发明名称 |
Image-forming apparatus for measuring the amount or density of toner of a toner patch |
摘要 |
An image-forming apparatus includes an optical sensor including a light-receiving element that receives light reflected by a belt-like moving medium to produce an output corresponding to the amount of light received. This image-forming apparatus determines the density of a toner patch image formed by an image-forming unit by correcting an output produced when the optical sensor detects the toner patch image at a position on a roller disposed opposite the sensor on the basis of an output produced by the optical sensor in an area where no toner image is formed on the belt-like moving medium at the same position on the opposite roller as the position where the sensor detects the toner patch image. |
申请公布号 |
US8391736(B2) |
申请公布日期 |
2013.03.05 |
申请号 |
US201113089148 |
申请日期 |
2011.04.18 |
申请人 |
SHIDA TOMONORI;CANON KABUSHIKI KAISHA |
发明人 |
SHIDA TOMONORI |
分类号 |
G03G15/00 |
主分类号 |
G03G15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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