| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 399031000 | Image forming component | 52 |
| 20090052912 | ABNORMALITY DETERMINING APPARATUS, IMAGE FORMING APPARATUS, COPYING MACHINE, AND INFORMATION OBTAINING METHOD - A time point at which a predetermined period elapses since the start of use of a copying machine as a detection subject after factory shipment or repair is obtained. Pieces of set information, which are combinations of various types of information until the time point is reached are sequentially stored to construct a normal set information group. After the time point is reached, presence of abnormality in the copying machine is determined based on the normal set information group and the various types of information obtained. | 02-26-2009 |
| 20090142080 | Image Forming Device - An image forming device includes a rotational body configured such that an image to be transferred onto a sheet is formed in an image forming position thereon, a storage configured to store thereon, in a non-volatile manner, a correction parameter for canceling a deviation of the image forming position caused due to unevenness of a rotational speed of the rotational body, an adjusting unit configured to adjust the image forming position by controlling at least one of the rotational speed of the rotational body and timing of forming the image on the rotational body, based on the correction parameter, a first board loaded with the storage, and a second board loaded with the adjusting unit, the second board being provided separately from the first board. | 06-04-2009 |
| 20090220255 | MAINTENANCE UNIT AND MAINTENANCE METHOD OF IMAGE FORMING APPARATUS - It is possible to provide a technique capable of grasping the necessity of the maintenance for a plurality of maintenance-oriented components in managing a maintenance work in an image forming apparatus containing the plurality of maintenance-oriented components. | 09-03-2009 |
| 20090310986 | IMAGE FORMING APPARATUS, INTERMEDIATE TRANSFER BELT DRIVE CONTROL METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM - An image forming apparatus includes a primary transfer unit, a secondary transfer unit, a belt drive unit, and a swingable assembly. The primary transfer unit primary transfers an image from an image carrying member to an intermediate transfer belt. The secondary transfer unit secondary transfers the image, primary-transferred onto the intermediate transfer belt, from the intermediate transfer belt to a recording medium. The belt drive unit drives the intermediate transfer belt. The swingable assembly alternately abuts the secondary transfer unit to the intermediate transfer belt and separates the secondary transfer unit from the intermediate transfer belt. When the image forming apparatus is determined to be shifted to an extended stop mode, the belt drive unit moves the intermediate transfer belt for a given distance in a transport direction of the intermediate transfer belt and the swingable assembly separates the secondary transfer unit from the intermediate transfer belt. | 12-17-2009 |
| 20090317099 | IMAGE FORMING APPARATUS - An image forming apparatus according to the present invention includes a replaceable unit in which a plurality of replaceable parts are installed, a storage section to store a replacement time count value, a life duration time count value and a use count value, a display section and a control section to update the use count value in the storage section by counting the number of times of use of each of the parts installed in the unit, to determine whether a part which reached the life duration time exists or not based on the use count value of each of the parts which are update and the life duration time count value, and to display information for urging a replacement of the part which reached the life duration time and a part in which the use count value reached between the replacement time count value and the life duration time count value in the display section when the control section determines that the part which reached the life duration time exists. | 12-24-2009 |
| 20100021188 | IMAGE FORMING DEVICE, AND METHOD AND COMPUTER READABLE MEDIUM THEREFOR - An image forming device, configured to make image quality adjustment based on calibration data, includes a storage configured to store the calibration data for the image quality adjustment, an acquiring unit configured to acquire first image data, a converter configured to, when a predetermined condition is satisfied, convert the first image data acquired by the acquiring unit into second image data by placing, into the first image data, test pattern data for forming one or more test patterns, an image forming unit configured to form an image based on the second image data on an image-formed body thereof, a sensor configured to measure densities of the test patterns included in the image formed on the image-formed body, and a modifying unit configured to modify the calibration data stored on the storage based on the densities measured by the sensor. | 01-28-2010 |
| 20100074638 | Image Forming Apparatus - An image forming apparatus including an image carrier, a plurality of forming devices, a detecting device configured to perform a steady-deviation detection for detecting steady positional deviation and a varying-deviation detection for detecting varying positional deviation having a cycle, and a correcting device configured to perform a steady-deviation correction for correcting the steady positional deviation and a varying-deviation correction for correcting the varying positional deviation. The detecting device forms, during the steady-deviation detection, a steady-deviation detection pattern in a state where the varying deviation correction is selectively disabled. The steady-deviation detection pattern has a plurality of measuring points arranged in a longitudinal direction. The detecting device, during the steady-deviation detection, measures positional deviation amount at each measuring point, and detects the steady positional deviation based on the measurement result. | 03-25-2010 |
| 20100129093 | DEVICE AND METHOD FOR DETECTING LIFE OF ORGANIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS - A device for determining an end of life of an organic photoreceptor includes a potential detecting unit that detects a residual potential of the organic photoreceptor, a temperature detecting unit that detects temperature of the organic photoreceptor in either one of a direct manner and an indirect manner, and a life determining unit that determines the end of life of the organic photoreceptor based on the residual potential detected by the potential detecting unit and the temperature detected by the temperature detecting unit. | 05-27-2010 |
| 20100278547 | Image Forming Apparatus and Voltage Applying Device - An image forming apparatus includes a voltage applying unit for applying a voltage to an electric load; a sub control unit for controlling the voltage applying unit; a restarting unit for restarting the sub control unit in response to receipt of a restart signal; a determining unit for determining whether or not restart of the sub control unit is abnormal restart; and a main control unit. The main control unit generates a control start signal for allowing the voltage applying unit to start generation of the voltage, and the restart signal. When the determining unit determines that restart of the sub control unit is abnormal restart, the main control unit sends again the control start signal to the sub control unit. | 11-04-2010 |
| 20100296825 | DEVELOPMENT MONITORING METHOD AND SYSTEM - A method for monitoring development parameters of a liquid toner electrophotographic (LEP) printer, the method comprising defining an operational window for a current utilized by the printer and monitoring the current to determine a deviation of the current outside the operational window. | 11-25-2010 |
| 20110135329 | ELECTROSTATIC DISTURBANCE USED IN A TIMING ROUTINE FOR HVPS SWITCHING IN A PRESSURE TRANSFER SYSTEM INVOLVING BTB OR BTR - This disclosure is directed to systems and methods for calibrating, to a higher level of precision, the timing of operation of a bias transfer element in an image forming device. Specifically, the systems and methods are directed to calibrating the timing of forward and reverse biasing in a document processing apparatus to account for myriad mechanical and environmental disturbances. | 06-09-2011 |
| 20110150507 | SYSTEMS AND METHODS OF MANAGING ERRORS OF AN IMAGE FORMING APPARATUS - A method of managing errors of at least one image forming apparatus, the method involving collecting information regarding the errors disrupting normal operation of the at least one image forming apparatus, analyzing the severity of each of the errors based on the collected information, and outputting a severity analysis result for each of the errors. | 06-23-2011 |
| 20110182596 | Image forming apparatus - If an input of a continuous image forming job is received, a time for interrupting the continuous image forming job is decided based on an image area ratio of a toner image that is formed on a latent image carrier through the continuous image forming job and a predetermined number of formed images (the number of passed sheets) that is formed until a predetermined type of abnormal image is generated when continuous image formation is performed at the image area ratio. During an interruption period of the continuous image forming job, an idle rotation in which the latent image carrier rotates in a state in which the toner is not supplied to the latent image carrier by the developing unit is performed, and the cleaning process is performed. | 07-28-2011 |
| 20110200343 | IMAGE FORMING APPARATUS - An image forming apparatus includes a rotatable belt; an image forming station for forming an image on a belt or on a recording material carried on a belt in a region opposing the belt; a first detector, provided in one of upstream and downstream sides of the region with respect to a rotational direction of the belt, for detecting a position of the belt with respect to a widthwise direction; a second detector, provided in the other of upstream and downstream sides of the region with respect to a rotational direction of the belt, for detecting a moving direction in the region; a steering roller, disposed in the one side with respect to the rotational direction, for correcting a position of the belt with respect to the widthwise direction by inclining; a first controller for controlling an inclination of the steering roller on the basis of an output of the first detector; an adjusting roller, provided in the other of the sides with respect to the rotational direction, for adjusting the moving direction in the region; and a second controller for controlling an operation of the adjusting roller on the basis of an output of the second detector. | 08-18-2011 |
| 20110206392 | IMAGE FORMING APPARATUS - An image forming apparatus includes a rotatable belt member; an image forming station for forming an image on the belt member or a recording material carried on the belt member in a region opposing the belt member; first detecting means for detecting a position of the belt member with respect to a widthwise direction of the belt member; a first steering roller for correcting the position of the belt member with respect to the widthwise direction by inclination; first controller for controlling an inclination of first steering roller on the basis of an output of the first detecting means; second detecting means for detecting the position of the belt member; a second steering roller for correcting the position of the belt member with respect to the widthwise direction by inclination; calculating means for calculating such an amount of inclination of the second steering roller that a movement distance of the belt member is not more than a predetermined value in a state that an inclination of first steering roller is set to a predetermined value; and second controller for controlling the inclination of the second steering roller in accordance with an output of the second detecting means with the amount of inclination calculated by the calculating means being a median value. | 08-25-2011 |
| 20110206393 | IMAGE FORMING APPARATUS HAVING A FUNCTION OF PREDICTING DEVICE DETERIORATION BASED ON A PLURALITY OF TYPES OF OPERATION CONTROL INFORMATION - An image forming apparatus is provided. The image forming apparatus includes an acquiring unit that acquires a plurality of types of operation control information of the image forming apparatus that indicate deterioration of a toner in the image forming apparatus or deterioration of a component of the image forming apparatus. An index value calculating unit calculates an index value indicating a state of the image forming apparatus based on the acquired operation control information. An abnormality judging unit judges whether the image forming apparatus abnormality has occurred and predicts an occurrence of a failure that requires maintenance of the image forming apparatus due to deterioration of the toner in the image forming apparatus or deterioration of the component of the image forming apparatus based on the index value. | 08-25-2011 |
| 20110229159 | BELT DRIVE APPARATUS FOR CORRECTING BELT POSITION IN DIRECTION OF WIDTH - A belt drive apparatus is equipped with an endless belt rotationally movable by being supported by a plurality of rollers. A moving speed signal output part outputs a signal based on a rotational movement of the endless belt. A width direction position signal output part outputs a position signal for which its value changes in response to a position of the endless belt in a direction of width of the endless belt. A width direction position control part controls a position of the endless belt in the direction of width of the endless belt. A process execution part performs a predetermined process using the signal output from the moving speed output part based on the position signal output from the width direction position signal output part. | 09-22-2011 |
| 20110229160 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrier that carries a toner image, an image forming device that forms the toner image on the image carrier, a sensing device that senses a toner concentration of the image carrier and a control device that makes the image forming device form a test toner image on the image carrier, and determines necessity to execute each adjustment operation for adjusting a plurality of kinds of driving conditions for the image forming device at the time of forming the toner images, based upon a toner concentration of the test toner image. | 09-22-2011 |
| 20110274448 | IMAGE PROCESSING APPARATUS, CHARGING DEVICE, AND CHARGING ROLLER CONTROL METHOD - According to one embodiment, an image processing apparatus includes an image bearing member, a charging roller, a gap keeping member, a determining unit, and a driving unit. The gap keeping member comes into contact with an outer circumferential surface of the image bearing member and keeps a distance between the outer circumferential surface of the image bearing member and an electric resistance adjusting layer of the charging roller. The determining unit determines whether a contact section between the outer circumferential surface of the image bearing member and the gap keeping member is worn. The driving unit shifts, if the determining unit determines that the contact section is worn, a contact position between the outer circumferential surface of the image bearing member and the gap keeping member. | 11-10-2011 |
| 20110280595 | DETECTING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - Provided is a detecting apparatus including an illumination optical system for emitting an image bearing member with a light beam emitted from a light source unit, an imaging optical system including an imaging optical element for imaging an image on the surface of the image bearing member, a light receiving unit for detecting the image on the image bearing member which has been imaged by the imaging optical system, and a calculation unit for detecting image information on the image on the image bearing member from a detection signal received from the light receiving unit. In the detecting apparatus, at least one optical plane of the imaging optical element is configured to refract an imaging system principal ray after passing therethrough in a direction of farther becoming apart from the light source unit than the imaging system principal ray before passing through the optical plane. | 11-17-2011 |
| 20110311245 | IMAGE FORMING APPARATUS AND IMAGE DENSITY CORRECTION METHOD THEREFOR - An image forming apparatus includes: sensor detecting light intensity and output voltage based on the light intensity; data acquisition part setting reference voltages for the sensor to detect light intensity of bare surface of intermediate transfer member, acquiring, at set reference voltage, voltage output by the sensor on the bare surface as detection data; storage storing the detection data corresponding to the reference voltages; judgment part judging whether to perform image density correction processing; voltage calibration part adjusting output level at light intensity detection; density acquisition part forming toner pattern, and acquiring density data of the toner pattern by causing the sensor having adjusted output level to detect its light intensity; density data correction part reading one piece of detection data referring to output level, and correcting the density data based on the detection data; and image density correction part performing the processing based on the density data. | 12-22-2011 |
| 20120002986 | Method and System for Correcting the Linearity Error in Electrophotographic Devices - The invention describes a method and system for correcting linearity error of an electrophotographic device with a reduced number of lenses. The method and system insert additional time-slices in the data being processed by the electrophotographic device. The additional time-slices are inserted in the data in a predefined order based on a plurality of random numbers. The insertion of additional time-slices corrects the linearity error of the electrophotographic device. | 01-05-2012 |
| 20120027436 | Image Forming Apparatus - An image forming apparatus including: a plurality of photosensitive drums; a plurality of scorotron chargers provided for the plurality of photosensitive drums, respectively, a voltage application circuit commonly connected to the plurality of scorotron chargers, a plurality of wires provided for the plurality of scorotron chargers, respectively; a plurality of grid electrodes provided for the plurality of scorotron chargers, respectively; at least one of current detecting units provided for at least one of the plurality of grid electrodes, respectively, and at least one of the current detecting units detecting grid current which flows into at least one of the grid electrodes, respectively; and a control device configured to control the voltage application circuit such that at least one of the grid currents detected by at least one of the current detecting units become equal to or higher than a reference value. | 02-02-2012 |
| 20120027437 | Image Forming Apparatus - An image forming apparatus, includes: at lease one photosensitive element; a plurality of chargers configured to charge the at lease one photosensitive element; a voltage applying circuit commonly connected to the plurality of chargers and configured to apply a voltage to the plurality of chargers; a current detecting unit configured to detect a current sum of current that flows to the plurality of chargers from the voltage applying circuit; and a control device configured to control the voltage applying circuit so that the current sum detected by the current detecting unit becomes equal to or larger than a reference value. | 02-02-2012 |
| 20120082470 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a photoconductor; a charger configured to charge the photoconductor, the charger having a discharge wire and a grid; a charge-voltage applying device configured to generate charge voltage and apply the charge voltage to the discharge wire; and an abnormal-discharge detector provided between an output end portion of the charge-voltage applying device and the ground. The abnormal-discharge detector is configured to detect an abnormal discharge occurring in the charger by detecting an abnormal current passing via the grid and the ground upon occurrence of the abnormal discharge. | 04-05-2012 |
| 20120106992 | METHOD TO AUTOMATE A TRANSFER ASSIST BLADE DEVICE TIMING ADJUSTMENT - When calibrating a transfer assist blade (TAB) in a printer, toner patches are formed on a photoreceptor belt in the printer at locations between sheets of paper. The TAB is partially deployed between paper sheets to pick up toner, and then deployed normally or with a delay to mark the back sides of the sheets. A processor evaluates distances between TAB touchdown and liftoff points and leading and trailing edges of the sheets, and calibrates the TAB to optimize the TAB timing. Additionally, test prints can be generated, each having slightly varied TAB calibration settings that are stored in a non-volatile memory (NVM) table. A user enters an identification number for a test print with the best calibration settings. The processor looks up calibration settings corresponding to the entered identification number and moves NVM settings from the table into operational locations in the system NVM to calibrate the printer. | 05-03-2012 |
| 20120121276 | TESTING TRANSFER NIPS OF PRINTING DEVICES USING TRANSFER FIELD UNIFORMITY MAPS - A method and apparatus can, while operating a printing device in a test mode, supply a changed transfer field to a marking material transfer device. The changed transfer field is less than or more than the standard transfer field. The method and apparatus disable operations of other marking material transfer devices of the printing device to isolate the marking material transfer device. Further, the method and apparatus compare the actual amount and/or spatial distribution of marking material transferred to a recipient surface (to which the first marking material transfer device transfers the marking material) against a predetermined standard. Then, if the actual amount of marking material transferred to the recipient surface is different than the predetermined standard, the method and apparatus can identify the first marking material transfer device as being a potential source of printing defects. | 05-17-2012 |
| 20120148272 | METHOD AND APPARATUS FOR COMPENSATION OF BANDING FROM MULTIPLE SOURCES IN MARKING PLATFORM - A method for compensation of banding in a marking platform includes: initiating a calibration stage; marking a test pattern over multiple intervals of a lowest fundamental frequency among marking modules; obtaining image data for the test pattern from a sensor; obtaining 1x signals from sensors associated with the marking modules; and processing the image data in relation to the 1x signals to form banding profiles for multiple marking modules. Alternatively, the method may include: processing image data in relation to 1x signals to form banding profiles for multiple marking modules; determining amplitudes in multiple banding profiles exceeds a threshold to identify dominant banding profiles; and processing dominant banding profiles to form dominant banding signatures. Alternatively, the method may include: initiating a correction stage; obtaining 1x signals from sensors associated with dominant marking modules; and periodically processing dominant banding signatures and 1x signals to determine a banding compensation value. | 06-14-2012 |
| 20120155894 | Image forming apparatus and auto color registration method of the same - An image forming apparatus and an auto color registration method of the same which prints a color image by single pass, the image forming apparatus including: a plurality of developing units which each develops a color image in a predetermined color; a transfer unit which transfers the color image developed by developing units to the print medium and include a transfer belt rotatably installed on a transfer path; a first detector provided in a predetermined location of the transfer belt to face the transfer belt and detects any defect from a surface of the transfer belt; a second detector provided in a predetermined location of the transfer belt to face the transfer belt and detects a test pattern of an auto color registration (ACR) error transferred to the transfer belt; and a controller which adjusts the ACR error based on data detected by the first detector and the second detector. | 06-21-2012 |
| 20120195605 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - There is provided an image forming apparatus including a rotation member used for image forming and a detector for detecting light from the rotation member. First waveform data of an image-formed surface used to form an image on the rotation member is acquired by the detector. Second waveform data of the image-formed surface used to form an image on the rotation member is acquired. The second waveform data includes at least part of a detected section of the first waveform data. Information on the actual circumference of the rotation member is calculated based on matching between the acquired first and second waveform data. The acquired first waveform data and second waveform data are compared to determine whether or not to use the calculated information on the circumference. When it is determined not to use the calculated information on the circumference, information on the circumference of the rotation member is recalculated. | 08-02-2012 |
| 20120237228 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus having a rotatable image bearing member including an electroconductive substrate on which a photosensitive layer, a sub-surface layer, and a circulating surface layer are sequentially laminated, the image bearing member rotatably driven in a predetermined direction, a charger, an irradiator, a development device, a transfer device, a cleaner to clean the surface of the image bearing member after the toner image is transferred to the recording medium, and an applicator arranged downstream from the cleaner and upstream from the charger relative to the rotation driving direction of the image bearing member and in contact with the image bearing member, the applicator including a circulating material, an application brush, and an application blade to apply the circulating material to form the circulating surface layer. | 09-20-2012 |
| 20130094868 | VARIABLE HFSI COUNTER FOR THE CHARGING SUBSYSTEM BASED ON GOM (GRAINS OF MOISTURE) - As set forth herein, computer-implemented methods and systems facilitate adjusting an HFSI counter increment as a function of local relative humidity in order to adjust corona device lifespan. Adjustment factors are set for a plurality of GOM levels and an adjustment factor to be applied to the HFSI counter increment is assigned to or set for each GOM level. A curve is determined or calculated that approximates the adjustment factor, and a quadratic equation defining the curve is determined. Humidity measurement data is received from an environmental sensor coupled to the printer device, and depending on the relative humidity in the local environment of the printer, and an adjustment factor derived from the quadratic equation is applied to the HFSI counter increment to adjust for dry or humid conditions. | 04-18-2013 |
| 20130129365 | METHOD AND SYSTEM FOR TROUBLESHOOTING CHARGING AND PHOTORECEPTOR FAILURE MODES ASSOCIATED WITH A XEROGRAPHIC PROCESS - This disclosure provides methods and systems for troubleshooting charging and photoreceptor failure modes associated with a xerographic process. Specifically, according to an exemplary method the photoreceptor decay behavior, with and without the effects of depletion, are quantified and used to determine a performance state of one or more of the charging stations and the photoreceptor surface. | 05-23-2013 |
| 20130136466 | IMAGE FORMING APPARATUS - An image forming apparatus, including: an image bearing member; a transfer member to which a transfer voltage is applied to transfer the toner image on the image bearing member to a recording medium; a transfer voltage applying unit configured to apply the transfer voltage to the transfer member to make a value of a current flowing through the transfer member into a set current value; and a control unit configured to control the transfer voltage applying unit by changing stepwise the set current value according to a resistance of the transfer member, wherein the control unit sets a set current value smaller than a target current value when a target voltage value is larger than a preset threshold voltage value, the target current value being set according to the resistance of the transfer member, the target voltage value being applied to flow a current of the target current value. | 05-30-2013 |
| 20130195476 | IMAGE FORMING APPARATUS - An image forming apparatus comprises a plurality of photoconductors, a plurality of chargers including charging members, a voltage application unit to which charging members are connected in parallel and which is configured to apply a voltage to the charging members, a controller, and a messaging unit. The controller is configured to change, upon startup, the voltage to be applied by the voltage application unit to the charging members from a previously applied first voltage to a second voltage of which an absolute value is smaller than that of the first voltage, to obtain amounts of electric currents caused to flow through the respective charging members by application of the second voltage. A determination as to whether any anomaly is present is made based upon the obtained amounts of electric currents for the charging members. The messaging unit is configured to produce a notification about presence or absence of anomaly. | 08-01-2013 |
| 20130251384 | IMAGE FORMING APPARATUS AND TONER SENSOR STATUS SENSING METHOD THEREOF - An image forming apparatus which comprises a developing unit having a toner and a developer therein, the apparatus includes a toner sensor to receive a control voltage and to generate an output voltage corresponding to a remaining amount of the toner in the developing unit, a pulse width modulator to supply the control voltage to the toner sensor corresponding to a pulse width modulation (PWM) signal and a controller to control the pulse width modulator to supply the control voltage to the toner sensor to adjust a duty ratio of the PWM signal and make the output voltage reach a target value. | 09-26-2013 |
| 20130343771 | IDENTIFICATION OF A FIRST AND SECOND ADJUSTMENT VALUE BASED ON A FIRST AND SECOND ELECTRICAL DISCHARGE EVENT - A method includes moving a first end portion of a charging member with respect to a photoconductive member to obtain a first electrical discharge event corresponding to conduction of an electrical current from the charging member to the photoconductive member. The method also includes identifying a first adjustment value corresponding to a distance in which the first end portion moved toward the photoconductive member to obtain the first electrical discharge event. The method also includes moving a second end portion of the charging member with respect to the photoconductive member to obtain a second electrical discharge event corresponding to conduction of an electrical current from the charging member to the photoconductive member. The method also includes identifying a second adjustment value corresponding to a distance in which the second end portion moved toward the photoconductive member to obtain the second electrical discharge event. | 12-26-2013 |
| 20140064751 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus capable of accurately detecting deformation of a roller member. The image forming apparatus configured to form an image by forming an electrostatic latent image on a photosensitive drum ( | 03-06-2014 |
| 20140147134 | Monitoring a Condition of a Solid State Charge Device in Electrostatic Printing - An apparatus to monitor a condition of a solid state charge device (SSCD)) useful in electrostatic printing includes a power supply and a frequency detector. The power supply provides current to the SSCD, and includes a resonant controller. The frequency detector senses a frequency associated with the current, and since the frequency is representative of the condition of the SSCD, the frequency detector thereby monitors the condition of the SSCD. A method of monitoring the condition of the SSCD includes providing current to the SSCD using a power supply, and sensing a frequency associated with the current. The power supply includes a resonant controller, and the frequency is representative of the condition of the SSCD, and thus the method thereby monitors the condition of the SSCD. A corresponding computer-readable medium is also disclosed. | 05-29-2014 |
| 20150030341 | COLOR IMAGE FORMING APPARATUS - An image forming apparatus includes a photosensitive section driven to rotate, a light emission unit configured to emit light to form electrostatic latent images on the photosensitive section, a process section configured to form images on the photosensitive section, a detection unit configured to detect an output generated via the process section when an electrostatic latent image for correction passes through a position facing the process section, and a control unit configured to execute a correction of a position of an electrostatic latent image in image formation based on a detection result from the detection unit. | 01-29-2015 |
| 20150110506 | CHARGING MEMBER CONTAMINATION DETERMINING DEVICE - Provided is a charging member contamination determining device including plural units that includes a charging member, a member to be charged and a measuring section that measures a discharging current value between the charging member and the member to be charged, a calculating section that calculates a difference between current values measured by two units among the plural units, and a determining section that determines the presence or absence of contamination in the charging member based on the difference between the current values for each combination of two units calculated by the calculating section. | 04-23-2015 |
| 20150346683 | IMAGE FORMING APPARATUS - An image forming apparatus which forms an image on a recording material includes a transfer unit which transfers a toner image formed on an image bearing member to a recording medium, an applying unit which applies a predetermined current or voltage to the transfer unit, a detection unit which detects a voltage value with respect to the predetermined current applied by the applying unit or a current value with respect to the predetermined voltage applied by the applying unit, an environment detection sensor which detects an environment, and a determination unit which compares a detection result of the detection unit with a predetermined value according to a detection result of the environment detection sensor to determine whether or not predetermined discharge occurs in the transfer unit. | 12-03-2015 |
| 20160004180 | IMAGE FORMING APPARATUS FOR DETERMINING A DIFFERENCE IN LIGHTNESS BETWEEN COLORS IN TONER IMAGE FORMING UNITS - An image forming apparatus includes a transfer member, first transfer units, and second transfer units. Images of reference colors and other colors are transferred onto the transfer member being rotated. The first transfer units each transfer the image of a corresponding one of the reference colors. The second transfer units disposed upstream of the first transfer units in a rotational direction of the transfer member each transfer the image of a corresponding one of the other colors. The image of one of the reference colors is transferred by one of the first transfer units disposed most upstream. The other colors include at least one color of lightness lower than lightness of the one of the reference colors of the image transferred by the one of the transfer units. The highest-lightness image among the other colors is transferred by one of the second transfer units disposed most downstream. | 01-07-2016 |
| 399032000 | Of exposure system (e.g., lamp, scanning, erase) | 9 |
| 20080240747 | IMAGE SCANNING APPARATUS AND IMAGE SCANNING METHOD - An image scanning apparatus has an organic CMOS image sensor mounted in a base, and a photoreceptive surface of the image sensor is exposed on a top side of the base. A subject is placed directly on the photoreceptive surface, and the subject and the photoreceptive surface are covered up with a cover light-tightly. Thus the image sensor detects only chemiluminescent light from the subject. As for a fluorochrome-labeled subject, the subject placed directly on the photoreceptive surface is irradiated with excitation light from a light source mounted in the cover. The image sensor is provided with a filter for blocking the excitation light from its photoelectric conversion layers, so the image sensor detects only fluorescent rays generated from the excited fluorochrome-labeled subject. The image scanning apparatus needs no redundant space in perpendicular direction to the photoreceptive surface. | 10-02-2008 |
| 20090148172 | DRAWING DEVICE, EXPOSURE DEVICE, AND DRAWING METHOD - The present invention provides a drawing device. A drawing component includes a stage and a drawing head. The drawing head draws on a recording medium supported by the stage. A moving component relatively moves the stage and the drawing head. A position detection component detects a relative position of the stage and the drawing head. An error detection component detects an abnormal state in which an abnormal drawing is performed on the recording medium. When the abnormal state is detected, a controller stops drawing with the drawing head and returns the relative position from the stop position to the position of the drawing start side, so that drawing may be resumed from a position within a predetermined range including the stop position. | 06-11-2009 |
| 20090220256 | ELECTROSTATIC LATENT IMAGE MEASURING DEVICE - An electrostatic latent image measuring device includes a charged particle optical system which irradiates an electron beam and charges a photoconductor sample, an exposure optical system which forms an electrostatic latent image on a surface of the photoconductor sample, and a scanning unit which scans the surface of the photoconductor sample by the electron beam, a distribution of the electrostatic latent image on the surface of the sample being measured by a signal detected by the scanning. | 09-03-2009 |
| 20100046967 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device deflects a light beam emitted from a light source device by a vibrating mirror, scans a scanning surface with deflected light beam, and focuses the light beam onto the scanning surface by a scanning imaging optical system. The optical scanning device includes an offset detecting unit that detects an offset that is a deviation between a center of vibration amplitude of the vibrating mirror and a center of an optical scanning area and an adjusting unit that adjusts the center of the vibration amplitude when the offset detected by the offset detecting unit is larger than a predetermined value. | 02-25-2010 |
| 20100067927 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS INCLUDING SAME - An optical scanner includes a light source, a scan-deflecting portion including a resonance mirror to scan and deflect along a scan line, a plurality of light receiving sensors for synchronous detection provided on the scan line, a phase controller, an amplitude controller, and an offset controller. The phase controller obtains a difference between a true phase and a target phase, and generates a drive signal incorporating the difference between the true phase and the target phase. The amplitude controller incorporates the difference between a value equivalent of a true amplitude and a value equivalent of a target amplitude into the drive signal generated by the phase controller. The offset controller calculates an offset value by obtaining the difference between each of the time intervals, incorporates the difference between the offset value and a target offset value in the amplitude-controlled drive signal, and supply the drive signal to a driving device. | 03-18-2010 |
| 20100074639 | PRINTER, PRINTING METHOD AND PRINTER CALIBRATION METHOD - A method of calibrating an electrophotographic printer ( | 03-25-2010 |
| 20100080577 | Image Forming Apparatus - An image forming apparatus includes: a carrier; a forming device configured to form a mark on the carrier; a sensor including a light emitting device and a light receiving device, the light emitting device being configured to emit light toward the carrier, and the light receiving device being configured to receive light reflected from at least one of the carrier and the mark and output a light reception signal corresponding to a quantity of the received light; a determiner configured to determine a position of the mark on a basis of the light reception signal; a changer configured to change a sensor sensitivity of the sensor by changing at least one of a quantity of light emitted by the light emitting device and a sensitivity of the light receiving device; an evaluator configured to obtain the light reception signal a plurality of times and configured to evaluate a degree of closeness between an average level of the light reception signal obtained a plurality of times and a target level; and a controller configured to control the changer to change the sensor sensitivity of the sensor according to a result of the evaluation of the evaluator. | 04-01-2010 |
| 20120128379 | IMAGE FORMING APPARATUS THAT CORRECTS CLOCK PHASE DIFFERENCE - An image forming apparatus capable of forming a high-resolution image without complicating a circuit construction. A difference between a phase of an operation clock for a ED detection unit and a phase of an operation clock for an image processing unit is measured by a phase measurement unit of the image forming apparatus, and a timing of data delivery between the BD detection unit and the image processing unit is adjusted by a BD input timing adjuster based on a measurement result. A difference between the phase of the operation clock for the image processing unit and a phase of an operation clock for a laser drive unit is measured by the phase measurement unit, and a timing of data delivery between the image processing unit and the laser drive unit is adjusted by an image output timing adjuster based on a measurement result. | 05-24-2012 |
| 20120189328 | IMAGE FORMING APPARATUS - Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output. | 07-26-2012 |
