Abstract: An image processing device supplies image data to be used in an image forming apparatus, the image processing device including a control unit configured to process the image data in accordance with an image quality processing parameter, wherein the control unit distinguishes between an overprint region in which overprinting of a coat layer of a transparent material is to be performed on a transfer medium and a non-overprint region in which the overprinting is not to be performed, and adjusts a difference in image quality between the overprint region and the non-overprint region by using the image quality processing parameter.

Abstract: An image processing apparatus, including: an output image processing section which performs, on image data, predetermined image processing according to image formation; an output section that outputs processed image data, on which the image processing is performed, in accordance with an operation timing according to the image formation by an image forming section; a correction section which corrects setting of the image processing on the image data; an image processing control section which controls an operation of the output image processing section, stores the processed image data in an external storage section and controls the correction section to perform correction depending on a predetermined correction condition; and an output control section which reads out the processed image data from the external storage section and inputs the processed image data to the output section.

Abstract: An image processing device supplies image data to be used in an image forming apparatus, the image processing device including a control unit configured to process the image data in accordance with an image quality processing parameter, wherein the control unit distinguishes between an overprint region in which overprinting of a coat layer of a transparent material is to be performed on a transfer medium and a non-overprint region in which the overprinting is not to be performed, and adjusts a difference in image quality between the overprint region and the non-overprint region by using the image quality processing parameter.

Abstract: An image processing apparatus, including: an output image processing section which performs, on image data, predetermined image processing according to image formation; an output section that outputs processed image data, on which the image processing is performed, in accordance with an operation timing according to the image formation by an image forming section; a correction section which corrects setting of the image processing on the image data; an image processing control section which controls an operation of the output image processing section, stores the processed image data in an external storage section and controls the correction section to perform correction depending on a predetermined correction condition; and an output control section which reads out the processed image data from the external storage section and inputs the processed image data to the output section.

Abstract: Provided is an image processor obtaining image data divided in packing units, comprising: a parallel processing unit performing an image conversion processing in parallel on the pixel data arranged in a sub scan direction in the packing unit, based on the obtained pixel data and the intermediate value for the pixel data, to calculate an output value after the conversion of the pixel data and an index value; an intermediate value calculating unit calculating an intermediate value based on the respective index values calculated by the parallel processing units regarding pixels within a predetermined relative position range; and a first retention unit for delaying the start of the image conversion processing to one pixel data for a delay period set to be equal to or longer than a period required for obtaining the one pixel data and calculating the intermediate value for the one pixel data.

Abstract: Provided is an image processor obtaining image data divided in packing units, comprising: a parallel processing unit performing an image conversion processing in parallel on the pixel data arranged in a sub scan direction in the packing unit, based on the obtained pixel data and the intermediate value for the pixel data, to calculate an output value after the conversion of the pixel data and an index value; an intermediate value calculating unit calculating an intermediate value based on the respective index values calculated by the parallel processing units regarding pixels within a predetermined relative position range; and a first retention unit for delaying the start of the image conversion processing to one pixel data for a delay period set to be equal to or longer than a period required for obtaining the one pixel data and calculating the intermediate value for the one pixel data.

Abstract: An image forming apparatus comprises a signal generator generating a clock signal associated with image forming in a main-scanning direction, an image forming unit including a write unit performing the image forming in the main-scanning direction on a paper relatively moving in a sub-scanning direction, in synchronization with the clock signal generated at the signal generator, an image processor converting input image data into data for driving the write unit, a magnification setting unit setting a magnification of an image in the main-scanning direction associated with a position of the image in the sub-scanning direction, a controller controlling to generate the clock signal of a frequency corresponding to a relative position in the sub-scanning direction on the basis of the magnification set at the magnification setting unit when the write unit performs the image forming on the basis of the data for driving converted at the image processor.

Abstract: An image forming apparatus including: an image forming section which forms an image on a photosensitive drum based on a reference signal which being an image write control signal of a predetermined cycle; a measuring section which detects a rotational velocity of the photosensitive drum and measures a velocity fluctuation distribution in time period of one rotation of the drum; a storage section which stores a correction value as a correction data table for each type of recording sheets, wherein the correction value is obtained based on the velocity fluctuation distribution; and a control section which corrects the cycle of the reference signal by referring the correction data table corresponding to a selected type of recording sheets, and controls the image forming section to form the image on the photosensitive drum based on the reference signal with the corrected cycle.

Abstract: Disclosed is an image forming apparatus including an image forming section in which writing units are disposed in a sub-scanning direction for each color, the writing units having writing elements arranged in a main scanning direction, and which forms a color image by superimposing an image of each color formed by the writing units, an image converting section to convert an input image data to an image data of a color which corresponds to each writing unit, a storage section to store information according to an arrangement of the writing elements for each writing unit, a correction section to correct an output timing for each pixel of converted the image data for each color based on the information according to the arrangement of the writing elements for each writing unit, a setting section to set an operation mode according to an image forming and a control section to control a correction based on the operation mode.

Abstract: Disclosed is an image processing apparatus, including: an averaging processing unit to periodically execute an averaging processing of applying an averaging pattern to a processing target image and replacing each pixel value in a pixel group corresponding to the averaging pattern with an average value of the pixel values; a resolution converting unit to perform a resolution converting processing to the processing target image, the resolution converting processing converting a resolution R1 of the processing target image into a resolution R2 (R1<R2); a screen processing unit to perform a screen processing to a processed image which has been processed by the averaging processing, the screen processing applying a screen pattern to the processed image at the same or almost the same period as that of the averaging processing; and a control unit to control the averaging processing unit, the resolution converting unit and the screen processing unit such that the averaging processing, the resolution converting pro

Abstract: An image processing apparatus includes a magnification variation section to perform a magnification variation to image data configured by arranging a plurality of lines in a sub-scan direction perpendicular to a main scan direction, in which a first pixel train is arranged as one of the plurality of lines, by inserting a pixel into a second pixel train in the sub-scan direction or by thinning-out a pixel from the second pixel train based on a set magnification variation ratio, wherein the magnification variation section inserts pixels in adjacent second pixel trains at positions that are discontinuous in the main scan direction, or thin-outs pixels in adjacent second pixel trains at positions that are discontinuous in the main scan direction.

Abstract: An image forming apparatus includes: an image forming section to perform an image formation onto a recording medium which moves relatively in a sub scanning direction, the image forming section including a writing unit including a writing element; an image processing section to convert a data for driving the writing unit based on an input image data; a zoom ratio setting section to set zoom ratios of an image in a main scanning direction respectively associated with position in the image in the sub scanning direction; and a controlling section to control the image formation in the writing unit, based on the data for driving the writing unit which has been converted in the image processing section based on the zoom ratio set on the zoom ratio setting section.

Abstract: Disclosed is an image forming apparatus including: an image memory to store image data to form an image with pixels aligned in a main scanning direction and a sub-scanning direction; a print head; and a correction section to perform correction processing on the image data to correct misalignment which occurs when an image is formed, wherein the correction section includes: a memory which can perform burst transfer; a first control section; line buffers; and a second control section, wherein the first control section successively writes the image data in the burst access unit in the memory and reads the image data in the burst access unit while controlling the address of the memory according to a first control signal generated based on previously set information concerning correction; and the second control section selects image data to output according to a second control signal generated based on the information.

Abstract: An image forming apparatus comprises a signal generator generating a clock signal associated with image forming in a main-scanning direction, an image forming unit including a write unit performing the image forming in the main-scanning direction on a paper relatively moving in a sub-scanning direction, in synchronization with the clock signal generated at the signal generator, an image processor converting input image data into data for driving the write unit, a magnification setting unit setting a magnification of an image in the main-scanning direction associated with a position of the image in the sub-scanning direction, a controller controlling to generate the clock signal of a frequency corresponding to a relative position in the sub-scanning direction on the basis of the magnification set at the magnification setting unit when the write unit performs the image forming on the basis of the data for driving converted at the image processor.

Abstract: An image forming apparatus including: an image forming section which forms an image on a photosensitive drum based on a reference signal which being an image write control signal of a predetermined cycle; a measuring section which detects a rotational velocity of the photosensitive drum and measures a velocity fluctuation distribution in time period of one rotation of the drum; a storage section which stores a correction value as a correction data table for each type of recording sheets, wherein the correction value is obtained based on the velocity fluctuation distribution; and a control section which corrects the cycle of the reference signal by referring the correction data table corresponding to a selected type of recording sheets, and controls the image forming section to form the image on the photosensitive drum based on the reference signal with the corrected cycle.

Abstract: Disclosed is an image forming apparatus including an image forming section in which writing units are disposed in a sub-scanning direction for each color, the writing units having writing elements arranged in a main scanning direction, and which forms a color image by superimposing an image of each color formed by the writing units, an image converting section to convert an input image data to an image data of a color which corresponds to each writing unit, a storage section to store information according to an arrangement of the writing elements for each writing unit, a correction section to correct an output timing for each pixel of converted the image data for each color based on the information according to the arrangement of the writing elements for each writing unit, a setting section to set an operation mode according to an image forming and a control section to control a correction based on the operation mode.

Abstract: An image forming apparatus includes each write unit for each color, in which light emitting elements are arrayed in line in a main scanning direction to superimpose images based on image data of each color and to form a color image; a first write unit in which a resolution specification of an array of the light emitting elements is a first resolution; a second write unit in which a resolution specification of an array of the light emitting elements is a second resolution; a scale factor setting unit for setting a scale factor in the main scanning direction of the image data of the color corresponding to the first write unit or the second write unit based on the first resolution and the second resolution; and a scaling unit for scaling the image data in the main scanning direction based on the set scale factor.

Abstract: Disclosed is an image processing apparatus, including: an averaging processing unit to periodically execute an averaging processing of applying an averaging pattern to a processing target image and replacing each pixel value in a pixel group corresponding to the averaging pattern with an average value of the pixel values; a resolution converting unit to perform a resolution converting processing to the processing target image, the resolution converting processing converting a resolution R1 of the processing target image into a resolution R2 (R1<R2); a screen processing unit to perform a screen processing to a processed image which has been processed by the averaging processing, the screen processing applying a screen pattern to the processed image at the same or almost the same period as that of the averaging processing; and a control unit to control the averaging processing unit, the resolution converting unit and the screen processing unit such that the averaging processing, the resolution converting pro

Abstract: Disclosed is an image forming apparatus including: an image forming section to perform an image formation onto a recording medium which moves relatively in a sub scanning direction, the image forming section including a writing unit including a writing element; an image processing section to convert a data for driving the writing unit based on an input image data; a zoom ratio setting section to set zoom ratios of an image in a main scanning direction respectively associated with position in the image in the sub scanning direction; a controlling section to control the image formation in the writing unit, based on the data for driving the writing unit which has been converted in the image processing section based on the zoom ratio set on the zoom ratio setting section.

Abstract: Disclosed herein is an image processing device, including: a gradation converter which converts a gradation value of a target pixel in multilevel image data so that the number of gradations decreases; a resolution which converts creating high-resolution image data having a resolution higher than the multilevel image data by outputting a pixel block capable of reproducing a gradation value which is same as the gradation value obtained by the gradation converter, the pixel block including a predetermined number of pixels; and an error diffusion section which executes a processing for diffusing an error value between the gradation values before a gradation conversion and after the gradation conversion by the gradation converter to peripheral pixels of the target pixel.