公开(公告)号：US11841655B2

公开(公告)日：2023-12-12

申请号：US17070750

申请日：2020-10-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kensuke Umeda ,  Masashi Tanaka ,  Shoichiro Ikegami ,  Sho Taguchi ,  Ai Suzuki ,  Hikaru Osada ,  Toru Imaizumi

IPC: G03G15/20 ,  H05B3/00 ,  G03G15/00 ,  G03G21/16

CPC classification number: G03G15/2053 ,  G03G15/2064 ,  G03G15/6555 ,  G03G21/1604 ,  H05B3/0095

Abstract: A fixing device includes a heating rotating member having a conductive layer and an exposed portion in which the conductive layer is partially exposed, and a roller including a metal core and an elastic portion, the roller forming a nip portion with the heating rotating member, the elastic portion being elastically deformed in a region where the nip portion is formed, wherein an annular conductive member provided in a longitudinal end portion of the metal core is in contact with the exposed portion of the heating rotating member while elastically deformed, and wherein in a state where the roller is not mounted to the fixing device, an outer diameter of the conductive member is smaller than an outer diameter of the elastic portion.

公开(公告)号：US11422497B2

公开(公告)日：2022-08-23

申请号：US17484480

申请日：2021-09-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ai Suzuki ,  Masashi Tanaka ,  Shoichiro Ikegami ,  Kensuke Umeda ,  Sho Taguchi

IPC: G03G15/00 ,  G03G15/041

Abstract: An image forming apparatus includes a photosensitive member; an exposure portion configured to expose the photosensitive member to light depending on image information to form a latent image on the photosensitive member; a developing portion configured to develop the latent image into a toner image with toner; and a transfer portion configured to transfer the toner image from the photosensitive member onto a recording material. The image forming apparatus changes a surface movement speed of the photosensitive member at timing prior to predetermined timing, when a moving speed of a recording material at the transfer portion changes, by a predetermined time.

公开(公告)号：US20220011710A1

公开(公告)日：2022-01-13

申请号：US17484480

申请日：2021-09-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ai Suzuki ,  Masashi Tanaka ,  Shoichiro lkegami ,  Kensuke Umeda ,  Sho Taguchi

IPC: G03G15/00

Abstract: An image forming apparatus includes a photosensitive member; an exposure portion configured to expose the photosensitive member to light depending on image information to form a latent image on the photosensitive member; a developing portion configured to develop the latent image into a toner image with toner; and a transfer portion configured to transfer the toner image from the photosensitive member onto a recording material. The image forming apparatus changes a surface movement speed of the photosensitive member at timing prior to predetermined timing, when a moving speed of a recording material at the transfer portion changes, by a predetermined time.

公开(公告)号：US20210373491A1

公开(公告)日：2021-12-02

申请号：US17325044

申请日：2021-05-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masashi Tanaka ,  Shingo Ito

IPC: G03G21/20 ,  G03G15/20

Abstract: An image forming apparatus for forming a toner image on a recording material includes a fixing unit and a blower unit to blow air around a roller. The fixing unit includes a tubular shape film, a heating member disposed in a space surrounded by the film, and the roller forming a nip portion with the heating member. The fixing unit heats and fixes the toner image onto the recording material at the nip portion. For printing that forms toner images on continuously conveyed recording materials where a roller surface temperature is lower than a predetermined temperature, fan stop and operation periods are set. During the fan stop period, the blower unit is stopped and an interval between preceding and subsequent recording materials is widened. During the fan operation period, the blower unit is in operation and the interval is narrower than the interval during the fan stop period.

公开(公告)号：US11150589B2

公开(公告)日：2021-10-19

申请号：US16815921

申请日：2020-03-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ai Suzuki ,  Masashi Tanaka ,  Shoichiro Ikegami ,  Kensuke Umeda ,  Sho Taguchi

IPC: G03G15/00 ,  G03G15/041

Abstract: An image forming apparatus includes a photosensitive member; an exposure portion configured to expose the photosensitive member to light depending on image information to form a latent image on the photosensitive member; a developing portion configured to develop the latent image into a toner image with toner; and a transfer portion configured to transfer the toner image from the photosensitive member onto a recording material. The image forming apparatus changes a surface movement speed of the photosensitive member at timing prior to predetermined timing, when a moving speed of a recording material at the transfer portion changes, by a predetermined time.

公开(公告)号：US20210026280A1

公开(公告)日：2021-01-28

申请号：US17070750

申请日：2020-10-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kensuke Umeda ,  Masashi Tanaka ,  Shoichiro Ikegami ,  Sho Taguchi ,  Ai Suzuki ,  Hikaru Osada ,  Toru Imaizumi

IPC: G03G15/20 ,  H05B3/00 ,  G03G15/00 ,  G03G21/16

Abstract: A fixing device includes a heating rotating member having a conductive layer and an exposed portion in which the conductive layer is partially exposed, and a roller including a metal core and an elastic portion, the roller forming a nip portion with the heating rotating member, the elastic portion being elastically deformed in a region where the nip portion is formed, wherein an annular conductive member provided in a longitudinal end portion of the metal core is in contact with the exposed portion of the heating rotating member while elastically deformed, and wherein in a state where the roller is not mounted to the fixing device, an outer diameter of the conductive member is smaller than an outer diameter of the elastic portion.

公开(公告)号：US20190332042A1

公开(公告)日：2019-10-31

申请号：US16388514

申请日：2019-04-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kohei Okayasu ,  Masashi Tanaka ,  Shingo Ito

IPC: G03G15/20

Abstract: An image forming apparatus includes an image forming unit configured to form an image based on image data, a fixing unit configured to fix the image formed by the image forming unit on a recording material, a conversion unit configured to convert image data into conversion data including a plurality of areas having a first resolution in a main scanning direction perpendicular to a conveyance direction of the recording material, and a second resolution higher than the first resolution in a sub-scanning direction, which is the conveyance direction of the recording material, an analysis unit configured to analyze values related to the areas of the plurality of areas of the conversion data obtained by the conversion unit, and a temperature control unit configured to control a fixing temperature of the fixing unit according to a result of the analysis performed by the analysis unit.

公开(公告)号：US09501012B2

公开(公告)日：2016-11-22

申请号：US14869622

申请日：2015-09-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kenichi Ogawa ,  Takashi Narahara ,  Toru Imaizumi ,  Yasuhito Minamishima ,  Tsuguhiro Yoshida ,  Masashi Tanaka ,  Kensuke Umeda

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G2215/2035

Abstract: A fixing apparatus for fixing a toner image to a recording material includes a cylindrical film, a heater configured to make contact with the film, the heater including a substrate and a heat generation resistor formed on the substrate, and a heat conduction member configured to make contact with a surface of the heater opposite to a surface thereof being in contact with the film, the heat conduction member having a higher thermal conductivity than that of the substrate, and being divided into parts in a generatrix direction of the film. The toner image formed on the recording material is fixed on the recording material by using heat of the film, and one of the parts of the heat conduction member is configured to make contact with the heater continuously from a center to an end of a heat generation region of the heater in the generatrix direction.

Abstract translation: 用于将调色剂图像定影到记录材料的定影装置包括圆柱形膜，被配置为与膜接触的加热器，加热器包括基板和形成在基板上的发热电阻器，以及导热部件， 与加热器的与膜接触的表面相对的表面接触，导热部件具有比基板更高的导热性，并且在膜的母线方向上被分割成部分。 在记录材料上形成的调色剂图像通过使用该薄膜的热而固定在记录材料上，并且导热部件的一个部分被构造成从发热体的中心到末端连续地与加热器接触 加热器在母线方向的区域。

公开(公告)号：US09002249B2

公开(公告)日：2015-04-07

申请号：US13855314

申请日：2013-04-02

Applicant: Canon Kabushiki Kaisha

Inventor： Eiji Uekawa ,  Tohru Saito ,  Atsutoshi Ando ,  Masashi Tanaka

IPC: G03G15/20

CPC classification number: G03G15/2064 ,  G03G15/2017 ,  G03G2215/2035

Abstract: The image heating apparatus includes an endless belt, a roller which contacts an outer face of the belt, and a nip portion forming unit which contacts an inner face of the belt, and forms a nip portion with the roller, for nipping and conveying a recording material. The nip portion forming unit includes a component which is longer than the belt in a generatrix direction of the belt. The apparatus also includes a regulation portion provided to oppose an end face of the belt, for regulating a shift movement of the belt to the generatrix direction of the belt. The regulation portion is integrally-molded with the component. As a result, damage of the end of the endless belt can be reduced.

Abstract translation: 图像加热装置包括环形带，接触带的外表面的辊和接触带的内表面的辊隙部形成单元，并与辊形成夹持部，用于夹持和传送记录 材料。 辊隙部分形成单元包括在带的母线方向上比带更长的部件。 该装置还包括设置成与带的端面相对的调节部分，用于调节带到带的母线方向的移动运动。 调节部与该部件一体成型。 结果，可以减少环形带的端部的损坏。

公开(公告)号：US12140899B2

公开(公告)日：2024-11-12

申请号：US17868420

申请日：2022-07-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ai Suzuki ,  Masashi Tanaka ,  Shoichiro Ikegami ,  Kensuke Umeda ,  Sho Taguchi

IPC: G03G15/00 ,  G03G15/041

Abstract: An image forming apparatus includes a photosensitive member; an exposure portion configured to expose the photosensitive member to light depending on image information to form a latent image on the photosensitive member; a developing portion configured to develop the latent image into a toner image with toner; and a transfer portion configured to transfer the toner image from the photosensitive member onto a recording material. The image forming apparatus changes a surface movement speed of the photosensitive member at timing prior to predetermined timing, when a moving speed of a recording material at the transfer portion changes, by a predetermined time.