发明名称 |
SHEET SUPERPOSING FEEDING DETECTION METHOD, SHEET FEEDING DEVICE AND IMAGE READING DEVICE USING THIS |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a superposing feeding detection method for a sheet and a sheet feeding device, which exactly determine one sheet or a plurality of sheets of wide sheets having different length in a conveying direction on the midway of conveying and exactly and particularly detecting superposing of two upper and lower sheets and simultaneously detecting superposing largely deviated in a longitudinal direction. <P>SOLUTION: At least two first and second conveying means 4, 5 are arranged in a sheet guide 3 for guiding the sheets on a stacker 1 to processing positions such as image-reading and printing. A superposing feeding detection means 6 for detecting the superposing of the sheet during movement at a predetermined length area (measurement length) is arranged between the first conveying means 4 and the second conveying means 5. A sheet length recognition means 50 for discriminating conveying direction length of the sheet placed on the above stacker 1 to at least two and a determination means for determining multiple conveying of the sheet based on the detection data from the superposing feeding detection means 6 are provided. The determination means is constituted such that the superposing of the sheet is determined by the detection data of one measurement area selected from a plurality of measurement areas based on information obtained from the sheet length recognition means 50. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
申请公布号 |
JP2005162423(A) |
申请公布日期 |
2005.06.23 |
申请号 |
JP20030405438 |
申请日期 |
2003.12.04 |
申请人 |
NISCA CORP |
发明人 |
SANO KAZUHIDE;HIROSE SHUNICHI |
分类号 |
G03G21/00;B65H5/06;B65H7/06;B65H9/14 |
主分类号 |
G03G21/00 |
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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