发明名称 |
Sheet feeder control method, sheet feeder, and image forming apparatus |
摘要 |
A sheet feeder control method for controlling a sheet feeder of an image forming apparatus includes feeding a sheet through a sheet feed path exposable to the exterior of the sheet feeder, detecting the feeding of the sheet at at least a first position on the sheet feed path, discharging the fed sheet to the exterior of the sheet feeder, detecting the discharge of the sheet at a second position downstream of the first position in a sheet feeding direction, detecting a sheet jam during the feeding and discharging of the sheet, and if the jammed sheet is detected at the second position but not at the first position, cancelling a malfunction state due to the sheet jam when the sheet stops being detected at the second position, irrespective of whether the sheet feed path is covered or exposed. |
申请公布号 |
US8960672(B2) |
申请公布日期 |
2015.02.24 |
申请号 |
US201314095185 |
申请日期 |
2013.12.03 |
申请人 |
Ricoh Company |
发明人 |
Takenaka Ryo |
分类号 |
B65H7/02;B65H7/20;B65H5/06;B65H5/26;B65H7/06 |
主分类号 |
B65H7/02 |
代理机构 |
Harness, Dickey & Pierce P.L.C. |
代理人 |
Harness, Dickey & Pierce P.L.C. |
主权项 |
1. A sheet feeder control method for controlling a sheet feeder of an image forming apparatus, comprising:
feeding a sheet through a sheet feed path exposable to the exterior of the sheet feeder; detecting the feeding of the sheet at at least a first position on the sheet feed path; discharging the fed sheet to the exterior of the sheet feeder; detecting the discharge of the sheet at a second position downstream of the first position in a sheet feeding direction; detecting a sheet jam during the feeding and discharging of the sheet; and if the jammed sheet is detected at the second position but not at the first position, cancelling a malfunction state due to the sheet jam when the sheet stops being detected at the second position. |
地址 |
Tokyo JP |