发明授权
US08929761B2 Image forming method and apparatus having induction heat fixing device with temperature sensing of switching element
有权
具有感应热定影装置的图像形成方法和装置,具有开关元件的温度感测
- 专利标题: Image forming method and apparatus having induction heat fixing device with temperature sensing of switching element
- 专利标题(中): 具有感应热定影装置的图像形成方法和装置,具有开关元件的温度感测
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申请号: US13448667申请日: 2012-04-17
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公开(公告)号: US08929761B2公开(公告)日: 2015-01-06
- 发明人: Hitoshi Wakide , Atsushi Yamaguchi
- 申请人: Hitoshi Wakide , Atsushi Yamaguchi
- 申请人地址: JP Chiyoda-ku, Tokyo
- 专利权人: Konica Minolta Business Technologies, Inc.
- 当前专利权人: Konica Minolta Business Technologies, Inc.
- 当前专利权人地址: JP Chiyoda-ku, Tokyo
- 代理机构: Buchanan Ingersoll & Rooney PC
- 优先权: JP2011-094422 20110420
- 主分类号: G03G15/20
- IPC分类号: G03G15/20 ; H05B6/06
摘要:
An image forming apparatus uses a switching element to switch current flowing to an excitation coil, so that a heating layer in a fixing member produces heat that fixes an image to a transported sheet. Based on a change in temperature of the switching element over time, a prediction unit determines, at a predetermined first time point, a predicted temperature of the switching element at a second time point at which a tip of the sheet is scheduled to arrive at the fixing member. When the predicted temperature is at least a predetermined value, a control unit controls power supplied to the excitation coil by restricting switching of the switching element and lifting the restriction, so that by the second time point the detected temperature of the fixing member reaches a temperature necessary for fixing.
公开/授权文献
- US20120269533A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 公开/授权日:2012-10-25
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