Canon Kabushiki Kaisha

Ken Murooka

Tomooku Koyama

Wataru Uchida

Yohei Suzuki

Jun Agata

Takeshi Niimura

Daisuke Takamura

Tatsuo Hamada

Nobukazu Adachi

Noriyoshi Ishikawa

Takeshi Kubota

Akira Kuroda

Yoshinori Sugiura

Yoshiro Tsuchiya

Takeshi Setoriyama

Takeshi Sugita

Jun Azuma

Akira Yuza

Chitose Tenpaku

Yoshiya Nomura

Satoru Izawa

Takahiro Uchiyama

Jun Asami

Yasuhiko Fuse

Taisuke Minagawa

Toshiya Kaino

Masatoshi Yoshida

Masayoshi Fukatsu

Shinya Noda

Mitsuhiro Ohta

Keisuke Fujita

Taro Ishifune

Ryo Iwasawa

Yasuzumi Taba

Takaaki Kawade

Hideki Miyazaki

Seiji Sagara

Masahide Hirai

Takashi Soya

Akira Hayakawa

Yasumasa Otsuka

Naoyuki Maeda

Atsushi Oguni

Kiyoshi Amano

An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material The guide member is moved when the guide member is pushed by the recording material.

Image forming apparatus

An image forming apparatus includes a fixing portion for fixing an image formed on a recording material, and a guide member for guiding the recording material, wherein the guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material. The fixing portion includes a cylindrical belt and a roller contacting an outer surface of the belt for forming a fixing nip through which the recording material is to be passed, wherein the roller has a shape such that a diameter thereof is increased with a distance thereof toward the end portion with respect to the direction perpendicular to the feeding direction, and the guide member is moved when the guide member is pushed by the recording material.

An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material. The guide member is moved when the guide member is pushed by the recording material.

Image forming apparatus with guide member movable with repect to direction perpendiclar to recording material surface

An image forming apparatus that forms a toner image on a recording medium includes an image forming unit that forms an unfixed toner image on a recording medium; a fixing unit that heats the recording medium bearing the unfixed toner image and fixes the unfixed toner image onto the recording medium at a nip portion; a heating member and a pressurizing member that touches the heating member and forms the nip portion therebetween; a first blower that blows air to a non-sheet-passing area of a small-size recording medium in the heating member; and a second blower that blows air to a non-sheet-passing area of a small-size recording medium in the pressurizing member. Upon the temperature of the non-sheet-passing area of the heating member exceeding a threshold temperature, the first blower blows without the second blower blowing, then the two blowers start blowing together.

Fixing device having a perforated duct

An image forming apparatus that forms a toner image on a recording medium includes an image forming unit that forms an unfixed toner image on a recording medium; a fixing unit that heats the recording medium bearing the unfixed toner image and fixes the unfixed toner image onto the recording medium at a nip portion; a heating member and a pressurizing member that touches the heating member and forms the nip portion therebetween; a blower having a fan and duct, that blows air to a non-sheet-passing area of a small-size recording medium in the heating member; wherein the duct includes a second opening through which airflow from the fan is directed to the conveyance roller pair, and wherein the second opening of the duct is configured not to overlap with the non-sheet-passing area of the heating member in a longitudinal direction of the heating member.

Image forming apparatus having fixing device and blower for the fixing device

Image forming apparatus with plurality of ribs on guide to fixing nip

An image forming apparatus has a fixing unit including a first fixing member and a second fixing member opposing to the first fixing member, a curl correcting unit including a first curl correcting member and a second curl correcting member opposing to the first curl correcting member, a first changing member rotatable about a first rotation center, the first changing member changing a pressure to the sheet by the first fixing member and the second fixing member, and a second changing member rotatable about the first rotation center, the second changing member changing a pressure to the sheet by the first curl correcting member and the second curl correcting member.

Image forming apparatus with curl correcting unit

An image forming apparatus has an image forming portion, a fixing portion for fixing the unfixed image at a fixing nip, a first and second guide members configured to guide the recording material to the fixing nip. The first guide member is provided at a position opposed to a surface of the recording material on which the unfixed image is formed and at a center of the fixing portion with respect to a longitudinal direction of the fixing portion, and the second guide member is provided at a position opposed to the surface of the recording material on which the unfixed image is formed and at an end of the fixing portion with respect to the longitudinal direction of the fixing portion, the second guide member being movable relative to the first guide member with respect to a direction perpendicular to a feeding direction of the recoding material.

A curl correction apparatus that corrects a curl of a sheet includes: a hard roller that is disposed in the downstream in a sheet conveying direction of a heating apparatus; a soft roller that is disposed in the downstream in the sheet conveying direction of the heating apparatus; and a guide member that is disposed in the immediate upstream in the sheet conveying direction with respect to the hard roller, and guides the sheet; wherein a nip width in the sheet conveying direction of a nip portion between the hard roller and the soft roller is set to be narrower in a central portion in an axial direction than end portions in the axial direction, and the guide member is configured to protrude in the central portion in the axial direction toward the downstream in the sheet conveying direction from the both end portions in the axial direction.

Curl correction apparatus, sheet conveying apparatus, and image forming apparatus

Image forming apparatus with lower and upper guide members

An image forming apparatus includes a main assembly; a fixing unit including a fixing rotatable member for fixing an unfixed image formed on a recording material, and a frame for accommodating the fixing rotatable member, the fixing unit is detachably mountable to the main assembly; and an air feeding member for feeding air to the fixing rotatable member provided in the main assembly, wherein the frame is provided with an opening for applying the air fed from the air feeding member to the fixing rotatable member, and an openable member movable between a first position for closing the opening and a second position for opening the opening, wherein the openable member moves from the second position to the first position in response to an operation of taking the fixing unit out of the main assembly.

Fixing apparatus, and image forming apparatus equipped with fixing apparatus

A representative configuration of an image forming apparatus according to the invention includes: an image forming portion; a transfer portion; a fixing portion; a curl correcting unit which is provided on a downstream of the fixing portion in a sheet conveyance direction and includes a first roller and a second roller; a holding portion which movably holds the second roller; a biasing member which applies a force to the holding portion; a door which rotatably holds the first roller, is supported to be opened and closed, and separates the first roller from the second roller by being opened; and a retracting portion which allows the holding portion to be retracted to a position where the second roller deviates from a movement path of the door against a biasing force of the biasing member according to a closing operation of the door.

Image forming apparatus with a curl correcting unit

Growing community of inventors

Mishima, Japan

Ken Murooka