发明授权
- 专利标题： Image forming apparatus for forming image on record medium
- 专利标题（中）： 用于在记录介质上形成图像的图像形成装置
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申请号： US11735731申请日： 2007-04-16
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公开(公告)号： US07483158B2公开(公告)日： 2009-01-27
- 发明人: Hiromichi Hayashihara
- 申请人： Hiromichi Hayashihara
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba,Toshiba Tec Kabushiki Kaisha
- 当前专利权人： Kabushiki Kaisha Toshiba,Toshiba Tec Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo JP Tokyo
- 代理机构： Amin, Turocy & Calvin, LLP
- 主分类号： H04N1/028
- IPC分类号： H04N1/028
摘要：
A laser beam is irradiated on a record medium, a speckle generated by surface scattering is measured by an image sensor, speckle information obtained is subjected to FFT transform, and a paper quality of the record medium is discriminated from a peculiar pattern due to roughness of the surface of the record medium.
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