet is aligned in-track in accordance with the start of frame signal, and the thus aligned sheet is transported through the print module in alignment with the latent toner image to transfer the same to the sheet. | 04-19-2012 |
20120099874 | DETECTION DEVICE AND IMAGE FORMING APPARATUS - A detection device includes: a detection member that includes an emission member emitting a beam toward a transportation direction of a transportation path and a beam receiving member receiving a reflected beam of the beam emitted from the emission member, and that detects an image on a medium; a transmissive member that allows the beam emitted from the emission member and the beam reflected from the medium to be transmitted therethrough; and a support member that has an open portion blocked by the transmissive member, and that supports an upstream end portion of the transmissive member in the transportation direction of the medium at an upstream portion of the open portion toward the medium, an edge portion of a downstream portion of the open portion in the transportation direction being located closer to the emission member than a bottom surface of the transmissive member. | 04-26-2012 |
20120099875 | DISCHARGE DEVICE AND IMAGE-FORMING APPARATUS - A discharge device includes a transport unit that transports a medium in the form of a sheet having a first surface and a second surface on the opposite side of the first surface; a contact member that comes into contact with the second surface of the medium transported by the transport unit, and that moves in a first direction in which the contact member presses the medium to a side of the first surface, and in a second direction opposite to the first direction within a predetermined range; a guide member provided so that the guide member does not come into contact with the contact member, that guides the medium transported by the transport unit while contacting the first surface of the medium, after the contact member comes into contact with the medium; and a discharge unit that discharges the medium guided by the guide member. | 04-26-2012 |
20120099876 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a fixing device configured to fix the toner image to the sheet by heat; a discharge tray onto which the sheet to which the toner image has been fixed by the fixing device is discharged; a discharge device configured to convey the sheet so as to discharge the sheet onto the discharge tray; and a controller configured to temporarily stop the discharge device conveying the sheet while the sheet is being discharged by the discharge device and to resume the discharge device conveying the sheet after a predetermined stop time has elapsed, the controller controls the discharge device such that the conveyance torque of the discharge device at a time of resuming the discharge device conveying the sheet is larger than the conveyance torque of the discharge device before temporarily stopping the discharge device conveying the sheet. | 04-26-2012 |
20120141147 | IMAGE FORMING APPARATUS AND LENGTH MEASURING DEVICE - An image forming apparatus includes an image forming unit forming an image on a recording sheet; a transport unit transporting the recording sheet; a support surface supporting the recording sheet; a rotating member having an outer peripheral surface pressed against the support surface and rotationally following the recording sheet when the recording sheet passes through between the support surface and the outer peripheral surface; an ascertaining unit ascertaining a length of the recording sheet on the basis of an amount of rotation of the rotating member; and a restricting unit restricting a movement of the rotating member that moves toward the support surface after the recording sheet passes through between the support surface and the outer peripheral surface, the restricting unit preventing the outer peripheral surface, which comes into contact with the recording sheet, and the support surface from coming into contact with each other. | 06-07-2012 |
20120183308 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes: a registration roller which corrects a skew of the envelope and conveys the envelope to the transferring section; a sensor provided between a transferring section and the registration roller wherein in a case when an envelope is conveyed with a side of the main body thereof having the flap portion being parallel to the conveying direction and the flap portion being located where the end detected is by the sensor, a controller allows the sensor to detect a position of the end of the parallel portion of the flap portion when the registration roller and the sensor are located at the parallel portion of the flap portion, and the controller changes a latent image writing position by the writing section in an image scanning direction perpendicular to the conveyance direction of the envelope according to the detection result by the sensor | 07-19-2012 |
20120201548 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREFOR AND STORAGE MEDIUM - A situation is prevented in which a sheet on which an image has been formed with a first printing material is contained in a sheet-containing unit with the front and back of the sheet being inverted, and as a result, image formation using a second printing material is performed on a surface of the sheet different from the surface thereof on which the image has been formed. | 08-09-2012 |
20120201549 | IMAGE FORMING APPARATUS, OUTPUT CONTROL METHOD, AND PROGRAM - An image forming apparatus includes a specifying unit configured to, when a user operation for instructing checking of printing is performed during printing, specify, according to a type of carbonless copy paper of a page being printed, carbonless copy paper for checking corresponding to the carbonless copy paper being printed, and an output unit configured to output the carbonless copy paper being printed and the carbonless copy paper for checking specified by the specifying unit. | 08-09-2012 |
20120207485 | IMAGE FORMING APPARATUS - An image forming apparatus which secondarily transfers a toner image primarily transferred onto an intermediate transfer belt, including: a registration roller pair; a registration motor; a secondary transfer unit located downstream of the registration roller pair and secondarily transferring the toner image onto a sheet; a detection sensor detecting the presence or absence of the sheet transported on a sheet transport path downstream of the secondary transfer unit; a suction transport belt transporting the sheet; and a control unit controlling to stop the registration motor in a case that the control unit determines absence of the sheet on the sheet transport path based on a signal from the detection sensor, when an interval of time, which is expected to be taken from when starting to transport the sheet by the registration roller pair to when a leading edge of the sheet reaches the suction transport belt, has elapsed. | 08-16-2012 |
20120237226 | EDGE DETECTING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An edge detecting device for detecting an edge of a moving recording medium includes a reflecting unit that includes a reflecting surface having reflectance higher than that of the recording medium, light sources that irradiate the recording medium and the reflecting surface of the reflecting unit with light, a light receiving unit that includes pixels of a photoelectric conversion element provided in a width direction of the recording medium and receives reflected light that has been emitted from the light sources and has been reflected by the recording medium and the reflecting surface of the reflecting unit on the pixels of the photoelectric conversion element, and a control unit that determines a region of the pixels of the photoelectric conversion element that make output higher than a previously set determination threshold value to be the edge of the recording medium on the light receiving unit. | 09-20-2012 |
20120308244 | SHEET IDENTIFICATION DEVICE, IMAGE FORMING APPARATUS, AND COMPUTER READABLE MEDIUM - A sheet identification device includes plural detecting units, an estimating unit, and an output unit. The plural detecting units are provided along a transport path along which a sheet is transported by a transport unit, and detect passing of the sheet. The estimating unit estimates a length in a transport direction of the sheet as a detection target on the basis of individual detection results generated by the plural detecting units. The output unit outputs, if the length estimated by the estimating unit on the basis of at least one of the detection results is not a predetermined length, a signal indicating that a sheet having a length in the transport direction different from the predetermined length is being transported. | 12-06-2012 |
20130058663 | PRINTING SYSTEM, PRINTING SYSTEM CONTROL METHOD, AND STORAGE MEDIUM - A user is notified that the setting of sheets with respect to a grouped plurality of sheet storage units is changed, so that a state becomes impossible to execute switching of the grouped sheet storage units. The control method includes, registering a plurality of sheet storage units each storing a sheet as one group, determining, at the time of sheet supply to any one of the sheet storage units, whether sheet information about the sheet storage unit set in the group has been changed by sheet information newly set with respect to the sheet storage unit to be supplied with the sheet, and a notifying, when it is determined that the sheet information has been changed, the user of the change in the sheet information about the sheet storage units set as one group by the supply of the sheet. | 03-07-2013 |
20130108283 | IMAGE FORMING APPARATUS | 05-02-2013 |
20130129363 | IMAGE FORMING APPARATUS HAVING INTEGRATED SENSING UNIT - An image forming apparatus is provided. The apparatus includes an integrated sensing unit, which includes an optical sensor including a light emitting part and a light receiving part to receive light emitted from the light emitting part, and an actuator which selectively blocks light to be received by the light receiving part. The actuator includes a shaft member that is elastically supported in one rotation direction, a light blocking member that is mounted on the shaft member and is selectively positioned between the light emitting part and the light receiving part, and a first contact member and a second contact member distanced from each other on the shaft member. | 05-23-2013 |
20130142525 | IMAGE FORMING APPARATUS - An image forming apparatus includes a fixing section, a de-curling section, and a control section. The de-curling section has a de-curling nip portion that presses a sheet to correct a curl caused in the sheet, and a corrective force thereof to press the sheet changes at least in two steps. The control section increases the conveyance speed of the sheet after a rear end of the sheet has passed the fixing nip portion when the de-curling section supports by sandwiching the sheet with a weakly-pressing force. When the de-curling section supports by sandwiching the sheet with a strongly-pressing force, the controller increases the conveyance speed of the sheet after the rear end of the sheet has passed the fixing nip portion and the de-curling nip portion. | 06-06-2013 |
20130164000 | IMAGE FORMING SYSTEM - An image forming system includes an image forming unit configured to output image data onto a recording medium; a first conveying unit configured to convey the medium; a reading unit configured to read an image from the medium; a defect determining unit configured to determine whether the read image has a defect; a device connection determining unit configured to determine whether a discharge device is directly connected to an image inspection device at the downstream side or is connected to the image inspection device via another device at the downstream side; a second conveying unit configured to convey the medium to the discharge device on a longer conveying path, when the discharge device is directly connected to the image inspection device; a defective discharge tray to which the medium having a defective image is discharged; and a normal discharge tray to which the medium having a non-defective image is discharged. | 06-27-2013 |
20130243446 | IMAGE FORMING APPARATUS - An image forming apparatus forms, on a surface of a moving member moving in a first direction, an image under an image forming condition in accordance with image information. The image forming apparatus includes: a reflection-type optical sensor including an emission system including a plurality of light-emitting units arranged in a second direction perpendicular to the first direction and a light-receiving system including a plurality of light-receiving units that receive reflected light resulting from reflection of emission light emitted from the emission system at the surface of the moving member; and a determination device that determines whether there is an abnormality on the surface of the moving member on the basis of output signals from at least two or more light-receiving units. | 09-19-2013 |
20130330093 | IMAGE FORMING APPARATUS - An image forming apparatus including an feeding belt for electrostatically attracting and carrying a sheet having a toner image; an image heating member for heating the toner image while nipping and feeding the sheet; a separation roller for stretching tab sheet feeding belt and for separating the sheet from tab sheet feeding belt and directing the sheet toward to image heater; an electrical discharging member, provided at a position opposing tab separation roller through tab sheet feeding belt therebetween; and a controller for controlling tab discharging device to operate for discharging of the sheet after a leading end of the sheet is brought into abutment to the nip. | 12-12-2013 |
20140016950 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus including an image forming unit with a plurality of developing devices, a sheet transport unit, a sheet position measurement unit that measures a position of the sheet during the transport in a direction crossing a sheet passage, a displacement correction unit that moves the sheet during the transport in the sheet-passage crossing direction to correct a displacement of the sheet, and a control unit that carries out the displacement correction for the sheet by the displacement correction unit for the measured sheet depending on the measurement result by the sheet position measurement unit if the developing device located on a upstream side is used, and carries out position correction for an image and reduces an interval of the image formation for each sheet if the developing device located on the upstream side is not used. | 01-16-2014 |
20140029961 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit that forms an image on a recording medium; a width detector that detects positions of side edges of the recording medium in a width direction, which is orthogonal to a conveying direction in which the recording medium is conveyed, at multiple detection positions along the conveying direction; a shape calculator that calculates angles between the conveying direction and straight lines each connecting the positions of the same side edge detected at the multiple detection positions and calculates a shape of the recording medium based on the angles; and a correction unit that corrects image data of the image to be formed by the image forming unit based on the calculated shape of the recording medium. | 01-30-2014 |
20140037299 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - An image forming apparatus includes an image forming unit forming an image on a first recording medium based on image data, a measurement unit being positioned in an immediate vicinity of the image forming unit, being arranged upstream of a sheet-conveyance path than the image forming unit, and measuring a size of the first recording medium, an expansion ratio calculation unit calculating an expansion ratio of the first recording medium based on a first size of the first recording medium obtained before the first recording medium is passed through the image forming unit and a second size of the first recording medium obtained after the first recording medium is passed through the image forming unit, and a correction unit correcting the image data used for forming another image on a second recording medium conveyed after the first recording medium based on the expansion ratio. | 02-06-2014 |
20140037300 | BELT CONVEYANCE APPARATUS INCLUDING A BELT AND A DRIVING ROLLER DRIVING THE BELT, IMAGE FORMING APPARATUS INCLUDING A BELT AND A DRIVING ROLLER DRIVING THE BELT, AND IMAGE FORMING SYSTEM INCLUDING A BELT AND A DRIVING ROLLER DRIVING THE BELT - A belt conveyance apparatus including a driving roller to rotate and drive a belt, a first detector to detect surface speed of the belt, and a second detector to detect rotation speed of the driving roller. There is a first calculator to calculate a first deviation from target speed of the belt based on the surface speed and the target speed of the belt, and a memory to store a value corresponding to the first deviation. A second calculator calculates a second deviation from the target speed of the belt based on the target speed, the first deviation, and the rotation speed. There is also a controller to control the rotation speed of the driving roller based on the second deviation, and a switching unit to switch from the first deviation to the correction value when the first detector is abnormal. | 02-06-2014 |
20140050494 | IMAGE FORMING APPARATUS - In an image forming apparatus, a first deviation detection portion detects an amount of deviation of a sheet of paper in relation to a reference position of an edge of the sheet of paper. A control portion, determines whether or not an amount of deviation detected by the first deviation detection portion exists within a moving adjustment range of a pair of registration rollers in the second control and performs a first control to correct the reference position of the edge of the sheet of gaper before the image is formed when the amount of deviation exceeds, the moving adjustment range of the pair of registration rollers. A second deviation detection portion detects an amount of deviation of the sheet of paper just before the image is formed in relation to a reference position of the edge of the corrected sheet of paper. | 02-20-2014 |
20140086598 | IMAGE FORMING APPARATUS - An image forming apparatus contains a registration correction portion correcting an inclination of the sheet of paper by hitting a forward end of the sheet of paper against a pair of registration rollers, a detection portion that detects an amount of deviation in the sheet of paper, a control portion that calculates a command value of movement for correcting the amount of deviation and a moving portion that moves the registration rollers toward a direction which is perpendicular to a sheet-conveying direction based on the command value of movement with the sheet of paper being nipped with the registration rollers. The control portion controls the moving portion so that the movement of the registration rollers finishes before a limited time of movement or below an upper limit of movement set in relation to the command value of movement. | 03-27-2014 |
20140093256 | IMAGE FORMING APPARATUS - A light source is provided in the casing and emits a light beam for forming an image. A first sensor receives the light beam emitted by the light source and outputs a light reception signal. A cover opens and closes relative to the casing. A shutter prevents the first sensor from receiving the light beam when the cover is at an open position, and allows the first sensor to receive the light beam when the cover is at a closed position. A controller is configured to: execute a lighting process of lighting the light source; execute a first determining process of determining whether the light reception signal is outputted from the first sensor, in response to the lighting process; and determine that the cover is at the open position upon determination in the first determining process that no light reception signal is outputted. | 04-03-2014 |
20140186059 | SHEET CONVEYING APPARATUS - A sheet conveying apparatus includes a sheet conveyance path, a conveying unit configured to convey a sheet along the sheet conveyance path in a sheet conveying direction, a sensor configured to output a signal dependent on whether the sheet exists at a specific position on the sheet conveyance path, and a control device configured to, when it is determined that a particular condition is satisfied before it is determined that the sheet exists at the specific position, control the conveying unit to convey the sheet, which is being conveyed in the conveying path, until when it is determined that the sheet exists at the specific position, and control the conveying unit to stop conveying the sheet when it is determined that the sheet exists at the specific position. | 07-03-2014 |
20140212152 | IMAGE FORMING APPARATUS - An image forming apparatus includes a main body movably supporting an openable-and-closable portion, and the openable-and-closable portion is provided with a detection sensor. A first detection lever configured to be movable by being pushed by a sheet is provided on the main body, and a second detection lever configured to be capable of moving in conjunction with the movement of the first detection lever is provided on the openable-and-closable portion. The detection sensor is activated by the movement of the second detection lever based on the movement of the first detection lever. | 07-31-2014 |
20140348519 | PRINTING APPARATUS, METHOD FOR CONTROLLING PRINTING APPARATUS, AND STORAGE MEDIUM - In a printing apparatus, registration of a particular type of sheet in a particular sheet storage unit can prevent reduction in convenience. A printing apparatus configured to feed a sheet from any one of a plurality of sheet storage units includes a setting unit configured to set a sheet storage unit included in the plurality of sheet storage units as a particular sheet storage unit to be used when a sheet storage unit to be used for a job has not been specified, a specifying unit configured to specify a type of sheet to be stored in a sheet storage unit included in the plurality of sheet storage units, and a control unit configured to perform control so that the specifying unit does not specify a particular type in the sheet storage unit set by the setting unit. | 11-27-2014 |
20150071658 | SENSOR DRIVE AND IMAGE FORMING APPARATUS INCORPORATING SAME - A sensor device and an image forming apparatus incorporating the sensor device are provided. The sensor device includes a light source, a photo-detection system configured to receive light emitted from the light source and reflected at a sheet-like object, a housing accommodating the light source and the photo-detection system, the housing having a slit into which the object is inserted, and a holding member configured to hold the object such that relative positions of a surface of the object inserted into the slit and the photo-detection system are fixed. The image forming apparatus includes an image forming unit configured to form an image on a recording medium, the sensor device, and an adjustment unit configured to adjust a condition for image formation, based on an output from the sensor device. | 03-12-2015 |
20150104202 | Method for Measuring Media Stack Height Using a Translatable Height Sensor - A method of using a media height sensor assembly for measuring a media stack in an imaging forming device. The assembly includes a support and drive and insertion assemblies mounted thereon. Insertion assembly includes a translatable plunger having mounted thereon a sensor and a translatable probe. At a home position the sensor is actuated by a flag on the support placing sensor output in a first state. During a measurement cycle, drive assembly translates insertion assembly toward a media stack and the sensor output changes to a second state and a counter is started. The probe initially encounters the media stack and translates in a direction opposite that of the plunger. As the plunger reaches the media stack, the probe causes the sensor output to again change state stopping the counter. The insertion assembly is retracted to the home position where the flag causes the sensor output to change state. | 04-16-2015 |
20150132016 | IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND IMAGE FORMING METHOD - An image forming apparatus includes: a transfer part configured to transfer an unfixed toner image transferred from a photosensitive member onto a recording medium; a pair of pre-transfer rollers configured to convey a recording medium toward the transfer part; a fixing part configured to make the recording medium onto which the toner image is transferred pass between a pair of fixing rollers to fix the toner image onto the recording medium; a first detection sensor configured to detect a position of the recording medium between the transfer part and the pair of pre-transfer rollers; a second detection sensor configured to detect a position of the recording medium downstream of the pair of pre-transfer rollers; and a controller configured to calculate a deviation amount of the recording medium, rock the pair of pre-transfer rollers and adjust a position to which an image is written to form a toner image. | 05-14-2015 |
20150139670 | Method for Operating an Imaging Device with a Failed Media Bin Level Sensor - A method of operating an imaging device having a failed or failing media-full sensor determines whether or not a controller can trust the output signal received from the media-full sensor. A reduced power or intensity level is used to test the media-full sensor and, in particular, the light source to counter the dimming of the light source that occurs due to aging and electrical noise in the system. When the output signal of a photoreceptor is at or below a threshold value, the photo-receptor is considered to have not detected the light beam from the light source and the light beam is deemed not to have been detected even though the photo-receptor may be providing a lower level output signal. Thus, an output signal of the photo-receptor is not trusted and an indication that a media storage area is not full is provided and an imaging operation is carried out. | 05-21-2015 |
20150147072 | DETERMINING MEDIA SIZE BY MONITORING USAGE - Devices and methods to determine media size in a printing device. Media being added to a media sheet tray of a printing device is detected. A size of the media in the tray is estimated based only on at least one of: a size of the media in the tray prior to the media being added, a size of the media recently used prior to the media being added, and a size of the media most frequently used. A selection of previously used sizes of media is displayed on a user interface. The selection comprises: the size of the media in the tray prior to the media being added, the size of the media recently used prior to the media being added, and the size of the media most frequently used. Confirmation of the size of the media added to the tray is received, on the user interface. | 05-28-2015 |
20150338810 | IMAGE FORMING DEVICE, IMAGE FORMING SYSTEM, IMAGE-FORMATION COMMANDING DEVICE, AND IMAGE FORMING METHOD - An image forming apparatus includes a transport unit, an image forming unit, a detecting unit, a measuring unit, and a changing unit. The transport unit transports continuous paper. The image forming unit forms an image onto the continuous paper transported by the transport unit. The detecting unit transmits a detection signal every time the number of times a pulse signal, which is generated when the transport unit transports the continuous paper, is detected reaches a predetermined reference value. The measuring unit measures an amount of the continuous paper transported by the transport unit based on the detection signal from the detecting unit. The changing unit changes the reference value of the detecting unit in accordance with a transporting speed at which the continuous paper is transported by the transport unit. | 11-26-2015 |
20160026139 | PRINTER - A printer that reverses a direction of movement of a medium, includes a detection member that detects a slant in the medium relative to the direction of movement of the medium, based on at least two contact points between the detection member and the medium. | 01-28-2016 |
20160033912 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus for driving a cassette pickup roller ( | 02-04-2016 |
20160033918 | SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A sheet conveying device includes a sheet detecting sensor, a resist roller, a supporting member and a positioning member. The sheet detecting sensor is configured to detect a position of a sheet in a conveying path. The resist roller is configured to control a conveying timing of the sheet, based on a detection result by the sheet detecting sensor. The supporting member is configured to detachably support the sheet detecting sensor. The positioning member is configured to engage with the supporting member to position and fixedly attach the sheet detecting sensor, supported by the supporting member, at a normal position. | 02-04-2016 |
20160068358 | SHEET FEEDER AND IMAGE FORMING APPARATUS - A sheet feeder having; a base portion configured to support thereon a stack of sheets piled on top of another; a blower configured to blow air to the stack of sheets supported on the base portion so as to float one or more sheets in an uppermost portion of the stack of sheets; a suction/feed system located above the base portion, the suction/feed system configured to suck the sheet floated by the blower and to feed the sheet in a predetermined feeding direction; a photographic device configured to take a picture of the one or more sheets floated by the blower; and an illuminating device configured to emit light to the one or more sheets floated by the blower a plurality of times during one exposure process carried out by the photographic device. | 03-10-2016 |
20160125238 | METHOD AND APPARATUS FOR DETECTION OF A PRINT MARK - Apparatus for the detection of print marks ( | 05-05-2016 |
20160377540 | OPTICAL SENSOR AND IMAGE FORMING APPARATUS - In an optical sensor, a light emission system emits an irradiated light of a linear polarization in a first polarization direction toward a surface of a target object having a sheet shape from an incident direction which is inclined with respect to a normal direction of the surface. A first light detection system includes a first light detector arranged on a first light path of a specular reflected light, which is emitted from the light emission system and is specularly reflected from the target object. A second light detection system includes a second light detector arranged on a second light path of a diffuse reflected light which is diffusely reflected from an incident plane on the target object. The second light detector receives second light passed by an optical element which passes a linear polarization component of a second polarization direction perpendicular to the first polarization direction. | 12-29-2016 |
20160378041 | IMAGE FORMING SYSTEM - A series-connected tandem image forming system includes first and second image forming apparatuses capable of forming images on recording media by image forming units, the first and second image forming apparatuses being connected in series, the image forming system forming an image on a recording media by either one or both of the first and second image forming apparatuses, wherein the first image forming apparatus includes a first conveyance path for conveyance of the recording medium, and a second conveyance path for conveyance of the recording medium, the first and second conveyance paths being selectable therebetween, the second image forming apparatus includes a third conveyance path for conveyance of the recording medium, and a fourth conveyance path for conveyance of the recording medium, the third and fourth conveyance paths being selectable therebetween. | 12-29-2016 |
20170235267 | DEVICE FOR DETECTING TRAVEL DISTANCE, IMAGE FORMING APPARATUS, AND METHOD FOR DETECTING TRAVEL DISTANCE | 08-17-2017 |
20180024457 | IMAGE FORMING APPARATUS | 01-25-2018 |
20180024484 | IMAGE FORMING SYSTEM, METHOD FOR CONTROLLING IMAGE FORMING SYSTEM, AND PAPER CONVEYANCE PROCESSING APPARATUS | 01-25-2018 |
20220137543 | SELECTION OF TRAY BASED ON REMAINING LIFETIME OF TRAYS - An example image forming apparatus including a plurality of trays includes a plurality of sensors, a processor, and an image forming unit. The plurality of sensors measure at least one of noise or vibration occurring in the plurality of trays. The processor selects a tray to be used for an image forming operation, based on a remaining lifetime of each of the plurality of trays estimated based on data about at least one of the noise or the vibration measured by the plurality of sensors. The image forming unit performs an image forming operation on a print medium supplied from the selected tray. | 05-05-2022 |