发明授权
- 专利标题： Test pattern printing method, information processing apparatus, printing apparatus and density variation correction method
- 专利标题（中）： 测试图案印刷方法，信息处理装置，印刷装置和密度变化校正方法
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申请号： US09679343申请日： 2000-10-04
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公开(公告)号： US06832825B1公开(公告)日： 2004-12-21
- 发明人: Hitoshi Nishikori , Naoji Otsuka , Hitoshi Sugimoto , Kiichiro Takahashi , Osamu Iwasaki , Kaneji Yamada , Minoru Teshigawara , Takeshi Yazawa , Toshiyuki Chikuma
- 申请人： Hitoshi Nishikori , Naoji Otsuka , Hitoshi Sugimoto , Kiichiro Takahashi , Osamu Iwasaki , Kaneji Yamada , Minoru Teshigawara , Takeshi Yazawa , Toshiyuki Chikuma
- 优先权： JP11-284936 19991005; JP11-284937 19991005
- 主分类号： B41J201
- IPC分类号： B41J201
摘要：
An apparatus and method capable of obtaining an output characteristic of the print unit and determining a correction value for an output density, without using an expensive scanner. To realize this, a nozzle array consisting of a plurality of nozzles provided in the print head is divided into a plurality of nozzle blocks [a] to [d] and each of patches is formed by using the nozzles of the same nozzle block allocated to the patch. The patches are printed in a size and shape that allows the densities of the patches to be optically detected by the density sensor. A test pattern comprising these patches is measured by the density sensor to make a density correction for each nozzle of the print head.