Entries |
Document | Title | Date |
20080253781 | COLOR IMAGE FORMING APPARATUS AND CONTROL METHOD THEREFOR - A color image forming apparatus which is capable of performing color misregistration correction, and registration of images and a recording sheet while reducing the toner consumption amount. An image forming section is caused to form a first reference image having a first density for adjusting a density of an adjusting image, and a second reference image having a second density different from the first density. A sensor detects the first reference image and the second reference image. The first density is determined as a density of the adjusting image, if an output signal level of the sensor at a time of detection of the first reference image is not lower than a predetermined value, and the output signal level of the sensor at a time of detection of the second reference image is lower than the predetermined value. | 10-16-2008 |
20080260397 | IMAGE FORMING APPARATUS AND IMAGE PROCESSING APPARATUS - An image forming apparatus forms an image for a latent image portion of which density is relatively higher with a dark color image forming portion, and forms an image for a background portion of which density is relatively decreased or of which image disappears, with a light color image forming portion, with respect to portions of forgery-preventing pattern image in which the density contrasts for the portions mutually differ after copying. | 10-23-2008 |
20080292335 | Color image forming apparatus and color image forming method - A color image forming apparatus includes a color-shift-detection-image forming unit, a color shift detector, a recording-material color-shift correcting unit and a conveyance-unit color-shift correcting unit. The color-shift-detection-image forming unit selectively forms a color-shift detection image on a recording medium or a first conveyance unit. The color shift detector detects color shift based on the color-shift detection image. The recording-material color-shift correcting unit performs color-shift correction based on the color-shift detection information corresponding to the color shift on the recording medium. The conveyance-unit color-shift correcting unit performs color-shift correction based on an amount of change in the color-shift detection information corresponding to the color shift on the first conveyance unit. The amount of change is determined using the color-shift detection information corresponding to the color shift on the first conveyance unit, which is obtained after the recording-medium color-shift correcting unit performs the color-shift correction, as a reference. | 11-27-2008 |
20080292336 | Image forming apparatus and image forming method - In an image forming apparatus of the present invention, a developing unit for magenta contains magenta-type toner for pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on a chromaticity diagram, in comparison with genuine-magenta toner for full-color image forming, and likewise, a developing unit for cyan contains cyan-type toner for the pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on the chromaticity diagram, in comparison with genuine-cyan toner for the full-color image forming. | 11-27-2008 |
20080298825 | Method for Converting Color Measured Values in Polarized or Unpolarized Form - A method for converting polarized color measured values to unpolarized color measured values or vice versa uses a computer. The conversion is carried out by the computer by using a pair of reference measured values determined in polarized and unpolarized form. | 12-04-2008 |
20080304840 | IMAGE FORMING APPARATUS - A misregistration correcting unit correcting image misregistration on an endless belt in an electrophotographic image forming apparatus is disclosed that includes an image creation part that creates on the endless belt misregistration correction pattern sets each including a pattern of mark groups each being one of a horizontal line mark group formed of horizontal line segment marks and an oblique line mark group formed of oblique line segment marks; a position detecting part that detects the mark positions; a position detection counting part that counts the number of the detected positions of each mark group and detects an abnormal mark group whose number of the detected positions is other than a prescribed number; a detection result storing part that stores information on the detected mark positions; and a misregistration calculating part that calculates the amount of misregistration based on the stored position information excluding that of the abnormal mark group. | 12-11-2008 |
20080310867 | METHOD AND APPARATUS FOR IMAGE FORMING CAPABLE OF EFFECTIVELY PERFORMING COLOR IMAGE POSITION ADJUSTMENT - A color image forming apparatus including a plurality of image forming devices attachable to and detachable from a housing, a transfer device including a transfer belt, an exchange detecting device configured to detect exchange of the image forming devices, a test pattern forming device configured to form, on the transfer belt, a test pattern including a plurality of marks formed by the image forming devices, when the exchange detecting device detects an exchange of the image forming device, an optical sensor configured to read the plurality of marks, and a checking device configured to determine whether reading by the optical sensor is performed correctly or not. | 12-18-2008 |
20090016748 | Method and system for estimating color ink usage for a print job element - Methods and systems for estimating the amount of color ink that will be used to print a print job element classify individual color drawing objects of the print job element in a pre-raster image process (pre-RIP) format into drawing object classes and apply predetermined rules associated with the drawing object classes to obtain color ink usage estimates for the individual color drawing objects. Combination of color ink usage estimates for the individual color drawing objects yields a prompt and meaningful estimate of color ink usage for the print job element. The estimate of color ink usage for the print job element can be put to advantageous use in a pay-for-print service. | 01-15-2009 |
20090016749 | IMAGE FORMING APPARATUS - In an image forming apparatus, the number of components and a size of the apparatus is reduced by realizing both functions for detecting a toner patch image to perform image quality adjustment and for performing precise color adjustment depending on a sheet color with one color sensor. The color sensor is disposed in a vicinity of a transport belt, a reference toner image is formed on the transport belt at a predetermined timing. A color of the reference toner image formed on the belt is detected by the color sensor to adjust development conditions. Further, the sheet is transported in a state where the transport belt is separated from a photoreceptor drum, and the sheet color is detected by the color sensor, and thereafter the transport belt touches the photoreceptor drum to transport the sheet to a transfer portion. | 01-15-2009 |
20090028589 | IMAGE FORMING APPARATUS - An image forming apparatus capable of minimizing color mis-registration due to runout of gears is disclosed. The image forming apparatus includes a plurality of photosensitive bodies having transfer points to transfer images onto a transfer object, a driving source to drive at least two photosensitive bodies of the plurality of photosensitive bodies, and a driving gear train to transmit driving power from the driving source to the at least two photosensitive bodies. The driving gear train includes photosensitive body shaft gears respectively connected to the photosensitive bodies driven by the driving source, and connecting gears to transmit the driving power to the photosensitive body shaft gears. When any one of the photosensitive body shaft gears is set to a reference photosensitive body shaft gear, the number of teeth of the connecting gear, which is disposed at a j | 01-29-2009 |
20090060538 | IMAGE FORMING APPARATUS - An image forming apparatus which forms an electrostatic latent image on a photosensitive drum, serving as an image carrier, develops the image using toners of a plurality of colors, and transfers a toner image onto a printing medium in accordance with an electrophotographic process. A toner consumption amount detection unit detects the toner consumption amount of each of the toners of the plurality of colors, a decision unit decides a color to be calibrated, based on the detected toner consumption amount of each color, a patch sensor detects the density of a patch of the decided color by generating the patch at a predetermined position on the photosensitive drum serving as an image carrier, and an adjustment unit adjusts the printing density of the color decided by the decision unit, based on the detected patch density. | 03-05-2009 |
20090067857 | IMAGE FORMING APPARATUS AND TONE CORRECTION METHOD - A tandem-type color image forming apparatus forms a toner pattern and toner markers on an intermediate transfer member. Tone levels in the toner pattern vary in a sub scanning direction, and the toner markers which are a same color with the tone pattern each oppose, in a main scanning direction, a different one of the tone level portions in the toner pattern, each tone level portion representing a different one of the tone levels. Positions of the toner markers in the sub scanning direction are determined to detect densities in the toner pattern corresponding to the determined positions. Tone of image data is corrected in an image formation based on a relationship between the densities and the tone levels corresponding to the determined positions. | 03-12-2009 |
20090067858 | COLOR IMAGE FORMATION APPARATUS - In a color misalignment detection method, an alignment pattern is obtained by designating a plurality of lines having line width and line intervals formed by superposing a line image of a black color as a reference color and a line image of a color other than the reference color, for example, a cyan line image, as one patch, and continuously forming these patches by shifting the relative position between the line images of the two colors by an optional quantity. An alignment pattern detection sensor has a light emitting diode and a photodiode. These elements are arranged along the scanning direction of the alignment pattern such that the photodiode can only receive diffused reflected light of reflected light from the alignment pattern. A spot shape of the light emitting diode and a spot shape of the photodiode are both formed in a square shape. | 03-12-2009 |
20090080914 | IMAGE PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sub CPU of an image forming section forms a toner image based on test line data on an intermediate transfer belt, detects an inclination of the formed toner image for each color component, calculates an adjustment indicative value for correcting the detected inclination for each color component, and outputs the adjustment indicative values to the BK adjusting section, C adjusting section, M adjusting section, and Y adjusting section, respectively, of an inclination adjusting section. The BK adjusting section, C adjusting section, M adjusting section, and Y adjusting section generate, based on the respective adjustment indicative values obtained from the sub CPU, adjustment amounts for an inclination adjustment process to be executed on image data, execute the inclination adjustment process based on the generated adjustment amounts, and output the obtained image data to the respective LDs of an exposure unit. | 03-26-2009 |
20090080915 | COLOR IMAGE FORMING APPARATUS AND COLOR MISREGISTRATION CORRECTION METHOD THEREFOR - A color image forming apparatus causes a light emitting unit to emit light to a superimposed pattern in which a black developer (Bk) is superimposed on a color developer (Y, M, C) as a background color, detects diffuse reflected light by a light receiving unit, calculates positional deviation among the colors using the black developer (Bk) as a reference color based on a detection result, and adjusts an image forming condition. | 03-26-2009 |
20090092405 | IMAGE FORMING SYSTEM AND IMAGE FORMING METHOD - An image forming system includes: an obtaining unit that obtains image information including a grey-level value of a pixel; a modifying unit that modifies the grey-level value of the pixel included in the image information obtained by the obtaining unit; a color image forming unit that forms on a recording medium a color image in accordance with information showing the color image including the grey-level value of the pixel modified by the modifying unit; and a transparent image forming unit that forms on the recording medium a transparent image overlapping the color image. | 04-09-2009 |
20090129795 | COLOR IMAGE FORMING METHOD AND COLOR IMAGE FORMING APPARATUS - Plural image forming sections transfer toner images of plural colors to a transfer target medium, so that a color image is formed on the transfer target medium. When a weight per particle of respective monochromatic toner particles calculated from a 50% volume average particle diameter of the respective monochromatic toner particles is m (kg), a charge amount per particle of the respective monochromatic toner particles calculated from a charge amount Q/M (C/kg) per weight measured by a suction type particle charge amount measuring device is q (C), and an average adhesive force between each of the monochromatic toner particles and each of the image carriers is F (N), F/q of the toner particle used in the image forming section in which order in transferring the monochromatic toner image to the transfer target medium is the first in the plural image forming sections is largest. | 05-21-2009 |
20090190940 | Deviation Amount Detecting Device, Deviation Amount Detecting Method, and Computer- Readable Recording Medium - A deviation amount detecting device for use in an electrophotographic color image forming device is configured to detect whether a deviation for each of toner images of different colors on a transporting member takes place, based on position information which is stored as a result of reading of a first set of deviation detecting patterns by a pattern reading unit. | 07-30-2009 |
20090196636 | Misregistration Amount Detector, Misregistration Amount Detecting Method, and Storage Medium - A misregistration amount detector in a tandem image forming apparatus having a conveying body configured to convey paper on which a color image is to be printed is disclosed. The misregistration amount detector includes an image creating part configured to create, on the conveying body, a first pattern for detecting the amount of misregistration of an image position related to a first color relative to an image position related to a second color other than the first color and a second pattern for measuring the conveyance speed of the conveying body, the first pattern and the second pattern being side by side in the conveyance direction of the conveying body, and a reading part configured to read the first pattern and the second pattern created on the conveying body by the image creating part. | 08-06-2009 |
20090214236 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - A tandem-type image forming apparatus includes a toner mark pattern forming unit configured to form a toner mark pattern; a sensor configured to detect the toner mark pattern; a first determining unit configured to determine presence or absence of color misregistration based on the detected result; and a color misregistration correcting unit configured to correct the color misregistration based on the determined result. The toner mark pattern includes paired toner marks disposed at different coordinates in the sub-scanning direction. One of the paired toner marks has their ends at different coordinates in the main scanning direction with respect to those of the other one. The first determining unit determines the presence or absence of the color misregistration in the main scanning direction based on the result of the detection of the paired toner marks. | 08-27-2009 |
20090263148 | CONTROL APPARATUS AND RECORDING MEDIUM - A control apparatus for controlling an image forming system is provided. The image forming system includes transparent toner image forming device configured to form a transparent toner image on a sheet on which a color toner image has been fixed and includes fixing device configured to fix the transparent toner image formed on the sheet. The control apparatus includes an obtaining means for obtaining information of a first part of a color toner image area on which transparent toner is to be applied with a first amount per unit area after the color toner image is fixed, and a control means for controlling the transparent toner image forming device to apply the transparent toner, with a second amount per unit area, on a second part of the color toner image area which is the color toner image area excluding the first part, after the color toner image is fixed. The second amount is smaller than the first amount. | 10-22-2009 |
20090269089 | COLOR IMAGE FORMING APPARATUS USING REGISTRATION MARKS - In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted. | 10-29-2009 |
20090310988 | METHOD FOR PREVENTING THE INFLUENCE OF THE TRANSFER OF VIBRATIONS DURING THE PRINTING OF IMAGES ON AN END IMAGE CARRIER - In a method for electrographic printing of color images on a final image carrier, charge images of the images to be printed are generated on a charge image carrier and are developed into toner images with toner, the toner images being transferred onto an intermediate carrier from which they are transfer-printed onto the final image carrier. The charge images for the individual colors of the color image are generated in succession on the charge image carrier and are developed into individual color toner images with color toner. The individual color toner images are transferred onto the transfer belt and are there collected atop of one another in a color collection cycle to form a complete color toner image. Before the transfer printing of the complete color toner image on the final image carrier, the final image carrier is pivoted onto the transfer belt, and after the transfer printing, the final image carrier is pivoted away from the transfer belt. After transfer printing of the complete color toner image, the color toner images for the next complete color image are transferred from the charge image carrier onto the transfer belt after an end of the pivoting of the final image carrier away from the transfer belt. | 12-17-2009 |
20090324264 | METHOD FOR CONTROLLING A PRINT JOB - A device and a method for improving the quality of prints using a printing device and system for carrying out a print job with a digital printing machine, preferably with a printing machine that works with a toner, in particular with an electrophotographically operating printing machine, whereby the sheets ( | 12-31-2009 |
20100028028 | Image forming apparatus - A tandem-type image forming apparatus in which a photoreceptor for black is controlled to be contacted to an intermediate transfer member and the photoreceptors for colors are controlled to be separated from the intermediate transfer member in a case of forming a black and white image, is disclosed, including a current control part which controls so that in the case of forming the black and white image, when the intermediate transfer member is driven, a value of a current flowing to the motor is equal to the value of the current in the case of forming the color image. The current control part controls the value of the current by controlling a rotational velocity of the photoreceptor for black. | 02-04-2010 |
20100028029 | IMAGE FORMING APPARATUS AND CONTROL METHOD - This invention has an object to process color balance adjustment at high speed in an image forming apparatus without depending on different feeding speeds for different printing materials. To accomplish this, an image forming apparatus of the invention detects color balances while a printing material on which toner patches are formed is fed on a second feeding path. Since images are formed on different types of printing materials at different feeding speeds, the image forming apparatus of the invention processes color balance adjustment at high speed without depending on the feeding speed at the time of image formation by switching the feeding speed on the feeding path. | 02-04-2010 |
20100054769 | METHOD AND APPARATUS FOR CONTROLLING COLOR IN MULTICOLOR MARKING PLATFORM - A multicolor marking platform may include a marking engine with a storage device storing color standard data, a non-black color separation station, marking process stations to selectively mark a color test pattern on a target substrate, and a color control logic with color control applications to selectively control color characteristics of the marking engine by controlling the non-black color separation station or a marking process station; and a spectral sensor to detect each color test pattern on the target substrate and provide corresponding color measurement data to the color control logic. The color control logic may selectively control the non-black color separation station or a marking process station in response to the color measurement data and the corresponding color standard data in relation to the selected color control application. Various embodiments of the multicolor marking platform and a method for controlling color in same are also provided. | 03-04-2010 |
20100067928 | IMAGE FORMING APPARATUS - A full-color image forming apparatus for forming a toner image for each color on each image carrier, and for transferring the toner image onto a sheet, including: an image forming section for forming a correcting toner image for each color on a portion of an image carrier, wherein the portion corresponds to an interval between the successive sheets; and a control section for conducting a correcting operation of the toner image for each color, based on the correcting toner image which is formed by the image forming section, wherein, when the image forming section is possible to conduct an operation, if the image forming section is controlled to interrupt the correcting operation to use the correcting toner image yet to be formed, the control section controls the image forming section to form the residual correcting toner image, before the control section controls the image forming section to stop the operation. | 03-18-2010 |
20100080582 | IMAGE FORMING APPARATUS - An image forming apparatus includes an alternative printing unit. The alternative printing unit performs alternative printing of a black image by mixing images of color materials of three colors of cyan, yellow, and magenta. The alternative printing unit includes a color material amount control unit that controls amounts of the respective color materials, which form the images of the color materials of the three colors, so as to be smaller than those at a time of normal printing. | 04-01-2010 |
20100080583 | IMAGE FORMING APPARATUS AND METHOD FOR CORRECTING COLOR REGISTRATION ERROR THEREOF - Disclosed are an image forming apparatus capable of correcting a color registration error and a method for correcting the color registration error. The image forming apparatus can include an image receptor, a light scanning unit having a plurality of light sources and one or more beam deflectors, a developing unit, a transfer unit, and a color registration error correction unit configured to generate data about a color registration error based on a change in a light output value of the plurality of light source and to correct the color registration error between visible images formed on the image receptor. | 04-01-2010 |
20100098443 | IMAGE FORMING APPARATUS AND METHOD - An image forming apparatus is provided, which forms an image by causing color material to adhere onto a print medium. The apparatus comprises a measurement component configured to measure an output density gradation characteristic of the apparatus, and a calculation component configured to calculate a color material consumption according to a dot pattern of a halftone image and the output density gradation characteristic. | 04-22-2010 |
20100172662 | HIGH ACCURACY MULTI-COLOR IMAGE FORMING APPARATUS AND METHOD FOR DETECTING POSITIONING COLOR IMAGE PATTERNS - In a multi-color image forming apparatus including a plurality of color image forming units adapted to form a plurality of different color images, a transfer belt to which positioning color image patterns are transferred by the color image forming units, and an optical sensor adapted to detect the positioning color image patterns, a positioning color image pattern trailing edge detecting circuit is provided to detect trailing edges of the positioning color image patterns by determining that an output signal of the optical sensor has reached a threshold value. The threshold value is a predetermined ratio of a peak value of the output signal of the optical sensor. A control circuit is provided to compensate for registration of the color image forming units in accordance with the detected trailing edges of the positioning color image patterns. | 07-08-2010 |
20100178069 | Image forming apparatus and color registration method thereof - Disclosed herein are an image forming apparatus and a color registration method thereof. The color registration method includes checking a change in a status of an image forming apparatus, selecting color registration patterns having a different length according to the status change, and performing color registration by printing the color registration patterns having the different length onto a transfer belt. | 07-15-2010 |
20100196023 | CONTROL APPARATUS, PROGRAM, RECORDING MEDIUM, AND IMAGE FORMING SYSTEM - A control apparatus configured to control an image forming system, in forming a transparent image so as to cover color images fixed on a sheet, applies a transparent toner on an area on which an image can be formed and which is other than an area that a user desires to increase the glossiness thereof. | 08-05-2010 |
20100196024 | CONTROL APPARATUS, PROGRAM, RECORDING MEDIUM, AND IMAGE FORMING SYSTEM - A control apparatus configured to control an image forming system, in forming a transparent toner on a sheet having color toners formed and fixed thereon, applies a transparent toner on an area on which an image can be formed and which is other than an area that a user desires to reduce the glossiness thereof. | 08-05-2010 |
20100202789 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus is provided and includes: an image forming unit that forms an image on an image carrier with a transparent material and a coloring material; a controller that controls an order of an image forming with the transparent material and an image forming with the coloring material to be different between in an image portion and in a non-image portion in an image forming region on the image carrier; and a transferring unit that transfers the image formed on the image carrier onto a recording medium | 08-12-2010 |
20100226665 | IMAGE FORMING APPARATUS AND METHOD FOR PRINT CONTROL - Provided are an image forming apparatus and a method for print control which can carry out printing using appropriate toners without selecting an apparatus to be used from apparatuses loaded with different toner groups depending on a print object. In an image forming apparatus provided with an image forming section including photoreceptor drums, writing units to form electrostatic latent images on the photoreceptor drums, and development devices to carry out development by feeding toners to the latent image, there are loaded, as the toners, a first toner group (for example, normal toners) containing three colors of CMY; a second toner group (for example, Vivid toners) containing three colors of CMY with a wider color reproduction area than the first toner group; and a K (black) toner. | 09-09-2010 |
20100239275 | IMAGE FORMING APPARATUS AND PRINTING CONTROL METHOD - An image forming apparatus having a printing section loaded with a first toner group, and a second toner group having a higher chroma value than the first toner group; and a control section which is configured to: convert color information of each part of an image based on image data specified by a print job into values in a prescribed color space; make a first judgment of a toner group proper to the image by comparing the values in the prescribed color space with color reproducible range of previously registered each toner group; make a second judgment of the toner group proper to a recording sheet and/or a printing condition which being specified by the print job, by referring to previously stored correlation information; and determine the toner group to be used for printing the image, based on results of the first and second judgments. | 09-23-2010 |
20100266300 | IMAGE FORMING APPARATUS - An image forming apparatus including multiple colored toner image forming units to form multiple colored toner images on a rotatable body, a transfer device to collectively transfer the multiple colored toner images onto a recording medium from the rotatable body, a fixing device to fix the multiple colored toner images onto the recording medium, and a light-colored toner image forming unit to form a light-colored toner image as a bottommost layer of a resultant full-color toner image formed on the rotatable body. The multiple colored toner images are sequentially superimposed on the light-colored toner image formed as the bottommost layer of the resultant full-color toner image formed on the rotatable body. A condition for forming the light-colored toner image by the light-colored toner image forming unit is set such that the light-colored toner image is not transferred onto the recording medium from the rotatable body by the transfer device. | 10-21-2010 |
20100290798 | IMAGE FORMING APPARATUS, AND IMAGE ADJUSTING METHOD INVOLVING FLUCTUATION-INFORMATION ACQURING UNIT AND CONTROL UNIT THAT FORMS GRADATION PATTERN - A technique that can stably realize highly accurate image adjustment processing regardless of deterioration in an image forming characteristic and the like is provided. An image forming apparatus that forms, on an image formation medium, a gradation pattern formed as an image of density changing according to a gradation step, and performs predetermined image adjustment processing on the basis of a print state of the gradation pattern formed on the image formation medium, the image forming apparatus comprising a fluctuation-information acquiring unit configured to acquire information on a degree of fluctuation in a predetermined characteristic affecting an image quality of an output image; and a control unit configured to form, on the image formation medium, a gradation pattern in which a density changing amount is changed according to the gradation step on the basis of the information acquired by the fluctuation-information acquiring unit. | 11-18-2010 |
20100322646 | INFORMATION PROCESSING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE PROCESSING METHOD - An information processing apparatus includes a plurality of output circuits that output a plurality of pieces of information to an external device. Each of the output circuits includes a synchronization control unit that synchronizes an operation clock of the output circuit with an operation clock of a separate output circuit; an information receiving unit that receives a piece of information that is different from a piece of information that is received by the separate output circuit; and an output control unit that outputs the received piece of information to the external device in accordance with the synchronized operation clock. | 12-23-2010 |
20110020019 | METHOD FOR SELECTING COLOR TABLES - A method for color printing includes the steps of determining a voltage level of electrical power supplied to an electrophotographic printing device having multiple colors of toner, the voltage level defining a fusing capacity, and selecting a color table, stored in memory, defining a maximum toner application level for each color of toner, based upon the fusing capacity. | 01-27-2011 |
20110026951 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND IMAGE FORMING PROGRAM PRODUCT - An image forming apparatus, includes a transferring belt where a color image is formed; a conveyance belt transferring a recording medium where a monochrome image is transferred; a velocity difference detecting part detecting a velocity difference between the transferring belt and the conveyance belt; a determining part determining whether the velocity difference detected by the velocity difference detecting part is equal to or greater than a designated value; a velocity adjusting part adjusting the velocity difference so that the velocity difference becomes lower than the designated value in a case where the velocity difference is determined to be the designated value or more by the determining part; and a color correcting part correcting a shift of colors between the color image and the monochrome image by using the transferring belt and the conveyance belt whose velocities are adjusted by the velocity adjusting part. | 02-03-2011 |
20110058827 | Image forming device - A main controlling part is configured to choose and execute either a constant belt speed control which controls a driving motor (a driving source for an intermediate transfer belt) to move the intermediate transfer belt at a predetermined target belt speed or a constant motor speed control which rotates the driving motor at a predetermined target rotational speed according to a print command, and then, prior to a first-time print job, after executing a writing position correcting process while moving the intermediate transfer belt under the constant belt speed control, forms a color shift detecting image by switching from the constant belt speed control to the constant motor speed control, measures a difference between amounts of color shift, and executes a speed correcting process for correcting the target rotational speed of the driving motor in the constant motor speed control based on the measurement result. | 03-10-2011 |
20110076039 | IMAGE-PROCESSING DEVICE, IMAGE-FORMING APPARATUS, IMAGE-PROCESSING METHOD, AND COMPUTER-READABLE MEDIUM - An image-processing device includes a selection unit that selects either a first operation mode or a second operation mode for representing a primary color by a combination of a first developer having a relatively light color of substantially the same hue as the primary color and a second developer having a relatively dark color of substantially the same hue as the primary color, wherein in the second operation mode, a larger amount of the first developer and a smaller amount of the second developer are used to represent a given intensity of the primary color than in the first operation mode; and a first conversion unit that converts a primary color signal representing the primary color into a first developer color signal representing an amount of the first developer and a second developer color signal representing an amount of the second developer. | 03-31-2011 |
20110158663 | PRINTING APPARATUS, PRINTING METHOD, PRINTING SYSTEM, AND PROGRAM FOR IMPLEMENTING THE PRINTING METHOD - A printing apparatus includes a generation unit configured to generate first print data and second print data based on input print data, a printing unit configured to print the first print data generated by the generation unit on a sheet, an acquisition unit configured, in order to print the second print data on the sheet having the first print data printed thereon by the printing unit while reducing misregistration, to acquire a correction parameter used for correcting a position of printing the second print data, a transmission unit configured to transmit the second print data generated by the generation unit and the correction parameter acquired by the acquisition unit to a second printing apparatus, and a conveyance unit configured to convey the sheet having the first print data printed by the printing unit to a paper feed unit of the second printing apparatus. | 06-30-2011 |
20110182598 | IMAGE FORMING APPARATUS AND METHOD FOR PERFORMING IMAGE FORMING USING AN ELECTROPHOTOGRAPHIC PROCESS - An image forming apparatus using an electrophotographic process includes an image forming unit, a storage unit, and a control unit. The image forming unit performs monochrome printing and color printing. The storage unit stores print ratio data that relates to printing in the image forming unit is measured over time. The control unit separately performs correction of monochrome toner density and color toner density based on a predetermined first condition. If the first condition in the monochrome printing is met, the control unit performs correction of the monochrome toner density if a predetermined second condition concerning an amount of variation in the print ratio identified from the print ratio data is also met. | 07-28-2011 |
20110182599 | IMAGE FORMING APPARATUS, ALIGNMENT CORRECTING METHOD, AND ALIGNMENT CORRECTING PROGRAM - According to one embodiment, an image forming apparatus includes: a light emitting section; plural photoconductive members on which electrostatic latent images are respectively formed by emitted lights of the light emitting section; a developing section configured to develop, with toners of colors different from one another, the electrostatic latent images formed on the photoconductive members; a transfer section onto which images developed by the developing section are transferred; and a light-emission control section configured to control the light emitting section to thereby selectively form, on the transfer section, first test images respectively formed for the toners of the respective colors and printed at a first interval in a sub-scanning direction and second test images respectively formed for the toners of the respective colors and printed at a second interval smaller than the first interval in the sub-scanning direction. | 07-28-2011 |
20110182600 | IIMAGE FORMING APPARATUS, ALIGNMENT PATTERN FORMING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM HAVING TONER IMAGE ALIGNMENT PROGRAM RECORDED THEREIN - Generally, according to an embodiment, an image forming apparatus includes an image forming unit, a belt, a sensor whose detection area for a toner image is set on a belt surface, and an image control unit. The image control unit controls the image forming unit to form a toner image to be transferred to the sheet in a range different from the detection area in a direction of belt width, and to form alignment patterns at a position which is within a range where the toner image is formed in the direction of belt surface movement and which overlaps the detection area in the direction of belt width. | 07-28-2011 |
20110188870 | IMAGE FORMING APPARATUS - An image control apparatus according to an embodiment includes: a traveling member which carries a toner image; a detection unit which detects an adjustment pattern formed on the traveling member; and a control unit which generates an edge detection signal obtained by binarizing a detection result from the detection unit, and generates converted data obtained by analog-digital converting the detection result from the detection unit. | 08-04-2011 |
20110236043 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first image forming unit for forming a color developer image using color developer; a second image forming unit for forming a transparent developer image using transparent developer; a transfer unit for transferring the transparent developer image and the color developer image to a medium; a fixing unit for fixing the transparent developer image and the color developer image; and a control unit for controlling the first image forming unit and the second image forming unit according to a gloss printing operation when the gloss printing operation is selected. | 09-29-2011 |
20120008966 | IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An image of a color misregistration detection pattern is formed, and the amount of color misregistration is detected by reading of the pattern image. The amount of color misregistration detected by a detecting unit and the delay time from the time when image data is requested to the time when the image data is output are stored. The color misregistration is corrected based on the stored delay time and amount of color misregistration. | 01-12-2012 |
20120045227 | IMAGE FORMING APPARATUS AND IMAGE PROCESSING DEVICE - An image forming apparatus includes: an image information input section into which image information is input, and image holding members by which toner images of two or more colors including black and clear colors are held, respectively. The image forming apparatus further includes a transfer-receiving material to which toner of all colors are transferred from their respective image holding members, an image-area pinpointing section wherein an area of clear toner image to be superposed on a linear image region to be formed with toner of the black color is pinpointed in the image information input into the image information input section, and an image processing section wherein is performed replacement processing that at least part of black image on the pinpointed image area is formed with a hybrid of two or more kinds of colored toner instead of black toner. | 02-23-2012 |
20120163840 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND IMAGE FORMING PROGRAM - An image forming apparatus that applies clear toner to an image to be formed based on image data being input and image information regarding the image data when forming the image, the image forming apparatus including a subject detection unit that detects a subject included in the image data based on the image information, the subject including plural pixels; and a setting unit that sets a first maximum value for amounts of the clear toner, each amount being an amount of the clear toner to be applied to a corresponding pixel included in the subject, based on a detection result of the subject. | 06-28-2012 |
20120170950 | IMAGE FORMING APPARATUS, IMAGE FORMING CONTROL METHOD, AND RECORDING MEDIUM STORING IMAGE FORMING CONTROL PROGRAM - An image forming apparatus is provided with a measuring device, which measures multi-colors in a multi-color toner image formed on a recording sheet that is output from the image forming apparatus. Based on the measured multi-colors, the image forming apparatus estimates an output value of each one of primary color toner images that constitute the multi-color toner image, and corrects an image forming condition of each one of the primary color toner images based on comparison between the estimated output value of the primary color toner image and a target value of the primary color toner image. | 07-05-2012 |
20120243890 | METHOD OF EVALUATING ELECTROPHOTOGRAPHIC OVERCOATABILITY OF COMPOSITION, ELECTROPHOTOGRAPHIC OVERCOAT COMPOSITION, ELECTROPHOTOGRAPHIC METHOD, AND ELECTROPHOTOGRAPHIC APPARATUS - A method of evaluating electrophotographic overcoatability of a composition is provided. The method includes measuring a color (C | 09-27-2012 |
20120263482 | CONTROL APPARATUS, PROGRAM, RECORDING MEDIUM, AND IMAGE FORMING SYSTEM - A control apparatus configured to control an image forming system, in forming a transparent image so as to cover color images fixed on a sheet, applies a transparent toner on an area on which an image can be formed and which is other than an area that a user desires to increase the glossiness thereof. | 10-18-2012 |
20120269525 | PRINTING CONTROL APPARATUS AND PRINTING CONTROL METHOD - A printing control apparatus determines whether a limit to prohibit printing using a spot color printing material is imposed on, out of a plurality of objects included in document data, an object set to be printed using the spot color printing material. Upon determining that the limit to prohibit the printing using the spot color printing material is imposed on the object set to be printed using the spot color printing material, control is performed to prohibit issuance of a rendering command to print the object using the spot color printing material. | 10-25-2012 |
20120275803 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus forms a stamp image with a stamp image developer having a color developing temperature at a color erasing temperature of an image forming developer, and forms a mask image with a mask image developer having a color re-developing temperature at a temperature not lower than a color re-developing temperature of the image forming developer. Accordingly, when a confidential document is color-erased, the stamp image develops color, and when the color-erased confidential document again develops color, it can not be read. | 11-01-2012 |
20120275804 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first toner image bearing member (drum); a second drum; an intermediary transfer member (belt); a secondary transfer member; a toner charging member; and a controller for controlling an operation in a single-color image forming mode and an operation in a multi-color image forming mode. The controller effects, in a post-processing operation after the operation in the single-color image forming mode in which the toner image is formed on the first drum is ended, control such that a separation state between the drum and belt is switched to a contact state between the drum and belt and then the toner deposited on the toner charging member is collected onto the second drum via the belt and then is collected by a cleaning device provided for the second drum. | 11-01-2012 |
20120288289 | COLOR MISALIGNMENT CORRECTION PATTERN DETECTION METHOD IN IMAGE FORMING APPARATUS - A pattern detection sensor includes a light emitting element for specular reflection, light emitting element for diffuse reflection light, and light receiving element. When turning on the light emitting element for specular reflection to emit light, a light source switching unit keeps off the light emitting element for diffuse reflection light. When turning on the light emitting element for diffuse reflection light to emit light, the light source switching unit keeps off the light emitting element for specular reflection. An offset detection unit detects a difference between a detection timing by specular reflection light and another detection timing by diffuse reflection light as an offset value (mutual detection error). | 11-15-2012 |
20120294635 | IMAGE STABILIZATION CONTROL SYSTEM AND IMAGE FORMING APPARATUS DIRECTED TO ELECTROPHOTOGRAPHIC PROCESS - An image stabilization control system directed to an electrophotographic process is provided. The image stabilization control system includes a color measuring unit for measuring the color of a toner image after being fixed on a medium. The color measuring unit has an SCE color measuring function of measuring a component excluding specular reflection out of reflected light produced by light emitted from a light source being reflected at the toner image and an SCI color measuring function of measuring the reflected light including the specular reflection. A control value for a fixing step in the electrophotographic process is adjusted based on a first component attributed to a glossiness difference in chrominance, and a control value for a step other than the fixing step in the electrophotographic process is adjusted based on a second component attributed to another factor in the chrominance. | 11-22-2012 |
20120328310 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM STORING CONTROL PROGRAM THEREFOR - An image forming apparatus comprising image forming units, an image bearing member for bearing images, a table indicative of a correspondence relationship between temperature and an amount of a color misregistration. A pattern detection unit detects color registration patterns on the image bearing member. A calculation unit calculates the amount of the color misregistration based on the detection result of the patterns. A color registration adjustment unit has a first mode in which color registration adjustment is performed based on the amount of the color misregistration, and a second mode in which the amount of the color misregistration is predicted based on temperature using the table and the color registration adjustment is performed based on the predicted amount. An updating unit makes the image forming units form the color registration patterns when the temperature reaches a predetermined temperature, and updates the table based on the amount of the color misregistration. | 12-27-2012 |
20130004188 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus which includes a color detection unit that emits a light to a color material and a reference plate on a printing material and detects the reflected light and corrects an amount of the color material upon image forming based on a detection result, comprises: a storage unit that stores, in advance, the detection result of each of the color material and the reference plate detected; and a blot detection unit that estimates the detection result for the reference plate based on a relationship between a stored reference value of each of the color material and the reference plate and the detection result of the color material, and if a difference between the estimated detection result and the detection result of the reference plate is larger than a predetermined value, detects presence of a blot. | 01-03-2013 |
20130121710 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - An image processing apparatus includes a first acquisition unit for acquiring a target value and a first surface characteristic value that is a surface characteristic of a first chart, a second acquisition unit for acquiring a second surface characteristic value that is a surface characteristic of a second chart, and a calibration unit for calibrating, when a difference between the first and second surface characteristic values is smaller than a threshold value, a mixed color using the target value and a measured value of the second chart. | 05-16-2013 |
20130121711 | IMAGE FORMING APPARATUS - An image forming apparatus includes a profile storage section that stores distortion characteristic of a scanning line, a correcting section that corrects image data by lines in the sub scanning direction, and a registration sensor that detects a pattern image for detecting color misregistration amounts in a sub scanning direction of images formed on an intermediate transfer member. When the pattern image is formed, the distortion correcting section shifts image data of the pattern image by lines in the sub scanning direction so that, with reference to a detection position of the registration sensor, a positional displacement amount of the pattern image in the sub scanning direction becomes less than or equal to ½ of a scanning-line distance, in accordance with a positional displacement amount of the scanning line in the sub scanning direction at a detection position of the registration sensor along a main scanning direction. | 05-16-2013 |
20130243451 | IMAGE FORMING APPARATUS - Temperature of a printing medium | 09-19-2013 |
20130272730 | IMAGE FORMING APPARATUS - The image forming apparatus, while an image forming mode is executed, during a period from start of the image forming mode until a toner image to be transferred onto a recording material is primarily transferred onto an intermediate transfer member from one of the plurality of image bearing members, which is positioned on the uppermost stream in a rotation direction of the intermediate transfer member, a toner patch (T) is formed on at least one image bearing member and the toner patch (T) is provided to a primary transfer portion. Thus, without using waste toner as a lubricant, fluctuations in circumferential surface speed, which are generated in the intermediate transfer member during the image forming operation, may be reduced. | 10-17-2013 |
20130272731 | COLOR-IMAGE FORMING APPARATUS - In an image forming apparatus that forms an electrostatic latent image for detection on a photosensitive member by light irradiation and performs color-misregistration correction control on the basis of detection of a change in detection current due to the detecting electrostatic latent image passing through a processing unit disposed close to the periphery of the photosensitive member, the intensity of at least one of the apply voltage of the processing unit and the output of the light irradiation unit is set higher than that during normal image formation. | 10-17-2013 |
20140029963 | COLORIMETRY APPARATUS AND IMAGE FORMING APPARATUS - The colorimetry apparatus includes a light source for emitting light to a surface of a detected object, a diffraction grating for spectrally separating, for each wavelength, the light emitted from the light source and reflected by the detected object, and a line sensor including multiple pixels, for receiving the light, which is spectrally separated by the diffraction grating, for the each wavelength by the multiple pixels. The light source and the line sensor are arranged on the common substrate. | 01-30-2014 |
20140037306 | NOISE REDUCTION IN TONER PRINTS - Methods for determining toner color images are provided in which fluorescent toner is used create light in a fused toner mass that reduces the appearance of noise in a noise evident portion of the fused toner mass. | 02-06-2014 |
20140044444 | COLOR IMAGE FORMING APPARATUS HAVING FUNCTION OF OBTAINING COLOR INFORMATION OF PATCH - An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the respective patches. The error of a colorimetric value due to thermochromism is reduced by placing a patch with a colorimetric value which has a low temperature dependence so as to be detected earlier, and a patch with a colorimetric value which has a high temperature dependence so as to be detected later. | 02-13-2014 |
20140199087 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming part that forms an image on a print medium with a color colorant, a clear coat agent application part that applies a clear coat agent to the print medium passed through the image forming part, and a clear coat agent application amount determination part that determines an application amount of the clear coat agent. | 07-17-2014 |
20140212157 | IMAGE FORMING APPARATUS - In accordance with one embodiment, an image forming apparatus comprises a first image forming unit, a second image forming unit and a processing unit. The first image forming unit forms an image using an erasable image forming material. The second image forming unit forms an image using an inerasable image forming material. The processing unit forms an image to be printed using an erasable image forming material with the first image forming unit, and forms a specific pattern for duplication prevention using an inerasable image forming material with the second image forming unit. | 07-31-2014 |
20150078769 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND COMPUTER PROGRAM PRODUCT - An acquisition unit acquires output data including first image data including first clear toner plane data and second image data including color plane data and second clear toner plane data. When the output data includes the first image data, a first output unit outputs first print data including first identification information representing an instruction to form an image on a first recording medium to which clear toner has not been applied to an image forming unit. When the output image includes the first image data and the second image data, a second output unit outputs second print data including second identification information representing an image formation instruction for a second recording medium to which the clear toner has been applied. When the output data does not include the first image data but includes the second image data, the second output unit outputs third print data including the first identification information. | 03-19-2015 |
20150346622 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT - An image processing apparatus includes a receiving unit to receive color plane data and white control plane data for specifying a type of a white effect to be applied to a recording medium with a white color material; a determining unit to determine image recording operation for realizing the white effect based on the white control plane data; a first generating unit to generate chromatic color material image data indicating a recording amount of a chromatic color material based on the color plane data; a second generating unit to generate white color material image data indicating a recording amount of a white color material based on the white control plane data; and a control unit to control recording of images corresponding to the chromatic color material image data and the white color material image data on one or both sides of the recording medium according to the image recording operation. | 12-03-2015 |
20150370195 | IMAGE FORMING APPARATUS FOR SUPPRESSING NON-UNIFORMITY OF AN IMAGE CAUSED BY A DIFFERENCE IN TONER PARTICLE DIAMETER - Provided is an image forming apparatus, including a first image portion that uses a first toner, and a second image portion that uses a second toner having a particle diameter greater than a particle diameter of the first toner, wherein, in a case where a first image of the first image portion is formed on a recording medium and a second image of the second image portion is formed on the first image, as compared to a case where only the first image is formed on the recording medium, an amount of the first toner per unit area of the first image increases. | 12-24-2015 |
20160062290 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD FOR REDUCING TONER BEARING AMOUNT, AND STORAGE MEDIUM THEREOF - An image forming apparatus that can reduce a toner bearing amount stably regardless of a density of an image. The image forming apparatus comprises a first generating unit which generates a reference pattern, and a second generating unit which generates, based on image data, a correction pattern for thinning out dots at a region from halftone density to high density. The image data is converted based on the reference pattern generated by the first generating unit and the correction pattern generated by the second generating unit. The image forming apparatus further comprises a photoreceptor. The photoreceptor is charged, the charged photoreceptor is exposed based on the converted image data to form an electrostatic latent image, and the electrostatic latent image is developed. | 03-03-2016 |
20160063361 | IMAGE DETECTION APPARATUS AND IMAGE FORMING APPARATUS - An improved image detection apparatus is described which can colorimetrically measure an appropriate number of patches while inhibiting unnecessary sheet discharging. A correction chart consists of a plurality of patches linearly arranged in the form of a plurality of patch arrays which are parallelly arranged in the sheet width direction. The image detection apparatus includes a paper conveying unit for conveying a sheet on which the correction chart is formed, an image reading unit and a colorimetric unit which outputs the color information of each patch by performing the colorimetric process with the patch array consisting of a line of the patche. Then, while circulating a sheet, a control unit performs switch control for switching the patch array from one to the next to be colorimetrically measured by the colorimetric unit. | 03-03-2016 |
20160085193 | IMAGE FORMING APPARATUS - A image forming apparatus having an all contact full color mode and an all contact monochrome mode. During an image forming job in which image forming is successively performed on a plurality of recording materials, in case that an image is formed using only the first image forming unit with the first image forming unit and the second image forming unit being in contact with the intermediate transfer member after an image has been formed using both of the first image forming unit and the second image forming unit, the controller determines whether the all contact full color mode or the all contact monochrome mode is performed based on an image forming speed to be performed. | 03-24-2016 |
20160116879 | IMAGE FORMING APPARATUS AND METHOD FOR CORRECTING COLOR MISREGISTRATION BY THE SAME - An image forming apparatus is provided to correct color misregistration and includes an image correcting unit. A toner density adjustment patch image forming section forms toner density adjustment patch images, and a toner density adjustment patch image misalignment measuring section measures amounts of misalignment of the images. Then, a color-misregistration correction patch image forming section forms color-misregistration correction patch images on a transfer member. A color-misregistration correcting section measures amounts of misalignment of the color-misregistration correction patch images to correct the color misregistration. The control unit controls the color-misregistration correction patch image forming section to change color-misregistration correction patch images to be formed in accordance with the amounts of misalignment of the toner density adjustment patch images measured by the toner density adjustment patch image misalignment measuring section. | 04-28-2016 |
20160139529 | IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM - An apparatus forms a patch for gray with toners of CMY for each density region of an image for image formation, acquires a chromaticity value of the patch for gray, determines whether a chroma value obtained from the chromaticity value of the patch for gray for each density region is equal to or greater than a threshold value, generates, for a first density region corresponding to a patch with respect to which a chroma value determined to be neither equal to nor greater than the threshold value is obtained, using the obtained chroma value, a correction value for decreasing the chroma value, and generates, for a second density region corresponding to a patch with respect to which a chroma value determined to be equal to or greater than the threshold value is obtained, a correction value by performing interpolation calculation using the correction value generated for the first density region. | 05-19-2016 |
20160170321 | IMAGE FORMING APPARATUS | 06-16-2016 |
20160252862 | PRINTING WITH CONTINUOUS COLOR CALIBRATION | 09-01-2016 |