公开(公告)号：US20110286775A1

公开(公告)日：2011-11-24

申请号：US13092259

申请日：2011-04-22

申请人： Yasuhiro ISHIHARA ,  Isao Watanabe ,  Toshiaki Tanaka ,  Kosuke Sasaki

发明人： Yasuhiro ISHIHARA ,  Isao Watanabe ,  Toshiaki Tanaka ,  Kosuke Sasaki

IPC分类号： G03G15/20

CPC分类号： G03G15/2042

摘要： The present invention provides a fixing device for fixing an unfixed image onto a recording sheet by applying heat and pressure to the unfixed image while the recording sheet having the unfixed image formed thereon is passing through a fixing nip, the fixing nip being formed by pressing a pressurizing roller against a heat generation belt, wherein the heat generation belt rotates around a rotational axis and includes a resistive heat layer extending in a rotational axis direction thereof, the resistive heat layer configured to generate heat when electricity is supplied thereto and having a plurality of holes provided therein, and the holes are distributed unevenly in the resistive heat layer such that electrical resistivity of the resistive heat layer varies in the rotational axis direction.

摘要翻译： 本发明提供了一种定影装置，用于通过对未定影图像施加热和压力将未定影图像固定在记录纸上，同时其上形成有未定影图像的记录片材通过定影辊隙，定影辊隙是通过压制 加热辊抵靠发热带，其中所述发热带围绕旋转轴线旋转并且包括沿其旋转轴线方向延伸的电阻加热层，所述电阻热层被配置为当向其供电时产生热量并具有多个 设置在其中的孔，并且孔在电阻热层中不均匀地分布，使得电阻热层的电阻率在旋转轴线方向上变化。

公开(公告)号：US20120076521A1

公开(公告)日：2012-03-29

申请号：US13236692

申请日：2011-09-20

申请人： Yasuhiro ISHIHARA ,  Hiroyuki Yoshikawa ,  Kosuke Sasaki ,  Isao Watanabe

发明人： Yasuhiro ISHIHARA ,  Hiroyuki Yoshikawa ,  Kosuke Sasaki ,  Isao Watanabe

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/55 ,  G03G15/553

摘要： A fixing device for fixing an unfixed toner image on a recording sheet by passing the recording sheet through a fixing nip and applying heat and pressure to the recording sheet, the fixing device comprising: a heater including a resistance heater part and a supporting member, the resistance heater part having a positive resistance-temperature characteristic in a temperature range above a predetermined level, and the supporting member being insulative and supporting the resistance heater part such that the resistance heater part applies heat to the recording sheet; a current detector detecting a current supplied to the resistance heater part; and an abnormality determiner determining whether the resistance heater part has an abnormality, based on an initial current detected by the current detector at a predetermined time after a beginning of power supply to the resistance heater part and before the temperature of the resistance heater part reaches the predetermined level.

摘要翻译： 一种定影装置，用于通过使记录片材通过定影辊隙将未定影的调色剂图像定影在记录片材上，并将热和压力施加到记录片材上，该定影装置包括：加热器，包括电阻加热器部分和支撑部件， 电阻加热器部件在高于预定水平的温度范围内具有正电阻温度特性，并且所述支撑部件绝缘并支撑所述电阻加热器部分，使得所述电阻加热器部件向所述记录片材加热; 电流检测器，检测供应到电阻加热器部分的电流; 以及异常判定器，基于在电阻加热器部分的电力供应开始之后的预定时间和电阻加热器部分的温度达到之前由电流检测器检测到的初始电流来确定电阻加热器部分是否具有异常 预定水平。