| 摘要 |
PROBLEM TO BE SOLVED: To smoothly feed sheet members. SOLUTION: A medium feeder comprises a paper feeding roller 11 for feeding the sheet members, a separation member pressed by the paper feeding roller 11 at a predetermined pressing force for separating the sheet members one by one, a conveyance roller for conveying the separated sheet members, a sheet member detection part arranged on the upstream side of the conveyance roller in the conveyance direction of the sheet members for detecting the sheet members, and a pressing force changing process means for changing the pressing force after detecting the sheet members by the sheet member detection part and before starting conveying the sheet members by the conveyance roller. In this case, the pressing force is changed after the sheet member detection part detects the sheet members and before the conveyance roller starts conveying the sheet members. Accordingly, the sheet members can be smoothly fed. COPYRIGHT: (C)2007,JPO&INPIT
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