Class / Patent application number | Description | Number of patent applications / Date published |
399040000 | Of overlapped toner images | 31 |
20080212986 | Image forming method, image forming apparatus and toner image pattern - An image forming method exposes image bearing members by simultaneously reflecting light beams corresponding to different colors by different reflection surfaces of a polygon mirror, transforms electrostatic latent images formed on the image bearing members into toner images for correction, transfers the toner images in an overlapping manner onto a transfer body, and calibrates overlapping positions of the toner images based on an optical detection of the toner images. The toner images are arranged at positions on the transfer body such that the toner images of different colors have no overlap therebetween, even if the toner images shift in a direction perpendicular to the transport direction due to a color registration error. Two first toner images simultaneously formed by two corresponding light beams reflected by one reflection surface of the polygon mirror are arranged adjacent to each other in a transport direction of the transfer body, and are sandwiched by two second toner images simultaneously formed by the two corresponding light beams reflected by the one reflection surface of the polygon mirror along the transport direction. | 09-04-2008 |
20090238585 | IMAGE FORMING APPARATUS - An image forming apparatus, forming a color image by successively superposing color images, formed on image carriers of corresponding image forming parts arranged along a rotational direction of an endless moving member, onto the endless moving member or a recording medium conveyed thereby, includes a first part causing a color registration pattern to be created on the endless moving member or the recording medium; a second part obtaining a color registration pattern signal by detecting the color registration pattern; a third part changing image formation timing in the image forming parts based on the color registration pattern signal; and a fourth part causing the endless moving member to rotate in forward and reverse directions after the creation of the color registration pattern. The second part obtains the color registration pattern signal by detecting the color registration pattern during each of the forward and reverse rotations of the endless moving member. | 09-24-2009 |
20090238586 | IMAGE FORMING APPARATUS - An image forming apparatus includes a control section which controls a forming section and a detection section to form an image patterns at a non-image area between image areas on an image carrier, to detect the image patterns as required, and to execute various types of compensation operations for correcting image forming conditions, and, when a timing of executing a first compensation operation coincides with a timing of executing a second compensation operation and the image pattern for the first compensation operation and the image pattern for the second compensation operation have a relationship such that the positions of forming the image patterns on the image carrier do not overlap each other, controls the image forming section to form both image patterns in the same non-image area. | 09-24-2009 |
20100098444 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD AND IMAGE PROCESSING APPARATUS - An image forming apparatus includes a laser array in which n light emitting sources are arrayed, an image-input converting unit configured to create, for each of channels of the laser array, a recording pattern for executing PWC from input image data and extract recording patterns of an nth channel and a first channel of the next scanning of the laser array, an overlapping control unit configured to calculate the width of laser pulses in the same position in a main scanning direction as overlapping width, a data correcting unit configured to reduce laser pulse width by a reduction amount corresponding to the calculated overlapping width and correct the laser pulse width, and a laser driver configured to control the intensity of laser beams in the respective channels of the laser array according to the recording patterns after the correction. | 04-22-2010 |
20100142980 | IMAGE FORMING APPARATUS FOR AND METHOD OF CORRECTING COLOR REGISTRATION ERROR - Disclosed is an image forming apparatus capable of, and a method of, correcting a color registration error. The image forming apparatus corrects a color registration error by adjusting a scan start time of, and/or the distance in a sub-scanning direction between, multiple light beams that are scanned by a light scanning unit onto several photosensitive media. | 06-10-2010 |
20100232817 | IMAGE FORMING APPARATUS AND METHOD OF CORRECTING IMAGE MISALIGNMENT - An image forming apparatus includes a transport member, image forming units (used as pattern forming unit), a pattern detector, and an image misalignment detector. The image forming units form correction-use patterns for each color on the transport member. The pattern detector directs a light beam onto the transport member having the correction-use patterns and detect reflected light reflecting from the transport member. The image misalignment detector detects image misalignment of the correction-use patterns. The pattern forming unit forms a reference color pattern and a first color pattern. The pattern detector uses an irradiation light having a first wavelength matched to a spectral sensitivity peak of the first color pattern to detect an intensity of reflected light reflected from the transport member. The image misalignment detector computes an image misalignment value between the reference and first color patterns based on the intensity of reflected light reflected from the transport member. | 09-16-2010 |
20100260509 | IMAGE FORMING APPARATUS - There is provided a photoreceptor cleanerless image forming apparatus capable of decreasing color mixture or an exposure error due to reverse transfer toner or untransferred toner. | 10-14-2010 |
20100329706 | IMAGE FORMING APPARATUS CAPABLE OF CALCULATING AMOUNT OF TONER ADHESION ACCURATELY - A forming-dot counting section counts a number of dots of a subject color based on dot pattern data of the subject color. An overlapping-dot counting section compares the dot pattern data of the subject color and the dot pattern data of at least one other color of which dots are formed prior to the subject color, and counts a number of overlapping dots of the subject color that are formed in an overlapping relation with the dots of the at least one other color. A calculating section calculates the amount of adhering toner of the subject color by subtracting an estimated amount of non-adhering toner from an estimated amount of adhering toner. The estimated amount of adhering toner is estimated based on the number of dots of the subject color. The estimated amount of non-adhering toner is estimated based on the number of overlapping dots. | 12-30-2010 |
20110103811 | IMAGE FORMING APPARATUS - An image forming apparatus includes a photosensitive member; an exposure device for exposing to light the photosensitive member to form an electrostatic latent image by using exposure image data for an output image to which an information image to be formed so as to be made difficult to be visually recognized with respect to background color has been added; developing portion for developing the electrostatic latent image with color toner into a color toner image; a transparent toner image forming portion for forming a transparent toner image located on the color image on a recording material; and an image processing portion for generating the exposure image data so that a toner amount of the information image on which the transparent toner image is superposed is less than that of the information image on which the transparent toner image is not superposed. | 05-05-2011 |
20110150508 | IMAGE INFORMATION DETECTING APPARATUS - An image information detecting apparatus comprises a light source comprising a light emitting surface, an image bearing member, a light receiving unit comprising a light receiving surface, an illumination optical system for causing the light emitting surface and the image bearing member to have a conjugate relationship and illuminating a pattern for detecting the overlap positional deviation with a beam; and a light receiving optical system for causing the image bearing member and the light receiving surface to have a conjugate relationship and guiding the beam for detecting the overlap positional deviation to the light receiving unit, wherein a straight line portion of a conjugate image of the light emitting surface on the image bearing member and a straight line portion of a conjugate image of the light receiving surface on the image bearing member are parallel with each other. | 06-23-2011 |
20120027439 | METHOD FOR FORMING A COMBINATION PRINT WITH CONTINUOUS IMAGING - Methods are provided for forming a combination print having an image thereon. In accordance with one aspect, a first receiver is provided having a first side with a toner in an overlap area and the first receiver is overlapped with a second receiver overlapping the first receiver; and the first receiver and second receiver are moved in the overlapped position past a print engine so that an image is formed on the combination of the first receiver and the second receiver with contiguous application of toner forming the image applied across the first receiver and the second receiver, the first receiver and second receiver are fused to bind the prints together and to fix the toner to form a combination print having a continuously applied image. | 02-02-2012 |
20120027440 | APPARATUS FOR MAKING COMBINATION PRINTS WITH PLEASING APPEARANCE - Printers are provided. In one aspect, a printer has a printer controller cooperating with a print engine, receiver transport system, overlap positioning system, and fuser to cause a first toner image to be formed on the first side of the first receiver with toner at least in an overlap area proximate to a first edge of the first receiver; to overlap the first edge of the first receiver with a second edge of the second receiver having a second thickness at a second end and to fuse the overlapped first receiver and second receiver to cause the toner in the overlap area to bond the first receiver to the second receiver. The first toner image includes an edge concealment toner pattern positioned confronting the second edge with the edge concealment toner pattern having toner that reduces the visual impact of image artifacts created by the overlapping second edge. | 02-02-2012 |
20120027441 | METHOD FOR FORMING DURABLE COMBINATION PRINTS - Methods forming a durable combination print and a printed article are provided. In one aspect, a first receiver is provided with a first thickness at a first edge and having a first toner image on a first side with toner at least in an overlap area proximate the first edge and toner forming a toner edge shield. The first edge and overlap area are overlapped with a second receiver having a second thickness at a second edge; and, the first receiver and the second receiver are fused to cause the toner in the overlap area to bond the first receiver to the second receiver. The first toner image includes a toner edge shield with a first end confronting the second edge that extends from the first side of the first receiver to at least about 50% of the second thickness and has a deflection surface sloped toward a second end. | 02-02-2012 |
20120045228 | COLOR IMAGE FORMING APPARATUS - The color image forming apparatus performs registration control and is operable in first and second image forming modes. Contact control in the first image forming mode is different from that in the second image forming mode. The control section causes an alignment correction amount to vary between registration control corresponding to image forming for a second or subsequent sheet in the first image forming mode and registration control corresponding to image forming for a second or subsequent sheet in the second image forming mode. An engine control section causes a color deviation correction amount for contact control of a process unit when shifting from image forming for a first sheet to image forming for a second sheet to vary between the first and second image forming modes. | 02-23-2012 |
20120207494 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image carrying belt for carrying a toner image; an image forming station for forming toner image on the image carrying belt; a sheet feeding belt for feeding a sheet; a transfer member for transferring the toner image from the carrying belt onto the sheet fed on the feeding belt; and a controller for controlling speeds of the carrying belt and the feeding belt. The controller is capable of controlling a relative speed between the carrying belt and the feeding belt at multiple levels. The image forming station forms a first toner pattern on the carrying belt in a state that the relative speed is at a first level, and forms a second toner pattern on the carrying belt in a state that the relative speed is at a second level which is different from the first level. The transfer member transfers the first toner pattern and the second toner pattern onto the sheet carried on the feeding belt. | 08-16-2012 |
20130016985 | COLOR IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOFAANM Son; Jung WooAACI SeoulAACO KRAAGP Son; Jung Woo Seoul KRAANM Kim; Suk GooAACI Namyangju-siAACO KRAAGP Kim; Suk Goo Namyangju-si KR - A color image forming apparatus and a control method thereof, in which a transfer start position of a transfer belt is determined based on electric signals that correspond to a width of a position indicator provided on a transfer belt and are detectable during one rotation of the transfer belt even when noise occurs in output, thereby reducing the overall printing time. | 01-17-2013 |
20130071133 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes image forming units forming toner images with first toners having different colors and a second toner having a different softening point from the first toners, an image transfer unit superposing the toner images one on top of another and transferring the superposed toner images onto a recording medium at least such that the toner image formed of the second toner is at the top of the superposed toner images, an image fixing unit fixing the transferred toner images, and an image controller that causes the image forming unit that uses the second toner to form the toner image over at least part of an image area and also causes the image transfer unit to perform the transfer such that the toner image formed of the second toner is at the top of the superposed toner images in the at least part of the image area. | 03-21-2013 |
20130164004 | IMAGE FORMING APPARATUS - An image forming apparatus including: color image forming means for effecting image formation with a color toner on the basis of color image data; transparent image forming means for effecting image formation, on the basis of transparent image data, with a transparent toner on a color toner image formed by the color toner forming means; fixing means for fixing a formed image, on a recording material, of the transparent toner superposed on the color toner; and control means for controlling the color image forming means, so that a toner amount per unit area of the color toner at a superposing portion of the transparent toner on the color toner image is less than that of the color image data at the superposing portion. | 06-27-2013 |
20130259496 | IMAGE FORMING APPARATUS - An image forming apparatus calculates a positional deviation in the main and sub-scanning directions for each color by forming registration patterns in two arrays along a sub-scanning direction on an image carrier. Each registration pattern in one array is paired with an identical registration pattern in the other array. A first sensor has: a light-emitting element irradiating one registration pattern in a pair; a photodetector for regular reflection light; and a photodetector for diffuse reflection light. A second sensor has: a light-emitting element irradiating the other one in the pair; and a photodetector for regular reflection light. The relative positions of a pair of registration patters calculated using the respective sensors are corrected so as to reduce the positional deviation between the calculated positions by the amount of offset deviation estimated occur between positions detected by the respective sensors when the registration patterns are without positional deviation. | 10-03-2013 |
20140016955 | COLOR IMAGE FORMING APPARATUS - The image forming apparatus includes process units that are closely arranged around respective photosensitive members and act on the photosensitive members, a light emission section that forms an electrostatic latent image for detection on the photosensitive member and a detection section that detects that the electrostatic latent image passes through a position facing the process unit, and a control section that performs misregistration correction control based on the detection result. | 01-16-2014 |
20140037307 | TONER PRINTING WITH INCREASED GAMUT - Methods are provided for determining toner colors to be combined to form a target color at a location on a receiver. In one aspect, a method includes determining a fluorescent toner color to be provided at the location based upon the density and hue angle of the target color; determining one or more reflective toner colors to be provided with the determined fluorescent toner color at the location to form the target color and the amount of the fluorescent toner color is decreased as the target color density increases. | 02-06-2014 |
20140119752 | PRODUCING RAISED PRINT USING LIGHT TONER - A method for producing a raised print on a receiver includes receiving image data and height data. The height data specify that raised printing should be produced in non-first-color region of the image data. Separation data are determined for a clear toner, a light toner having the first color, and at least two additional colored toners. The separation data for the clear toner is determined in response to the height data and the separation data for the light toner is determined in response to the image data and the height data so that the clear and light-toner separations specify that respective toners be deposited one atop the other in the non-first-color region. Respective toner images are deposited on the receiver, each corresponding to respective separation data. The deposited toner is fixed to the receiver member. | 05-01-2014 |
20140119753 | PRODUCING RAISED PRINT USING THREE TONERS - A method for producing a raised print using a three-component printer includes receiving image data and height data for an image to be printed, the height data specifying that raised printing should be produced in a non-yellow region of the image data. Separation data are determined for a yellow toner and two additional colored toners. The yellow separation data is determined based on the image data and the height data. The yellow separation and at least one of the colored separations specify that respective toners be deposited one atop the other in the non-yellow region. The two additional colored toners include respective amounts of black colorant. Using the printer with exactly three printing modules, respective toner images are deposited on the receiver, each corresponding to respective separation data. The deposited toner is fixed to the receiver. | 05-01-2014 |
20140178085 | IMAGE FORMING APPARATUS - The image forming apparatus includes photosensitive drums, drive motors for driving the photosensitive drums, a motor control unit for controlling operations of the drive motors, and a printer control unit. The printer control unit stops rotations of the photosensitive drums at reference positions after a print job is finished. After prescribed time elapses from the end of the print job, microscale driving of the photosensitive drums is performed for a microscale driving time period. Then, drive amounts by the drive motors during the microscale driving are calculated. At the start of a next print job, activation timing of each of the drive motors is adjusted in accordance with the drive amount so as to reduce a variation generated due to the microscale driving. | 06-26-2014 |
20140233970 | IMAGE FORMING APPARATUS - Latent image graduations formed on an intermediate transfer belt are read by a first sensor portion. Latent image graduations formed on a photoconductive drum are read by a second sensor portion. When an image is transferred from the photoconductive drum to the intermediate transfer belt on the basis of the information read by these sensor portions, the position of the image on the photoconductive drum is controlled to match the position of the image on the intermediate transfer belt. The first sensor portion and the second sensor portion are held integrally by the holding member. Accordingly, variations due to a temperature change of relative positions between the sensor portions or difference in vibrations of the respective sensor portions which may cause errors when aligning the images are reduced. | 08-21-2014 |
20140233971 | IMAGE FORMING APPARATUS - A control portion controls a drive of rotation of an image carrier and registers a second index with a first index passing through a transfer position at real time at the time of image formation. Before starting the image formation, the toner image forming portion is controlled to adjust misalignment between the first index and the second index. Accordingly, the second index is formed at a position on the image carrier which is registered with the first index in advance, so that a large amount of control for compensating a large amount of phase misalignment is no longer necessary. | 08-21-2014 |
20150093129 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first image forming unit that uses a first toner for a first toner image and a second image forming unit that uses a second toner for a second toner image, and transfers, a controller that controls the first image forming unit and the second image forming unit, having two control modes, a first print mode in which the first toner image and the second toner image are continuously transferred to the transfer medium; and a second print mode in which the first toner image is transferred thereafter, the transfer medium, on which the first toner image is formed, is passed through the second image forming unit without the second image forming unit performing image transfer. The controller performs control in such a manner that an amount of the first toner in the first print mode is greater than that in the second print mode. | 04-02-2015 |
20150110507 | IMAGE FORMING APPARATUS, PRINT DATA PRODUCING APPARATUS AND IMAGE FORMING SYSTEM - A first developer image is overprinted on a second developer image printed on a medium. A user inputs, through an inputting section, a magnification ratio or a reduction ratio of at least one of the first developer image and the second developer material image that should be printed. The magnification and the reduction ratios are applied vertically and horizontally substantially. A data parser performs parsing of print data. A magnification/reduction section produces the first image and the second image from the print data based on a result of the parsing. The first image is subjected to a variable magnification process. An image forming section transfers and fixes the first developer material image onto the medium after the variable magnification process, and then transfers and fixes the second developer material image on the medium so that the first and second developer material images are placed one over the other. | 04-23-2015 |
20150338759 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus according to the invention includes a plurality of image forming units and a changeover unit. The plurality of image forming units form multicolor images on an image carrier by overlapping, on a medium, developer images developed using developers. The changeover unit changes a layer overlapping sequence of the developer images on the medium. The developers include a developer emitting light according to radiation of non-visible light, and the changeover unit changes the layer overlapping sequence of the developer images using the developer emitting the light according to radiation of the non-visible light. | 11-26-2015 |
20160109821 | IMAGE FORMING APPARATUS THAT FORMS COLOR IMAGE BY SUPERIMPOSING PLURALITY OF IMAGES IN DIFFERENT COLORS - An image forming apparatus includes a generation unit configured to generate correlation data indicating a relationship between a relative position of a first image and a second image corresponding to a first speed and a relative position of the first image and the second image corresponding to a second image forming speed; a controller configured to, in a case where a image forming unit forms an image at the second speed, correct a relative position of the first image and the second image based on first information and on correlation data; and a prohibition unit configured to prohibit formation of the measurement image at the second speed in a case where a housing unit does not house a predetermined recording material corresponding to the second speed. | 04-21-2016 |
20160139528 | APPARATUS, CONTROLLER, AND METHOD OF FORMING MULTICOLOR TONER IMAGE - An image forming apparatus includes a transfer condition setting device to set a patch image transfer condition under which multiple patch images of respective component colors are transferred from an image bearer onto a recording medium conveyor. The transfer condition setting device sets a prescribed transfer condition that decreases a difference in transfer efficiency of toner between the respective component colors when the multiple patch images of respective component colors are transferred onto the recording medium conveyor below a difference in transfer efficiency of toner between the multiple component colors caused when transferred under the same transfer condition as a multicolor toner image is transferred onto a recording medium. A correcting device corrects an image forming condition to reduce an amount of misalignment caused in the multiple component colors of the multicolor toner image based on times of outputs from a patch image position sensor. | 05-19-2016 |