Canon Kabushiki Kaisha

Toru Imaizumi

Takashi Narahara

Yasuhito Minamishima

Hikaru Osada

Kazuhiro Doda

Atsutoshi Ando

Kenichi Ogawa

Masashi Tanaka

Kensuke Umeda

Kohei Wakatsu

Tomoya Tateishi

Masafumi Maeda

Takeshi Shinji

Takaaki Akamatsu

Shoichiro Ikegami

Tsuguhiro Yoshida

Sho Taguchi

Takanori Watanabe

Ken Nakagawa

Ai Suzuki

Takanori Mitani

Masahiko Suzumi

Kazuaki Takahata

Noriaki Sato

Mahito Yoshioka

Hiroki Yamaguchi

Munehito Kurata

Daizo Fukuzawa

Hiromitsu Kumada

Masaru Ohno

Koji An

Nozomu Nakajima

Kuniaki Kasuga

Atsunobu Mori

Toshifumi Kitamura

Satoru Koyama

Yoshimichi Ikeda

Yuki Oshima

Koji Yasui

Yosuke Naito

A fixing apparatus includes a film, a guide member, a stay member, a roller, and a restriction structure. The guide member is disposed in an inside space of the film, elongated in a generatrix direction of the film, and guides rotation of the film. The stay member reinforces the guide member, the film and a roller form a fixing nip portion between the film and the roller, and a recording medium having a toner image is heated to fix the toner image at the fixing nip portion while a sheet passes through the fixing nip portion. The roller is disposed in contact with an outside surface of the film. The restriction structure restricts movement of the guide member in a direction orthogonal to the generatrix direction of the film and also in a direction in which the stay member and the guide member are separated from each other.

Fixing apparatus and film unit

A fixing device includes a fixing film, a heater for heating the fixing film, a heater holder including a heater holding portion holding the heater, and a pressing roller forming a nip between itself and the fixing film to be heated by the heater. In the nip, a toner image carried on a recording material is fixed. The heater holder includes an opposing surface which is provided on a side upstream of the heater holding portion with respect to a recording material feeding direction and which opposes the pressing roller, a lubricant holding portion provided on the opposing surface, for supplying a lubricant to between the fixing film and the heater, and a projected portion provided on the side upstream of the heater holding portion with respect to the recording material feeding direction and projecting toward the pressing roller from the opposing surface.

Fixing device and image forming apparatus

In a fixing device according to the disclosure, a first surface of a restriction member is inclined so that, as the first surface goes further away from a nip portion, the first surface inclines toward a direction coming closer to an edge surface of the film, and the first surface is inclined so that, as the first surface comes downstream in the conveying direction, the first surface inclines toward a direction going further away from the edge surface of the film. A second surface is inclined so that, as the second surface comes closer to a center in the rotational axis direction of the film, the second surface inclines toward a direction coming closer to a roller, and inclines in a direction going downstream in the conveying direction.

Fixing device

A fixing device includes first and second rotation members, a heater holder having a protrusion, and a heater having a heating element and a substrate having a longitudinal direction and a thickness direction. The protrusion is disposed at a position, which is outside a nip portion and on a downstream side in a conveyance direction of a recording material, and comes into contact with the first rotation member. The protrusion protrudes in the thickness direction toward the second rotation member without crossing a nip tangent line that passes through a contact surface between the first rotation member and the second rotation member and extends parallel to the contact surface, and a length in the longitudinal direction of the protrusion is shorter than a length in the longitudinal direction of the recording material of a maximum size which is able to be conveyed.

An image heating device comprising: a first rotating member, a heater, a heater holder, and a second rotating member, wherein the heater holder has a flat surface portion provided downstream of the heater in a conveying direction of a recording material, the flat surface portion being in contact with the inner peripheral surface of the first rotating member, wherein the flat surface portion has a first region and a second region in a longitudinal direction, wherein the first region includes a region corresponding to a region of a nip portion through which a central portion of the recording material passes, and the second region is a region on an end portion side from the first region in the longitudinal direction, and wherein in the conveying direction, the downstream end portion of the second region is located upstream of the downstream end portion of the first region.

Image heating device and image forming apparatus

A fixing apparatus includes a first rotary member, a nip forming unit including a heater and a holder member, a second rotary member, and a support member. The holder member includes a first surface configured to support the heater and provided on the nip portion side of the holder member in an orthogonal direction orthogonal to both of a longitudinal direction and a short direction, a second surface provided on a side of the holder member opposite to the first surface in the orthogonal direction and configured to abut a first abutting portion of the support member and abut a second abutting portion of the support member, and a rib portion provided to project from the second surface and extend in the short direction throughout at least a range in the short direction where the first surface is provided.

Fixing apparatus with a detection element disposed in a hole portion of a heater holder member and image forming apparatus

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.

Image heating device

An image forming apparatus for forming an image on a recording material. The image forming apparatus includes an image forming portion, a fixing portion, an oblique movement detecting portion, and a controller. The image forming portion is configured to form the image on the recording material. The fixing portion includes a flexible cylindrical rotatable member and a roller in press contact with the rotatable member. The rotatable member and the roller are configured to form a fixing nip, in which the recording material, on which the image is formed, is nipped and fed. The oblique movement detecting portion is configured to detect oblique movement of the recording material. When the oblique movement detecting portion detects the oblique movement of the recording material, the controller increases a feeding interval of the recording material to the image forming portion.

Image forming apparatus that increases a sheet feeding interval when oblique sheet movement is detected

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Kawasaki, Japan

Toru Imaizumi