发明名称 |
Sheet post-processing device folding sheet output from image forming device, and sheet folding method |
摘要 |
Provided is a sheet post-processing device folding a sheet output from an image forming device at a predetermined target fold position, comprising: a first rotating body pair conveying the sheet; a second rotating body pair disposed along a sheet conveyance path and further downstream than the first rotating body pair in a sheet conveyance direction; a push unit moving a push member in a direction transverse to the sheet conveyance path so that, while the sheet is being conveyed, the push member comes into contact with the sheet and pushes the sheet into a nip of the second rotating body pair, the push member being disposed opposite the second rotating body pair across the sheet conveyance path; and a control unit controlling the push unit so that the pushing operation of the push member is performed at a timing preset according to the target fold position. |
申请公布号 |
US8851464(B2) |
申请公布日期 |
2014.10.07 |
申请号 |
US201213645161 |
申请日期 |
2012.10.04 |
申请人 |
Konica Minolta, Inc. |
发明人 |
Shimizu Satoru |
分类号 |
B65H45/18;G03G15/00 |
主分类号 |
B65H45/18 |
代理机构 |
Holtz, Holtz, Goodman & Chick PC |
代理人 |
Holtz, Holtz, Goodman & Chick PC |
主权项 |
1. A sheet post-processing device that folds a sheet output from an image forming device at a predetermined target fold position, the sheet post-processing device comprising:
a first rotating body pair configured to convey the sheet; a second rotating body pair disposed along a sheet conveyance path and further downstream than the first rotating body pair in a sheet conveyance direction; a push unit configured to move a push member in a direction transverse to the sheet conveyance path so that, while the sheet is being conveyed, the push member comes into contact with the sheet and pushes the sheet into a nip of the second rotating body pair, the push member being disposed opposite the second rotating body pair across the sheet conveyance path; and a control unit configured to control the push unit so that the pushing operation of the push member is performed at a timing preset according to the target fold position; wherein: a movement speed at which the push member is moved during the pushing operation is set to be faster than a conveyance speed at which the first rotating body pair conveys the sheet; and the timing is preset so that:
the pushing operation is initiated such that, when the push member comes into contact with the sheet, the target fold position is located a predetermined distance downstream, in the sheet conveyance direction, from a contact position where the push member is in contact with the sheet; anddue to a difference between the movement speed and the conveyance speed, as the push member pushes the sheet, a portion of the sheet located further downstream than the contact position in the sheet conveyance direction is drawn back in a direction opposite to the sheet conveyance direction and the sheet is drawn into the nip of the second rotating body pair first at the target fold position. |
地址 |
Tokyo JP |