发明名称 |
IMAGE READER, IMAGE FORMING APPARATUS, AND METHOD OF CORRECTING OUTPUT VALUES |
摘要 |
Disclosed is an image reader including a first reading unit that reads an image on a front surface of an object placed on a first background member to output a first output value; a second reading unit that reads an image on a back surface of the object placed on a second background member which is different from the first background member to output a second output value; a ground output detecting unit that detects first and second ground output values based on the first and second output values, respectively; a thickness calculating unit that calculates the thickness of the object based on an output ratio between the first ground output value and the second ground output value; and an output correction unit that corrects the first and second output values based on the calculated thickness of the object. |
申请公布号 |
US2012162729(A1) |
申请公布日期 |
2012.06.28 |
申请号 |
US201113311849 |
申请日期 |
2011.12.06 |
申请人 |
KURAKATA TAKAHIRO;RICOH COMPANY, LTD. |
发明人 |
KURAKATA TAKAHIRO |
分类号 |
G03F3/00;H04N1/40 |
主分类号 |
G03F3/00 |
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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