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16 条记录 (耗时 0.02 秒)

    Fixing device and image forming apparatus
    1.
    发明公开
    Fixing device and image forming apparatus 审中-公开
    定影装置和图像形成装置

    公开(公告)号：EP2775356A2

    公开(公告)日：2014-09-10

    申请号：EP14154885.9

    申请日：2014-02-12

    申请人： Ricoh Company Ltd.

    发明人： Yoshinaga, Hiroshi ,  Saki, Takayuki ,  Arai, Yuji ,  Mimbu, Ryuuichi ,  Ikebuchi, Yutaka ,  Yamaguchi, Yoshiki ,  Tamaki, Shuntaro ,  Saito, Kazuya ,  Yuasa, Shuutaroh ,  Shimokawa, Toshihiko

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2053 ,  G03G2215/2035

    摘要： A fixing device (20) includes a support member (25) disposed to support a nip formation member on an inner peripheral surface of a fixing belt (21). The support member includes a parallel portion (25a) that supports the nip formation member (24) and extends parallel to a sheet transport direction in a nip portion, and a rise portion (25b) that extends from the parallel portion in a direction drawn apart from the nip portion. The rise portion is inclined to the parallel portion such that an inclination direction of the rise portion is substantially parallel to a virtual straight line (L) connecting a center of rotation (X) of the fixing belt and an inlet point (Y) of the nip portion or falls within a range of rotational angles of ± 15° by which the virtual straight line is rotated around the center of rotation of the fixing belt.

    Transfer assembly and image forming apparatus using same
    4.
    发明公开
    Transfer assembly and image forming apparatus using same 有权
    Transferanordnung und Bilderzeugungsvorrichtung damit

    公开(公告)号：EP2343609A2

    公开(公告)日：2011-07-13

    申请号：EP10196542.4

    申请日：2010-12-22

    申请人： Ricoh Company, Ltd

    发明人： Mimbu, Ryuuichi ,  Sengoku, Kenji ,  Fujita, Junpei ,  Ichihashi, Osamu

    IPC分类号： G03G15/16

    CPC分类号： G03G15/167 ,  G03G15/1605

    摘要： A transfer assembly includes a counter member having a contact face, an engagement/disengagement unit to engage and disengage the image carrying face of image carrying member and the contact face of counter member using a cam, a pressure device to apply force to a transfer nip between the image carrying face and contact face, and a recording medium feed device to feed the recording medium to the transfer nip. When the cam is at a first rotation position, the image carrying face and contact face are separated, and when the cam is at a second rotation position, the image carrying face and contact face contact. Before the recording medium enters the transfer nip, the cam rotates from the first rotation position toward the second rotation position. After the recording medium enters the transfer nip, the cam is at the second rotation position to press the image carrying face with the contact face.

    摘要翻译： 传送组件包括具有接触面的对置构件，接合/分离单元，用于使用凸轮接合和分离图像承载构件的图像承载面和相对构件的接触面;压力装置，用于向转印压区施加力 在图像承载面和接触面之间，以及记录介质供给装置，用于将记录介质输送到转印辊隙。 当凸轮处于第一旋转位置时，图像承载面和接触面被分离，并且当凸轮处于第二旋转位置时，图像承载面和接触面接触。 在记录介质进入转印辊隙之前，凸轮从第一旋转位置朝向第二旋转位置旋转。 在记录介质进入转印辊隙之后，凸轮处于第二旋转位置，以用接触面按压图像承载面。

    Transfer-separation device and image forming apparatus
    5.
    发明公开
    Transfer-separation device and image forming apparatus 有权
    Übertragungstrennungsvorrichtungund Bilderzeugungsvorrichtung

    公开(公告)号：EP1855165A1

    公开(公告)日：2007-11-14

    申请号：EP07107421.5

    申请日：2007-05-03

    申请人： Ricoh Company, Ltd.

    发明人： Ogiyama, Hiromi ,  Uda, Junroh ,  Mimbu, Ryuuichi

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675 ,  G03G2215/00654

    摘要： A transfer-separation device includes an intermediate transfer unit (11), a secondary transfer roller (22), a repulsive roller (16), a transfer unit, and a charge-eliminating/separating member (23). The secondary transfer roller (22) and the repulsive roller (16) form a nip through which the intermediate transfer unit (11) and a recording medium pass. The transfer unit applies a bias voltage of a polarity identical to that of a toner image to the repulsive roller (16) to secondarily transfer the toner image onto the recording medium. The charge-eliminating/separating member (23) separates the recording medium from the intermediate transfer unit (11) by removing charge therefrom. The volume resistance of the repulsive roller (16) is greater than that of the secondary transfer roller (22). The surface resistance of the secondary transfer roller (22) is equal to or greater than 10 6.5 ohm.

    摘要翻译： 转印分离装置包括中间转印单元（11），二次转印辊（22），排斥辊（16），转印单元和电荷消除/分离部件（23）。 二次转印辊（22）和排斥辊（16）形成中间转印单元（11）和记录介质通过的辊隙。 转印单元将与调色剂图像的极性相同的偏置电压施加到排斥辊（16），以将调色剂图像二次转印到记录介质上。 电荷消除/分离部件（23）通过从中间转印单元（11）中除去电荷而将记录介质分离。 排斥辊（16）的体积电阻大于二次转印辊（22）的体积电阻。 二次转印辊（22）的表面电阻等于或大于10 6.5欧姆。

    Transfer device and image forming apparatus
    7.
    发明公开
    Transfer device and image forming apparatus 审中-公开
    转印装置和图像形成装置

    公开(公告)号：EP2581793A3

    公开(公告)日：2017-05-24

    申请号：EP12187780.7

    申请日：2012-10-09

    申请人： Ricoh Company, Ltd.

    发明人： Mimbu, Ryuuichi ,  Tanaka, Shinya ,  Ishii, Hirokazu ,  Shimizu, Yasunobu ,  Nakamura, Keigo ,  Ogiyama, Hiromi ,  Sengoku, Kenji

    IPC分类号： G03G15/16

    CPC分类号： G03G15/168

    摘要： A transfer device comprises a freely rotatable transferring member (56) contacting an image bearing member (51) to form a transfer nip therebetween; a transfer bias applying member (200) to apply a first bias (202) created by superimposing an alternating current component on a direct current component to the transferring member (56) to transfer a toner image borne on the image bearing member (51) to a recording medium (P) in the transfer nip; and an applicator (5) to apply protective agent (62) to a surface of the transferring member (56).

    摘要翻译： 一种转印装置包括一个与图像承载元件（51）接触以在它们之间形成转印辊隙的可自由转动的转印元件（56） 转印偏压施加部件（200），用于向转印部件（56）施加通过将直流分量上的交流分量叠加而产生的第一偏压（202），以将承载在所述图像承载部件（51）上的调色剂图像转印到 记录介质（P）在转印夹中; 以及将保护剂（62）施加到转印构件（56）的表面的施加器（5）。

    Fixing device and imge forming apparatus
    8.
    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。

    Image forming apparatus and image forming method
    9.
    发明公开
    Image forming apparatus and image forming method 有权
    成像装置和成像方法

    公开(公告)号：EP2778795A1

    公开(公告)日：2014-09-17

    申请号：EP13198472.6

    申请日：2013-12-19

    申请人： Ricoh Company, Ltd.

    发明人： Yoshinaga, Hiroshi ,  Seki, Takayuki ,  Arai, Yuji ,  Ikebuchi, Yutaka ,  Mimbu, Ryuuichi ,  Yamaguchi, Yoshiki ,  Tamaki, Shuntaro ,  Saito, Kazuya ,  Yuasa, Shuutaroh ,  Shimokawa, Toshihiko

    IPC分类号： G03G15/20

    CPC分类号： G03G15/2039 ,  G03G15/2042 ,  G03G15/2053 ,  G03G15/55 ,  G03G2215/2035

    摘要： An image forming apparatus (1) includes a fixing device (20; 20S) including a fixing rotary body (21) and a heater (23) for heating the fixing rotary body (21). An opposed body (22) contacts the fixing rotary body (21) with releasable pressure therebetween to form a fixing nip (N) therebetween through which a recording medium is conveyed. A heat shield (27; 27S) is interposed between the heater (23) and the fixing rotary body (21) and movable in a circumferential direction of the fixing rotary body (21) to shield the fixing rotary body (21) from the heater (23) in a variable circumferential direct heating span (α) of the fixing rotary body (21) where the heater (23) is disposed opposite the fixing rotary body (21) directly. A controller (90) halts the heat shield (27; 27S) instantly when a fault occurs during a print job.

    摘要翻译： 一种图像形成装置（1）包括具有定影旋转体（21）和用于加热定影旋转体（21）的加热器（23）的定影装置（20; 20S）。 相对体（22）以可释放的压力与定影旋转体（21）接触，以在它们之间形成定影夹持部（N），记录介质通过定影夹持部传送。 在加热器（23）和定影旋转体（21）之间插入有隔热板（27; 27S），隔热板（27; 27S）可沿定影旋转体（21）的圆周方向移动，以将定影旋转体（21） （23）与定影旋转体（21）直接相对地设置在定影旋转体（21）的可变周向直接加热范围（α）中。 当打印作业期间发生故障时，控制器（90）立即停止隔热罩（27; 27S）。