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    Image forming apparatus
    1.
    发明公开
    Image forming apparatus 有权
    成像设备

    公开(公告)号：EP2131253A3

    公开(公告)日：2011-11-02

    申请号：EP09251475.1

    申请日：2009-06-03

    申请人： Ricoh Company, Ltd.

    发明人： Yamashina, Ryota ,  Yamamoto, Takeshi

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2039 ,  G03G2215/2032

    摘要： An image forming apparatus (1) includes an imaging section (2) and a thermal fixing device (20). The fixing device fuses a toner image formed by the imaging section onto the recording sheet (S) passing through a fixing nip. The fixing device includes a fixing member (24), a pressure member (21), a heater (30), a temperature sensor (25), and a temperature controller (26). The fixing member is rotatable, and the pressure member is pressed against the fixing member to form the fixing nip therebetween. The heater heats at least a portion of the fixing member. The temperature sensor senses a temperature of the fixing member. The temperature controller controls the temperature of the fixing member in at least one of an on-off mode and a PID mode. The temperature controller initially operates in the on-off mode upon entering recovery, and switches to the PID mode when a threshold time has elapsed after entering recovery.

    摘要翻译： 图像形成设备（1）包括成像部分（2）和热定影装置（20）。 定影装置将由成像部形成的调色剂图像定影到经过定影夹持部的记录片材（S）上。 定影装置包括固定部件（24），加压部件（21），加热器（30），温度传感器（25）和温度控制器（26）。 固定构件是可旋转的，并且压力构件被压靠固定构件以在其间形成定影辊隙。 加热器加热固定构件的至少一部分。 温度传感器感测固定构件的温度。 温度控制器在开关模式和PID模式中的至少一个中控制定影部件的温度。 温度控制器在进入恢复时最初在开 - 关模式下运行，并且在进入恢复后经过阈值时间后切换到PID模式。

    Fixing device and imge forming apparatus
    3.
    发明公开
    Fixing device and imge forming apparatus 审中-公开
    固定装置和图像形成装置

    公开(公告)号：EP2804053A1

    公开(公告)日：2014-11-19

    申请号：EP14167456.4

    申请日：2014-05-08

    申请人： Ricoh Company, Ltd.

    发明人： Yoshikawa, Masaaki ,  Seki, Takayuki ,  Arai, Yuji ,  Yoshinaga, Hiroshi ,  Mimbu, Ryuuichi ,  Seshita, Takuya ,  Tamaki, Shuntaro ,  Yamamoto, Takeshi ,  Imada, Takahiro ,  Gotoh, Hajime ,  Saito, Kazuya ,  Ikebuchi, Yutaka ,  Shimokawa, Toshihiko ,  Yuasa, Shuutaroh ,  Yamaji, Kensuke ,  Suzuki, Akira

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2053 ,  G03G2215/2035

    摘要： A fixing device (20) includes a fixing rotator (21) and a nip formation assembly (24) contacting the fixing rotator (21). An opposed rotator (22) presses against the nip formation assembly (24) via the fixing rotator (21) to form a fixing nip (N) between the fixing rotator (21) and the opposed rotator (22). A support (25), disposed opposite an inner circumferential surface of the fixing rotator (21), supports the nip formation assembly (24). A heater (23), disposed opposite the inner circumferential surface of the fixing rotator (21), heats the fixing rotator (21). A reflector (27), disposed opposite an outer circumferential surface of the fixing rotator (21), reflects heat radiated from the fixing rotator (21) onto the fixing rotator (21). The reflector (27) spans a circumferential span of the fixing rotator (21) where the fixing rotator (21) is spaced apart from the support (25) with a decreased interval therebetween.

    摘要翻译： 定影装置（20）包括定影旋转体（21）和与定影旋转体（21）接触的辊隙形成组件（24）。 相对转动体22通过定影旋转体21压靠在压区形成组件24上以在定影旋转体21和相对旋转体22之间形成定影压区N. 与定影旋转体（21）的内周面相对配置的支撑体（25）支撑辊隙形成组装体（24）。 与定影旋转体（21）的内周面相对配置的加热器（23）加热定影旋转体（21）。 与定影旋转体21的外圆周表面相对设置的反射体27将从定影旋转体21辐射的热量反射到定影旋转体21上。 反射器（27）跨越定影旋转体（21）的周向跨度，其中定影旋转体（21）与支撑体（25）间隔开减小间隔。