| Patent application number | Description | Published |
|---|
| 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 |
| 20090097776 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREFOR - This invention obtains a high-quality output image in which a jaggy or a disconnection of a thin line hardly stands out. An edge detection unit detects whether the pixel of interest is an edge pixel or a non-edge pixel. A screen processing unit performs screen processing for the pixel of interest to determine the output value of the N-level tone. A calculation unit performs filtering processing having a preset visual sense characteristic for an area including the pixel of interest to calculate the target value of the pixel of interest, and corrects the value of the pixel of interest so as to come close to the target value, thereby determining the output value of the N-level tone. The selector selects, according to the detection result by the edge detection unit, either the result from the calculation unit or that from the screen processing unit. | 04-16-2009 |
| 20090185024 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREFOR, AND PROGRAM - The image densities of images formed with a plurality of laser beams on the basis of image data are measured. The quantity of each of the plurality of laser beams is adjusted in accordance with the measurement result. | 07-23-2009 |
| 20090185199 | IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - An image forming apparatus is provided for performing image formation by developing an electrostatic latent image formed on an image bearing member using a recording material. The apparatus includes an input unit configured to input a color image to be formed, a specifying unit configured to specify an important color of the input color image, and a patch setting unit configured to set a patch on the basis of the important color. The apparatus also includes a calorimetric measurement unit configured to calorimetrically measure a developed patch obtained by developing an electrostatic latent image of the patch formed on the image bearing member, and a calibration unit configured to perform calibration on the basis of the calorimetric value obtained by the calorimetric measurement unit. | 07-23-2009 |
| 20090213394 | IMAGE PROCESSING APPARATUS AND METHOD THEREOF - An image processing apparatus includes an emitter which has a plurality of light emitting devices arranged in a sub-scan direction, and a former which forms an image on a photosensitive member by multi-passed scanning an identical region on the photosensitive member in a main scan direction using light beams output from the respective light emitting devices of the emitter. An input section inputs image data of an image to be formed by the image processing apparatus. A divider divides the input image data into image data for respective scans in the multi-passed scans using a mask pattern generated based on amounts of deviations from scan lines of the light beams output by the respective light emitting devices of the emitter. A supplier supplies the divided image data to the emitter in accordance with scans of the former. | 08-27-2009 |
| 20090220261 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus is provided that uses a table generated in advance to correct a gradation characteristic of an image to be formed when carrying out image forming using an image carrier. A patch is formed in an area where an image is not formed on the image carrier. A density of the patch formed on the image carrier is measured. The table is modified based on the density of the patch that has been measured. The patch is formed concurrent with image forming to the image carrier. | 09-03-2009 |
| 20110164888 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - This invention is to provide a technique of always obtaining a stable output image in image formation using toner. A supplier ( | 07-07-2011 |
