Canon Kabushiki Kaisha

Daisuke Abe

Tadayuki Tsuda

Tomonori Mori

Yu Fukasawa

Noriyuki Komatsu

Masanari Morioka

Teruhiko Sasaki

Naoya Asanuma

Masaki Ojima

Tachio Kawai

Yukio Kubo

Hideyuki Matsubara

Toru Oguma

Kazuo Chadani

Akinobu Hirayama

Hideshi Kawaguchi

Toshiki Fujino

Kazutaka Sueshige

Shigeo Murayama

Ken Kikuchi

Takeo Kawanami

Tetsuya Numata

Mitsuhiro Sato

Hiroki Ogino

Kengo Sakai

Masahiro Suetsugu

Koji Wada

Masato Tanabe

Tsutomu Nishiuwatoko

Tetsuo Uesugi

Takashi Akutsu

Takahiro Sakamoto

Yuichi Sakakibara

Yoshiyuki Batori

Ryuta Murakami

Goshi Ozaki

Naoki Matsumaru

Daisuke Makiguchi

Tsuyoshi Ogawa

Takao Nakagawa

Junichiro Mizobe

Akira Suzuki

Shigeo Miyabe

Kazushi Watanabe

Akihiro Fujiwara

Hiroomi Matsuzaki

Tadashi Horikawa

Hideki Matsumoto

Shigemi Kamoshida

Jun Miyamoto

Junichi Matsumura

Hiroaki Nosho

Sachiyori Shiina

Takuro Kanno

A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.

Cartridge and image forming apparatus

A cartridge includes a photosensitive drum and a casing having a first end portion and a second end portion opposite to the first end portion in a direction of the rotational axis of the photosensitive drum. A coupling is positioned adjacent to the first end portion of the casing, with the coupling being operatively connected to the photosensitive drum so as to transmit a driving force toward the photosensitive drum. The coupling includes a main body configured to rotate about a rotational axis of the main body to thereby transmit the driving force and at least one engaging member, with the engaging member being pivotable relative to the main body between a first position and a second position about a pivot axis that is non parallel to the rotational axis of the main body, and with the engaging member being configured to transmit the driving force toward the photosensitive drum via the main body.

Cartridge, drum unit and image forming apparatus

An image forming apparatus includes: a main body; a developing cartridge having a housing, a memory medium, a memory medium unit, a developer carrier, and a protrusion portion in the longitudinal direction of the developer carrier; and a tray having a frame, an image bearing member, a guide member provided at one end in the longitudinal direction, an electric contact portion with the memory medium, and a memory unit support portion. The guide member includes a portion which functions as a memory unit support portion, and a downstream portion located downstream of the memory unit support portion in the mounting direction of the developing cartridge. The memory unit support portion guides the protrusion portion to the downstream portion when the developing cartridge is mounted on the frame.

Image forming apparatus and developing cartridge

A cartridge includes a photosensitive drum, the movable member movable relative to the photosensitive drum to control an inclination angle of a drive transmission member. The movable member is movable between a first position for reducing an inclination angle of the drive transmission member relative to the photosensitive drum and a second position retracted from the first position. By this, driving connection can be smoothly carried out.

A movable member includes a frame, a mounting portion, a rotatable image bearing member, a charging member, and a cleaning member. The cleaning member includes a base portion including a first surface positioned on one side of the frame, a second surface positioned on the other side of the frame, and a third surface, and includes a projected portion. The projected portion includes a first side surface positioned on the aforementioned the other side and a second side surface positioned on the aforementioned one side. The first side surface is positioned between the first surface and the second surface. The first side surface constitutes an end surface of the projected portion on the aforementioned the other side with respect to the axial direction, and the second side surface constitutes an end surface of the projected portion on the aforementioned one side with respect to the axial direction.

Movable member and image forming apparatus

A cartridge includes a gear member including a gear portion on an outer peripheral surface of the gear member, a rotational axis, and at least one engaging recess, the gear member being operatively connected to a rotatable member, and a coupling member provided with (i) at least one protrusion that is capable of receiving a driving force and (ii) at least one engaging projection that is engageable with the at least one engaging recess of the gear member. The coupling member is movable relative to the gear member in the direction of the rotational axis of the gear member between a first position and a second position. The gear member is not engageable with the engaging projection of the coupling member when the coupling member is in the second position, and the engaging recess of the gear member is engageable with the engaging projection of the coupling member and the gear member receives a driving force from the coupling member when the coupling member is in the first position.

Drum unit, cartridge, process cartridge and electrophotographic image forming apparatus having a movable coupling member

An image forming apparatus includes an apparatus body including a main contact, and a main guide, and a cartridge including a memory contact, a moving unit moving into and out of the apparatus body in a first direction and including a frame to which the cartridge is attached, first and second protrusions protruding in a second direction orthogonal to the first direction from the end surface of the frame, an intermediate contact being in electrical contact with the memory contact, an unit contact being in electrical contact with the main contact, and a line conductor, the first protrusion being supported by the main guide of the apparatus body, the second protrusion being located above the first protrusion. At least part of the line conductor connecting the intermediate contact and the unit contact is located in a recess formed by the first protrusion, the second protrusion, and the end surface.

Image forming apparatus with detectable cartridge

An image forming apparatus includes a main body having a first metal terminal, a plurality of toner cartridges to store toner and including a housing storing the toner, a supporting member provided at one end, and a memory medium including a chip for recording information about the toner cartridge and an electrical contact and being supported by the supporting member, and a tray movable between a housed position and a drawn-out position. The tray includes a frame which can mount the plurality of toner cartridges, a plurality of tray-side electrical contacts provided at the frame and able to contact the electrical contact of the memory medium of the plurality of toner cartridges respectively, and a second metal terminal electrically connected to the plurality of tray-side electrical contacts and able to contact the first metal terminal.

A process cartridge includes a photosensitive member unit with a photosensitive drum, a developing unit detachably mounted on the photosensitive member, and a toner cartridge detachably mounted on the developing unit. The toner cartridge has a holder including a protruding portion on an end side thereof, and the developing unit is provided with a rotatable lift member on an end side thereof. In a mounted state in which the toner cartridge is mounted on the developing unit, the toner cartridge is maintained in the mounted state by engaging of a first portion of the lift member with the protruding portion, and the toner cartridge is transited from the mounted state to a lifted state in which the toner cartridge is rotated upward by contacting of a second portion of the lift member to the protruding portion with rotation of the lift member.

Developer accommodating device, developing device, cartridge and image forming apparatus

A toner cartridge includes a casing accommodating toner and provided with a toner discharge opening, a fan, a closing member capable of shifting between a closed position and an open position for opening a passage. The toner cartridge also includes a drive receiving member for receiving a driving force from outside of the toner cartridge and for transmitting the driving force toward the fan and the closing member by rotation thereof. The closing member periodically moves between the closed position and the open position by receiving the driving force.

Toner cartridge and image forming apparatus

To provide a process cartridge, a drum unit capable of receiving a driving force from the main assembly, and an image forming apparatus including the process cartridge. A cartridge is provided with a movable member having a driving force receiving portion. The movable member moves between an advanced position and a retracted position.

A process cartridge includes a first unit including an image bearing member configured to carry an electrostatic latent image, and a second unit including a developer bearing member configured to develop the electrostatic latent image carried on the image bearing member into a toner image, the second unit being capable of being mounted on the first unit in a mounting direction. The first unit includes a moving member that moves the second unit mounted on the first unit at a mounting position to a detachment position. The second unit includes a storage unit that stores information about the second unit. The moving member is disposed on a first side of the process cartridge in a longitudinal direction of the image bearing member. An electrode of the storage unit is disposed on a second side of the process cartridge in the longitudinal direction.

Process cartridge and image forming apparatus

A cartridge includes a photosensitive drum and a casing rotatably supporting the photosensitive drum. A coupling is operatively connected to the photosensitive drum so as to be capable of transmitting a driving force toward the photosensitive drum. The coupling includes a main body, a movable portion movable relative to the main body of the coupling between a first position and a second position, and a projection configured to move in a circumferential direction of the coupling relative to the main body of the coupling in response to movement of the movable portion from the first position to the second position.

A cartridge includes a photosensitive drum and a coupling operatively connected to the photosensitive drum so as to be capable of transmitting a driving force toward the photosensitive drum. The coupling includes a first wall, a second wall provided inside the first wall in a radial direction of the coupling, a groove portion defined by the first wall and the second wall, a recessed portion provided in the second wall, and an inclined portion adjacent to the recessed portion.

Growing community of inventors

Suntou-gun, Japan

Daisuke Abe