Canon Kabushiki Kaisha

Shouhei Takeda

Koji Takematsu

Naoyuki Yamamoto

Yasuo Nami

Shinichiro Wakahara

Kazuaki Aoki

Masahiro Nawa

Jiro Shirakata

Koki Watanabe

Koichiro Nishimura

Tetsuro Fukusaka

Katsuhiro Ishido

Kazunori Togashi

Yuichi Makino

Takashi Soya

Masafumi Kamei

Jiro Futagawa

An image heating apparatus includes a hollow image heating roller having a through hole at one axial end portion side thereof; a bearing fitted around the roller; a heat insulating bush fitted around the roller between the roller and the bearing; a retaining ring for preventing the heat insulating bush from moving relative to the roller; an annular spacer provided between the heat insulating bush and the retaining ring, the annular spacer being provided with an inwardly protruded key portion engageable with the through hole.

Image heating apparatus and recording material feeding apparatus

An image heater a hollow heating roller having a hole at an axial end portion thereof; a bearing supporting the heating roller; a heat insulating bush fitted between an outer surface of the heating roller and the bearing; a retaining ring for retaining the heat insulating bush in an axial direction of the heating roller, the retaining ring including a projection engaging with the hole; an annular spacer provided between the retaining ring and the heat insulating bush, wherein the spacer includes a connecting portion having a connecting hole, the retaining ring includes a hooking portion engaging with the connecting hole.

Image heating apparatus

An image heating apparatus includes a roller, a heating portion disposed within the roller, a bearing portion fitted around an end portion of the roller to rotably support the roller, and a retaining ring attached at an axially predetermined position of the roller to restrict the roller from moving in a axial direction of the roller with respect to the bearing portion. The retaining ring includes first and second projections fitted into a hole portion of the roller. Profiles of side surfaces of these first and second projections abutting edges of the hole portion in a circumferential direction are recessed in the circumferential direction.

Image heating apparatus, bearing mounting structure and retaining ring

An image reading apparatus reads an image from a document being simultaneously fed by the apparatus. A document feeder unit feeds the document on a original plate. A first image reading unit reads an image from the fed document at a first document-read position on the original plate. A second image reading unit reads an image from the fed document at a second document-read position located at a predetermined distance from the first document-read position in a document feeding direction. An abnormal pixel detection unit detects abnormal pixels resulting from rubbish moved between the first document-read position and second document-read position on the original plate together with the document.

Image reading apparatus and method for controlling the same

An image heating member includes a first region having a Curie temperature higher than a preset temperature, and a second region having a Curie temperature lower than the Curie temperature of the first region. A width of the first region in a conveying direction of a recording material is equal to or larger than a width of the recording material of a maximum size to be fed. The second region is provided outside the first region.

Image heating device using induction heating system

In order to prevent non-sheet passing portion temperature rise occurred in a non-sheet passing area of an electromagnetic induction heating member, leakage of magnetic flux is reduced by setting a Curie temperature of the heating memberto be smaller than an acceptable upper limit temperature and setting a thickness of the heating member so that a thickness tk in a Curie temperature arrival area (P&#x2212;P) is larger than a thickness tn in a Curie temperature non-arrival area Pwhich is a conveyance area of a material to be heated having a minimum passing size.

Induction image heating apparatus

Growing community of inventors

Toride, Japan

Shouhei Takeda