公开(公告)号：US09250588B1

公开(公告)日：2016-02-02

申请号：US14434946

申请日：2014-08-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Nakajima

IPC: G03G15/20

CPC classification number: G03G15/2085 ,  G03G15/2017 ,  G03G15/2028 ,  G03G15/2053 ,  G03G2215/00151 ,  G03G2215/2035

Abstract: A fixing device (15) of the present invention includes a fixing roller (30) having a fixing belt (35) heated by a heat source (32) around an outer circumference of an elastic layer (34) provided around a core metal (33); and a pressuring roller (31) provided so as to pressure-contact with the fixing roller (30) and to form a fixing nip (N) passing a recording medium (P) having a toner image transferred through, wherein, in both end faces (S1) in an axial direction of the elastic layer (34), annular gaps (70) are recessed separate from the core metal (33) and fixing belt (35) along a circumference direction, bottom parts (71) of the annular gaps (70) are configured so as to be positioned inside both end faces (S3) in the axial direction of the pressuring roller (31).

Abstract translation: 本发明的固定装置（15）包括定影辊（30），该定影辊（30）具有围绕设置在芯金属（33）周围的弹性层（34）的外周围的由热源（32）加热的定影带 ）; 以及设置成与定影辊（30）压力接触并形成通过具有转印了调色剂图像的记录介质（P）的定影辊隙（N）的加压辊（31），其中在两个端面 （S1）在弹性层（34）的轴向方向上，环状间隙（70）沿着圆周方向与芯金属（33）和定影带（35）分开凹陷，环状间隙 （70）构造成位于加压辊（31）的轴向的两个端面（S3）的内侧。

公开(公告)号：US11054777B2

公开(公告)日：2021-07-06

申请号：US17079059

申请日：2020-10-23

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Nakajima

IPC: G03G15/20

Abstract: Provided is a fixing device that makes it difficult for a sheet to adhere to a heating unit when the sheet is caught in a gap between the heating unit and a fixing member, and an image forming apparatus that includes the fixing device. The fixing device includes a fixing belt, a pressure roller, an IH heater, and convex portions. The fixing belt is rotatable. The pressure roller forms a pressure region in which the sheet is held and conveyed between the pressure roller and the fixing belt. The IH heater is such that the surface facing the outer peripheral surface of the fixing belt is formed in a shape along the outer peripheral surface, and the IH heater heats the fixing belt. The convex portions are formed on the surface of the IH heater facing the outer peripheral surface of the fixing belt.

公开(公告)号：US09141045B2

公开(公告)日：2015-09-22

申请号：US14339595

申请日：2014-07-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shinobu Ohata ,  Mitsutoshi Takemoto ,  Koshiro Tomimori ,  Eiji Nakajima ,  Tomohiko Yamakawa ,  Naoto Miyakoshi ,  Akihiro Yamaguchi ,  Ryo Matsuyama

IPC: G03G15/20

CPC classification number: G03G15/2028 ,  G03G2215/00573

Abstract: A fixing device includes a fixing member, a pressing member and a separating member. The fixing member is provided with a sheet passing region and a non-sheet passing region. The separating member has a separating plate and a restricting piece. The restricting piece is provided with a curving surface on a region including the contacting portion with the non-sheet passing region. The curving surface has a first curving area and a second curving area. The first curving area is provided on a downstream side from the contacting portion in a rotating direction of the fixing member. The second curving area is provided on an upstream side from the contacting portion in the rotating direction of the fixing member. The second curving area has a radius of curvature larger than that of the first curving area.

Abstract translation: 定影装置包括固定构件，按压构件和分离构件。 固定构件设置有片材通过区域和非片材通过区域。 分离构件具有分隔板和限制件。 限制件在包括与非片材通过区域的接触部分的区域上设置有弯曲表面。 弯曲表面具有第一弯曲区域和第二弯曲区域。 第一弯曲区域沿着固定构件的旋转方向设置在接触部分的下游侧。 第二弯曲区域沿着固定构件的旋转方向从接触部分的上游侧设置。 第二弯曲区域的曲率半径大于第一弯曲区域的曲率半径。

公开(公告)号：US09063484B2

公开(公告)日：2015-06-23

申请号：US13770903

申请日：2013-02-19

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Eiji Nakajima

IPC: G03G15/20 ,  B65G15/60

CPC classification number: G03G15/2053 ,  B65G15/60 ,  G03G2215/00151

Abstract: A fixing device includes a first roller rotatable about a first axis of rotation, a second roller rotatable about a second axis of rotation, a fixing belt rotatably wound between the first roller and the second roller, and auxiliary rings. At least one of the rollers of the first roller and the second roller includes a rotation maintaining part configured to hold the fixing belt rotatably and a restricting flange protruding from an outer peripheral surface of each of opposite end parts in a direction of an axis of rotation of the rotation maintaining part. The auxiliary rings are located outside the opposite end parts in the direction of the axis of rotation of the rotation maintaining part, have an outer diameter larger than the restricting flange, and are rotatable independently of the restricting flange.

Abstract translation: 定影装置包括可围绕第一旋转轴线旋转的第一滚子，可围绕第二旋转轴线旋转的第二滚筒，可旋转地缠绕在第一滚筒和第二滚筒之间的定影带以及辅助环。 第一辊和第二辊的至少一个辊包括旋转保持部，其构造成可旋转地保持定影带;以及限制凸缘，其从相对端部的外周面沿旋转轴线的方向突出 的旋转维持部。 辅助环位于旋转保持部的旋转轴线方向的相对端部的外侧，外径大于限制凸缘，并且能够独立于限制凸缘而旋转。

公开(公告)号：US12248264B2

公开(公告)日：2025-03-11

申请号：US18460800

申请日：2023-09-05

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Nakajima

IPC: G03G15/20

Abstract: A fixing device includes a first rotary member, a second rotary member, a pressing mechanism, and a heat-levelling member. The second rotary member is formed in a reverse-camber shape. The pressing mechanism can form a fixing nip and can reduce the pressing force between the first and second rotary members. The heat-levelling member, in a reduced-pressure state where the pressing force is lower than the fixing nip pressure, stays in contact with a part of the outer circumferential surface of the second rotary member elsewhere than the fixing nip, over the entire range in the rotation axis direction, to equalize the surface temperature of the second rotary member and, in a state where the pressing force is equal to or higher than the fixing nip pressure, stays away from the outer circumferential surface.

公开(公告)号：US10409217B2

公开(公告)日：2019-09-10

申请号：US15793447

申请日：2017-10-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Nakajima

IPC: G03G21/00 ,  G03G21/20 ,  G03G15/02 ,  G03G15/20

Abstract: An adsorbing member includes a plurality of adsorbing sheets and a plurality of spacers. The plurality of adsorbing sheets adsorb a floating matter. The plurality of spacers are each provided between the adsorbing sheets to form a laminate that the plurality of adsorbing sheets are overlapped via a gap.

公开(公告)号：US09733601B2

公开(公告)日：2017-08-15

申请号：US15131486

申请日：2016-04-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Kasama ,  Shoko Gon ,  Akihiro Kondo ,  Eiji Nakajima

IPC: G03G15/00 ,  G03G15/20

CPC classification number: G03G15/2053 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, an exciting coil and a belt guide. The pressuring member comes into pressure contact with the fixing belt to form a fixing nip. The exciting coil is provided at an outer diameter side of the fixing belt and configured to generate a magnetic flux to inductively heat the fixing belt. The belt guide supports the fixing belt from an inner diameter side. The belt guide includes a contact part which is in contact with an inner circumferential face of the fixing belt and a non-contact part which is not in contact with the inner circumferential face of the fixing belt. The non-contact part is provided with a slit configured to inhibit induction heating of the non-contact part due to the magnetic flux generated by the exciting coil.

公开(公告)号：US09588469B2

公开(公告)日：2017-03-07

申请号：US15132276

申请日：2016-04-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Kasama ,  Shoko Gon ,  Akihiro Kondo ,  Eiji Nakajima

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G2215/0132 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, an exciting coil and a belt guide. The pressuring member comes into pressure contact with the fixing belt to form a fixing nip. The exciting coil is provided at an outer diameter side of the fixing belt and configured to generate a magnetic flux to inductively heat the fixing belt. The belt guide supports the fixing belt from an inner diameter side. The belt guide includes a contact part which is in contact with an inner circumferential face of the fixing belt and a non-contact part which is not in contact with the inner circumferential face of the fixing belt. A magnetic flux blocking member configured to block the magnetic flux that passes through the fixing belt is provided between the fixing belt and the non-contact part.

Abstract translation: 定影装置包括定影带，加压构件，励磁线圈和带引导件。 加压构件与定影带压力接触以形成定影辊隙。 励磁线圈设置在定影带的外径侧，并且被配置为产生磁通量以感应加热定影带。 皮带导向器从内径侧支撑定影带。 带引导件包括与定影带的内周面接触的接触部和不与定影带的内周面接触的非接触部。 构造成阻挡通过定影带的磁通的磁通阻挡构件设置在定影带和非接触部之间。