Patent application number | Description | Published |
20110049794 | IMAGE FORMING APPARATUS - The present invention provides a sheet conveying apparatus and an image forming apparatus capable of preventing occurrence of skew feeding when correcting sheet lateral deviation. A pair of lateral-shift correcting rollers | 03-03-2011 |
20110280599 | IMAGE FORMING APPARATUS - A low density area is caused at a trailing edge of an image formed on a photosensitive drum. This low density area is less likely to be caused when the density of the image is higher and the humidity is lower. To prevent generation of such low density area, if a color misregistration detection toner pattern having a high density is formed, in a low humidity environment, an excessively large amount of toner is consumed unnecessarily. In response, the density of the color misregistration detection toner pattern is adjusted based on the humidity. | 11-17-2011 |
20110280633 | IMAGE FORMING APPARATUS - A color image forming apparatus configured to form a combination toner pattern including a second toner image formed downstream in a conveying direction of an intermediate transfer belt on a first toner image and a third toner image formed upstream in the conveying direction of the intermediate transfer belt on the first toner image so that the second and the third toner images cover at least a portion of the first toner image. | 11-17-2011 |
20120288297 | COLOR MISALIGNMENT CORRECTION IN IMAGE FORMING APPARATUS WHICH FORMS MULTICOLOR IMAGE - A pattern detection sensor receives light diffused by a pattern image, and it is difficult for the pattern detection sensor to detect a low-reflectance black pattern. Considering this, a high-reflectance yellow pattern is formed as the background of the low-reflectance black pattern. Even the diffused light reception type pattern detection sensor can detect the black pattern. The yellow pattern formed as the background is also used as a yellow pattern for detecting a color misalignment amount with respect to a pattern of magenta working as a reference color. The consumption amount of yellow toner is reduced while maintaining the color misalignment correction precision. | 11-15-2012 |
20130022377 | IMAGE FORMING APPARATUS THAT CARRIES OUT COLOR REGISTRATION ADJUSTMENT, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM - An image forming apparatus which is capable of improving the accuracy of detecting the amount of misregistration. A control unit controls a plurality of image forming units so as to form a color registration pattern on a image bearing member. A detection unit detects diffusely reflected light reflected on the image bearing member and the color registration pattern. The control unit compares a first output value output by the detection unit detecting the surface of the image bearing member with a second output value output by the detection unit detecting a low-reflectivity toner pattern formed on the image bearing member, and determines a density of the color registration pattern corresponding to the low-reflectivity toner pattern based on a result of the comparison. | 01-24-2013 |
20130187329 | IMAGE FORMING APPARATUS - To simplify control of a sheet feeing/conveying system while preventing a step-out phenomenon, saving power, and reducing cost, provided is an image forming apparatus which detects a load angle of a motor (M | 07-25-2013 |
20130187332 | IMAGE FORMING APPARATUS - To simplify control of a sheet feeding/conveying system while preventing a step-out phenomenon and saving power, provided is an image forming apparatus which detects a load angle of a first motor (M | 07-25-2013 |