公开(公告)号：EP3081993B1

公开(公告)日：2020-05-06

申请号：EP16165385.2

申请日：2016-04-14

申请人： Ricoh Company, Ltd.

发明人： HEMMI, Kaori ,  OKAMOTO, Masami ,  KUBOTA, Keisuke ,  KIKUSHIMA, Yuuki ,  YUASA, Shuutaroh ,  HIROSE, Fumihiro ,  YAMAJI, Kensuke ,  NOZAWA, Kenji

IPC分类号： G03G15/20

公开(公告)号：EP3404490A1

公开(公告)日：2018-11-21

申请号：EP16885126.9

申请日：2016-12-26

申请人： Ricoh Company, Ltd.

发明人： SAITOH, Seiji ,  KUBOTA, Keisuke ,  OKAMOTO, Masami ,  NOZAWA, Kenji ,  HIROSE, Fumihiro ,  YAMAJI, Kensuke ,  YUASA, Shuutaroh ,  KIKUSHIMA, Yuuki ,  HEMMI, Kaori ,  KANDA, Yuuta

IPC分类号： G03G15/20

CPC分类号： G03G15/2028 ,  G03G15/20 ,  G03G15/6532

摘要： A separation member 36 that separates a conveyance object P from a rotation member 26, the conveyance object P having been sent out from a nip N2 that is formed by two rotation members 26 and 27 that are in contact with one another. The separation member 36 includes a wavy part 39 directed toward the nip N2 and inclined from a normal to a center line of the two rotation members 26 and 27. The wavy part 39 covers a sheet passing zone Q where the conveyance object P can come into contact with the separation member 36 along a conveyance direction B and along a width direction Y of the conveyance object P. The wavy part 36 has a plurality of depressions 39a parallel to each other and extending in a direction inclined from the conveyance direction B and inclined from the width direction Y, and at least two of the depressions 39a overlap along the conveyance direction B.

公开(公告)号：EP3741574A1

公开(公告)日：2020-11-25

申请号：EP20169898.2

申请日：2020-04-16

申请人： Ricoh Company, Ltd.

发明人： YAMAJI, Kensuke ,  EGUCHI, Yosuke

IPC分类号： B41J13/10 ,  B65H31/10 ,  G03G15/00

摘要： A sheet stacker (4) includes a sheet stacking member (41), a biasing force applier (45), an angle changer (44), and a biasing force change reducer (46, 47). The sheet stacking member (41) has an upstream portion in a sheet conveyance direction. The upstream portion is movable in a vertical direction. The biasing force applier (45) is configured to bias the sheet stacking member (41) upward. The angle changer (44) is configured to change an angle of a sheet stacking face of the sheet stacking member (41), relative to a surface of a sheet (20) conveyed through a sheet conveying portion (2a). The biasing force change reducer (46, 47) is configured to restrain a change of a biasing force acting on the sheet stacking member (41), before and after a change of the angle of the sheet stacking member (41) by the angle changer (44).

公开(公告)号：EP3220202A1

公开(公告)日：2017-09-20

申请号：EP17154230.1

申请日：2017-02-01

申请人： Ricoh Company, Ltd.

发明人： KUBOTA, Keisuke ,  SAITOH, Seiji ,  OKAMOTO, Masami ,  YAMAJI, Kensuke ,  HIROSE, Fumihiro ,  YUASA, Shuutaroh ,  KANDA, Yuuta

IPC分类号： G03G15/20

CPC分类号： G03G15/2085 ,  G03G15/2028 ,  G03G15/206 ,  G03G2215/2029 ,  G03G2215/2032

摘要： A fixing device (40) includes a fixing belt (43) rotatable in a rotation direction and a nip former (41) stretching the fixing belt (43). A pressure rotator (45) presses against the nip former (41) via the fixing belt (43) to form a fixing nip (N1) between the fixing belt (43) and the pressure rotator (45), through which a recording medium is conveyed. A separator (48) is disposed downstream from the nip former (41) in a recording medium conveyance direction and stretches the fixing belt (43). A presser (49) is interposed between the fixing nip (N1) and an upstream end (48a) of the separator (48) in the rotation direction of the fixing belt (43). The presser (49) comes into contact with an inner circumferential surface of the fixing belt (43) to press the fixing belt (43) against the pressure rotator (45).

摘要翻译： 定影装置（40）包括可沿旋转方向旋转的定影带（43）和拉伸定影带（43）的压区成形器（41）。 压力转子（45）经由定影带（43）压靠压区成形器（41）以在定影带（43）和压力旋转器（45）之间形成定影压区（N1），记录介质 传送。 分离器（48）在记录介质传送方向上布置在压区成形器（41）的下游并且延伸定影带（43）。 在定影带（43）的旋转方向上，在定影夹持部（N1）和分离器（48）的上游端（48a）之间插入有加压器（49）。 加压器49与定影带43的内周面抵接而将定影带43按压在压力旋转体45上。

公开(公告)号：EP3081993A1

公开(公告)日：2016-10-19

申请号：EP16165385.2

申请日：2016-04-14

申请人： Ricoh Company, Ltd.

发明人： HEMMI, Kaori ,  OKAMOTO, Masami ,  KUBOTA, Keisuke ,  KIKUSHIMA, Yuuki ,  YUASA, Shuutaroh ,  HIROSE, Fumihiro ,  YAMAJI, Kensuke ,  NOZAWA, Kenji

IPC分类号： G03G15/20

摘要： A fixing device includes a heater (21), a fixing rotator (22), a pressure rotator (23), a slider (30), and a controller (35). The fixing rotator (22) is heated by the heater. The pressure rotator (23) presses at least a portion of the fixing rotator and forms a nip between the pressure rotator (23) and the fixing rotator (22). The fixing rotator (22) fixes an unfixed toner image on a recording material in the nip. The slider (30) slides over a surface of the fixing rotator. The controller (35) causes the slider to perform a first sliding operation for a predetermined time after a predetermined condition is satisfied. The controller causes the slider to perform a second sliding operation for a time equal to or less than the predetermined time at earlier timing than when the predetermined condition is satisfied, in addition to the first sliding operation.

摘要翻译： 定影装置包括加热器（21），固定旋转器（22），压力旋转器（23），滑块（30）和控制器（35）。 定影旋转器（22）被加热器加热。 压力旋转器（23）按压定影旋转器的至少一部分，并在压力转子（23）和定影旋转器（22）之间形成一个辊隙。 定影旋转器（22）将未定影的调色剂图像固定在辊隙中的记录材料上。 滑块（30）在固定旋转体的表面上滑动。 在满足预定条件之后，控制器（35）使得滑块执行预定时间的第一滑动操作。 除了第一滑动操作之外，控制器使得滑块在比早于满足预定条件时更早的时刻等于或小于预定时间的时间执行第二滑动操作。