Canon Kabushiki Kaisha

Terutaka Endo

Hideki Ohta

Seiji Obata

Takayuki Mizuta

Jiro Moriya

Daisuke Yamamoto

Hiroki Yamaguchi

Tachio Kawai

Koji Wada

Takehiko Suzuki

Hideo Nanataki

Michio Uchida

Masahiko Suzumi

Toshihiko Ochiai

Akimichi Suzuki

Noritomo Yamaguchi

Shoichiro Ikegami

Kenji Takagi

Masahito Omata

Takeshi Niimura

Hisayuki Tomura

Atsushi Murakami

Keisuke Mitsuhashi

Shota Kase

The present invention provides a fixing device including a flexible cylindrical rotary member and an inner-surface opposing portion that opposes an inner surface of the rotary member at an end portion of the rotary member in a generatrix direction. The inner-surface opposing portion moves upstream in a recording material conveying direction in accordance with lateral shift of the rotary member in the generatrix direction. This restricts the lateral shift of the rotary member.

Fixing device for suppressing reduced durability of a flexible rotary member

A first rotating member a heating recording medium, a second rotating member forming a nip portion with the first rotating member, a holding member disposed downstream of the nip portion in a conveying direction and holds a conveying member conveying the recording medium, and a guide member facing the conveying member, the fixing apparatus is not exposed to an outside when opening/closing member is in a closed state, the fixing apparatus is exposed to the outside when the opening/closing member is in an opened state. A distance between the holding member being in the closed state and at a first position and the guide member is a first distance. A distance between the holding member being in the opened state and at a second position and the guide member is a second distance, and the second distance is shorter than the first distance.

Fixing apparatus and image forming apparatus

An image forming apparatus includes an image forming unit, a discharge unit, a double-sided conveyance path, a sheet plate, a skew correction unit, and a frame. The discharge unit discharges a sheet having an image from the image forming unit. The double-sided conveyance path conveys the sheet again to the image forming unit. The sheet plate restricts a position of an end, in a sheet width direction, of the sheet. The skew correction unit obliquely conveys the sheet to abut the sheet end. The frame determines a position of the sheet plate and includes a first positioning portion to position a sheet plate first positioned portion and a second positioning portion to position a sheet plate second positioned portion with the skew correction unit between the first and second positioned portion. The first positioning portion faces the first positioned portion and the second positioning portion faces the second positioned portion.

Image forming apparatus

A cartridge detachably attachable to a main body of an image forming apparatus, the main body including: a fixing portion that includes a heating rotation member; and a mounting portion on which the cartridge is mounted, the fixing portion including a fixing shutter movable between a first position where a part of the heating rotation member is covered and a second position where the part of the heating rotation member is exposed, the fixing shutter including a force receiving portion that receives a force for causing the fixing shutter to move from the first position to the second position, the cartridge including a photosensitive member, a frame that supports the photosensitive member, and a pressing portion that presses the force receiving portion of the fixing shutter while the cartridge is being mounted on the mounting portion.

Image forming apparatus and cartridge mountable on the same

An image forming apparatus for forming an image on a sheet, includes an image forming unit configured to form the image on the sheet, a double-sided conveyance path through which the sheet with the image formed on a first surface passes before the image forming unit forms an image on a second surface opposite to the first surface, a guide member having a contact portion configured to contact one end of the sheet in the width direction of the sheet, the guide member being provided on the double-sided conveyance path, and a reversing roller pair forwardly and reversely rotatable, configured to convey the sheet to the double-sided conveyance path during a reverse rotation, the reversing roller pair having a drive shaft, and a first roller and a second roller coaxially disposed on the shaft, rotatable with the shaft, wherein the second roller is disposed at a position more away from the contact portion than the first roller in the axial direction of the shaft, the second roller having a larger outer diameter than the first roller.

An image forming apparatus includes an image forming unit configured to form an image on a sheet, a duplex conveyance path through which the sheet having the image formed by the image forming unit on a first side passes when an image is formed on a second side that is a back side of the first side, a guiding member provided along the duplex conveyance path, a reversing roller pair capable of rotating in a forward direction and in a reverse direction, h, and a conveyance roller pair provided on the duplex conveyance path, wherein at least one of the reversing roller pair is inclined to the width direction so that, in the width direction, the side end of the sheet being conveyed by the reversing roller pair rotating in the reverse direction moves closer to the contact portion.

Growing community of inventors

Kawasaki, Japan

Terutaka Endo