发明授权
- 专利标题: Image forming apparatus
- 专利标题(中): 图像形成装置
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申请号: US12819826申请日: 2010-06-21
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公开(公告)号: US08447197B2公开(公告)日: 2013-05-21
- 发明人: Hiroyuki Yamazaki
- 申请人: Hiroyuki Yamazaki
- 申请人地址: JP Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Canon USA Inc. IP Division
- 优先权: JP2009-149806 20090624; JP2010-116395 20100520
- 主分类号: G03G15/00
- IPC分类号: G03G15/00
摘要:
An image forming apparatus, which appropriately performs a banding correction even if similar banding does not always occur at a same position of a recording medium, detects reflected light from a test patch image and obtains information on a density change caused by a periodically-uneven rotation of a rotation member, and performs a density correction at an arbitrary position of a print image based on the acquired information on the density change.
公开/授权文献
- US20100329710A1 IMAGE FORMING APPARATUS 公开/授权日:2010-12-30