| 发明名称 | Image forming apparatus correcting uneven density caused by uneven rotation | ||
| 摘要 | An image forming apparatus corrects, for uneven density caused by uneven rotation of a rotation speed of a rotation member, and diffuses so as to reduce the uneven density, for a pixel of interest whose density exceeds the upper limit of the output density out of the pixels of the corrected image data, the excess of the density more than the upper limit to a plurality of peripheral pixels while maintaining the center of gravity of the density. | ||
| 申请公布号 | US8843037(B2) | 申请公布日期 | 2014.09.23 |
| 申请号 | US201213354778 | 申请日期 | 2012.01.20 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Ogawa Yuichi;Takayama Yuuji |
| 分类号 | G03G15/01;G03G15/00 | 主分类号 | G03G15/01 |
| 代理机构 | Fitzpatrick, Cella, Harper & Scinto | 代理人 | Fitzpatrick, Cella, Harper & Scinto |
| 主权项 | 1. An image forming apparatus comprising: a rotation member on which an image is formed; and a correction unit configured to correct, for uneven density caused by uneven rotation of a rotation speed of said rotation member, image data to reduce the uneven density, wherein said correction unit is configured to diffuse, for a pixel of interest whose density exceeds an upper limit of an output density out of pixels of the corrected image data, an excess of the density more than the upper limit to a plurality of peripheral pixels while maintaining a center of gravity of the density. | ||
| 地址 | Tokyo JP | ||