| 摘要 |
PROBLEM TO BE SOLVED: To provide each of sheets of various sheet sizes with an appropriate curl, in an accumulation section of a double-sided printer. SOLUTION: The double-sided printer includes: a first printing section printing on one surface of the sheet; the accumulation section 5 accumulating the sheets each printed on the one surface; and a second printing section printing on the other surface of the sheet carried out of the accumulation section 5. The accumulation section includes: a holding/transfer device 53 serially holding the sheets carried in, and transferring the sheets from a carry-in position to a carry-out position in a state where the sheets are stacked with a prescribed interval with one another; a curl providing tool 52 allowing the sheets carried in to protrude forward from the carry-in position toward carry-out position at a position opposite to the right and left lower end portion of the sheets carried in, and providing the sheet with the curl curving with the printed one surface inward; a size information acquiring instrument acquiring size information of the sheet; and a controller 54 controlling the curl providing means such that the larger the sheet size is, the smaller the forward protrusion amount of the curl providing tool becomes, based on the obtained size information of the sheet. COPYRIGHT: (C)2011,JPO&INPIT
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