Canon Kabushiki Kaisha

Akebono Brake Industry Co., Ltd.

Hiroo Kobayashi

Minoru Sato

Yoshio Ito

Tadashi Yagi

Shigeo Miyabe

Koichi Miyamoto

Tadayuki Kitajima

Kazuyoshi Odagawa

Hiroaki Miyake

Kazuo Shishido

Koji Miura

Katuhiko Yamada

Shinichi Sasaki

Tsutomu Nishiuwatoko

Yoshiya Nomura

Akira Higeta

Hironobu Isobe

Tsuyoshi Waragai

Yoshiro Tsuchiya

Yoshikuni Tohyama

Takamasa Sawada

Toshifumi Moritani

Hiroshi Yukimachi

Toshifumi Maehara

Yasuyoshi Hayakawa

Masahiko Yashiro

Yukio Iwata

Takahiro Azeta

Hitoshi Fujino

Masahito Ohtsuka

Toru Takahashi

Atsushi Numagami

Toshiyuki Karakama

Kaoru Sato

Isao Ikemoto

Takashi Saito

Junichi Kimizuka

Atsushi Kubota

Hiroyuki Ishii

Nobukazu Adachi

Takayuki Ishihara

Tomoyuki Araki

Masao Ando

Takeshi Setoriyama

Toshihiko Inuyama

Akihisa Kusano

Satoshi Kurihara

Shinji Goto

Kazuhiko Okazawa

Masao Yoshikawa

Yasuo Fujiwara

Makoto Abe

Seiya Odaka

Toshiyuki Ito

Otoya Kosugiyama

Tatuya Kobayashi

Osamu Ohuchi

Haruo Tsuzuku

Tuyoshi Waragai

Masahito Otsuka

Takahiro Azeda

Takao Yokomizo

Atsushi Matsuoka

Yoshikuni Mohvama

A drum brake device produces a stable braking force at a predetermined boosting ratio in response to a brake operation force input thereto, even if the friction characteristics of the interface of the brake drum and the brake shoe varies, without increasing the size of the wheel cylinder. The drum brake device includes an input detector that detects a hydraulic braking pressure output from a master cylinder, and produces a signal representative of the detected hydraulic braking pressure as an input force to the drum brake device; an output detector that detects an anchor reaction force generated at the time of braking and produces a signal representative of the detected anchor reaction force as an output force of the drum brake device; electromagnetic valves capable of controlling the supply of a hydraulic braking pressure supplied from the master cylinder to a wheel cylinder; and a control circuit that controls the operations of the electromagnetic valves in accordance with output signals of the input detector and the output detector so that the output force is limited to a force equal to or smaller than a force defined by a predetermined boosting ratio.

Drum brake device

A process cartridge including an electrophotographic photosensitive member, a process unit for operating on the electrophotographic photosensitive member, a plurality of engaging members provided at a first frame, and a plurality of engaging members provided at a second frame. The first frame and the second frame are connected by connecting respective engaging members selected from the plurality of engaging members provided at the first frame and engaging members selected from the plurality of engaging members provided at the second frame. The process cartridge is detachably mountable in an electrophotographic image forming apparatus.

Toner cartridge, process cartridge, and electrophotographic image

Disclosed is a drum brake device in which during a service brake application, a pair of brake shoes operates in a leading/trailing mode, and during a parking brake application, a parking brake mechanism operates to cause the brake shoes to operate in the duo servo mode. A first lever, an equalizer and a second lever, which make up the parking brake mechanism, are all assembled onto one of the brake shoes. The second lever includes an input portion, a lever contact portion and an equalizer contact portion. The input portion receives a force from a parking lever. The lever contact portion applies a turning force to the first lever. The equalizer contact portion applies a turning force to the equalizer. The second lever, when it is turned, turns the first lever and then the equalizer.

Drum brake device having leading/trailing mode and duo servo mode

The present invention provides a method for recycling a process cartridge removably mountable to an image forming apparatus, comprising the steps of: (a) dividing a process cartridge into a first frame including an image bearing member, and a second frame including a developing means and a developer containing means for containing developer used by the developing means and having an opening through which the developer is supplied to the developing means; (b) thereafter, removing the developing means from the second frame; (c) thereafter, replenishing developer to the developer containing means through the opening; (d) thereafter, removably attaching a seal for closing the opening to the opening; and (e) thereafter, locking the first and second frames to each other, thereby assembling the process cartridge.

Recycle method for process cartridge and image forming apparatus

A process cartridge remanufacturing method for a process cartridge detachably mountable to a main assembly of an image forming apparatus includes the steps of providing a new photosensitive drum; providing a new toner-development frame including a new toner frame having a toner containing portion for containing toner, a new development frame having a roller mounting portion for mounting a developing roller for supplying toner to the photosensitive drum, wherein the toner frame and the development frame are welded with a new removable toner seal therebetween for preventing the toner in the toner containing portion from leaking out; preparing a drum frame to be reused having a drum mounting portion for mounting the photosensitive drum; supplying toner into the toner containing portion; mounting the developing roller to the new development frame; mounting the photosensitive drum to the drum frame to be reused; and rotatably engaging the new toner-development frame and the drum frame to be reused.

Process cartridge remanufacturing method and process cartridge

A developing apparatus for developing a latent image formed on an image bearing member includes a first frame having a developer container for containing a developer; a second frame having a developer carrying member for carrying the developer supplied from the developer container to supply the developer to the latent image; a sealing member for sealing an opening for supplying the developer from the developer container to the developer carrying member; wherein the sealing member is pulled between the first frame and the second frame along a pulling path in a pulling direction, whereby the opening is opened and projections, disposed at both sides of the pulling path downstream of the opening in the pulling direction, are provided for limiting the pulling direction of a sealing member.

Developing apparatus with a removable sealing film and process cartridge

The present invention provides a process cartridge mountable to an image forming apparatus. The cartridge includes an image bearing member, a processor for acting on the image bearing member, a driving force receiver provided at one end of the image bearing member, a protection member shiftable between a protection position to protect the image bearing member and a retract position, a first projection provided on the side of a toner containing portion, a guide member protruded in the direction perpendicular to the moving direction of the image bearing member, a second projection protruded in the moving direction of the image bearing member, and a third projection protruded from the protection member.

Process cartridge and image forming apparatus

A process cartridge detachably mountable to a main assembly of an image forming apparatus includes an electrophotographic photosensitive member; a process device actable on the photosensitive member; a toner container for containing toner for developing a latent image formed on the electrophotographic photosensitive member, the toner container having an opening for permitting supply of the toner to a developing portion therefrom; a sealing member for sealing the opening; and a seal mounting portion for permitting a sealing member a plurality of times.

Toner cartridge, process cartridge and electrophotographic image forming

An image forming apparatus is provided with a cylinder for carrying developing agent, and with a flange fitted into an end portion of the cylinder for supporting the cylinder. A fitting portion of the flange has a diameter larger than an inner diameter of the cylinder. The flange is mounted to the cylinder by press-fitting and has a guide smaller than the inner diameter of the cylinder at an end of the fitting portion for guiding the fitting. A spacer is located at a more central side of the cylinder than the fitting portion of the flange press-fitted into the cylinder.

Image forming apparatus and detachable process cartridge having

In order to prevent the eccentricity of a rotary shaft for rotatably supporting an image bearing member used with an image forming apparatus when the image bearing member is rotated, a projection is provided on an outer peripheral surface of the rotary shaft fitted into a fitting hole formed in a casing for securing the rotary shaft.

Image forming apparatus, process cartridge mountable within it and

A photosensitive drum mounting member includes a base member; a first conductive member projected from one side of the base member; a second conductive member, projected from the other side of the base member, and electrically connected with the first conductive member; a cylindrical member of plastic material on a surface of the second conductive member, the cylindrical member covering an inside part of the second conductive member from its end; and an extension from the base member.

Image bearing member mounting method

The present invention provides an image forming apparatus with a supply roller for supplying a sheet, a supply path for directing the sheet to an image forming section, a sheet ejecting path for the sheet on which an image is formed at the image forming section toward an ejecting section, a space integrally formed in a lower part of a body of the image forming apparatus, a branch path branched from the sheet ejecting path and adapted to direct the sheet toward the space, an introduction path for directing the sheet from the space to the supply path, and a sheet re-feeing unit removable with respect to the body of the image forming apparatus and including a sheet re-feeding path having an entrance facing the branch path and an exit facing the introduction path.

Image forming apparatus having re-feeding unit

An image forming system includes a sheet ejection open tray on which ejected sheets can be collected; and a sheet hold-down device including a sheet hold-down member pivotally mounted on the sheet ejection open tray via a support shaft for pivotal movement in a direction perpendicular to a surface of the sheet ejection open tray, and a hold-down member biasing device for biasing the sheet hold-down member away from the surface of the sheet ejection open tray in opposition to a weight of the sheet hold-down member itself and for maintaining a predetermined urging force of the sheet hold-down member so long as the sheet hold-down member is within a predetermined range of its pivotal movement.

Image forming system having sheet hold-down device

An image forming system having an image bearing member and a developer bearing member. Developer bearing member is biased toward the image bearing member by using the weight of a developing device. A tension spring for reducing an urging force of the developer bearing member against the image forming member is provided.

Image forming system and process cartridge removably mountable on same

Growing community of inventors

Yokohama, Japan

Hiroo Kobayashi