| 发明名称 | Image forming apparatus and fixing device having paper dust amount obtaining unit | ||
| 摘要 | A fixing device for performing a thermal fixing for fixing an unfixed image onto a recording sheet by passing the recording sheet through a fixing nip formed by a fixing rotator and a pressing member pressing the fixing rotator. The fixing device obtains a value indicating an amount of paper dust attached to the fixing rotator, and when the amount of paper dust indicated by the obtained value is equal to or larger than a permissible amount, performs a control so that a larger amount of heat is supplied to the recording sheet in the thermal fixing than when the amount of paper dust indicated by the obtained value is smaller than the permissible amount. | ||
| 申请公布号 | US8909075(B2) | 申请公布日期 | 2014.12.09 |
| 申请号 | US201313736979 | 申请日期 | 2013.01.09 |
| 申请人 | Konica Minolta Business Technologies, Inc. | 发明人 | Aoki Toshiya |
| 分类号 | G03G15/20 | 主分类号 | G03G15/20 |
| 代理机构 | Buchanan Ingersoll & Rooney PC | 代理人 | Buchanan Ingersoll & Rooney PC |
| 主权项 | 1. A fixing device for performing a thermal fixing for fixing an unfixed image onto a recording sheet by passing the recording sheet through a fixing nip formed by a fixing rotator and a pressing member pressing the fixing rotator, the fixing device comprising: a paper dust amount obtaining unit configured to obtain a value indicating an amount of paper dust attached to the fixing rotator; a heater for heating the fixing rotator; an ON/OFF switch for turning the heater on and off; and a heat supply controller configured to, when the amount of paper dust indicated by the obtained value is equal to or larger than a permissible amount, perform a control of the ON/OFF switch so that a larger amount of heat is supplied to the recording sheet in the thermal fixing than when the amount of paper dust indicated by the obtained value is smaller than the permissible amount. | ||
| 地址 | Chiyoda-Ku, Tokyo JP | ||