Canon Kabushiki Kaisha

Kojiro Yasui

Hiroomi Matsuzaki

Tatsuo Fujisaki

Masaaki Matsushita

Tetsuo Uesugi

Masaki Furutani

Koji Yamaguchi

Junichi Matsumura

Kazuki Matsumoto

Hiroki Ogino

Yasufumi Yoshino

Masatomi Yoshida

Tachio Kawai

Tomonori Matsunaga

Susumu Nittani

Tadashi Horikawa

Seiichi Shinohara

Tatsuya Suzuki

Hiroshi Takarada

Akinobu Hirayama

Hironobu Isobe

Sadaaki Tani

Syuhei Kawasaki

Hiroshi Sato

Tomonori Mori

Kazuhiko Kanno

Hideki Maeshima

Yosuke Kashiide

Koji Wada

Kanji Yokomori

Takeshi Arimitsu

Jun Miyamoto

Takayuki Kanazawa

Seiji Hara

Kouji Hashimoto

Takashi Kase

Koji Miura

Kinya Harada

Yusuke Usui

Provided is an image forming apparatus, having: a power source; a first coupling member configured to be rotated by a driving force transferred from the power source; and a cartridge including a second coupling member configured to rotate in a state of being adsorbed to the first coupling member, and a rotating member connected with the second coupling member, wherein the first coupling member has a first driving force transfer surface which is perpendicular to a rotation axis of the first coupling member, the second coupling member has a second driving force transfer surface which is perpendicular to a rotation axis of the second coupling member, and the driving force is transferred from the first coupling member to the second coupling member in a state where an adsorption force is generated mutually between the first driving force transfer surface and the second driving force transfer surface.

Image forming apparatus and cartridge with a coupling member that contacts another coupling member by an electrostatic adsorption force

A developer accommodating unit includes a developer container provided with an opening at a lower portion thereof with respect to a direction of gravitation in an attitude during use and configured to accommodate a developer; a developer carrying member mounted at the opening and configured to carry the developer; and a feeding member provided in the developer container and configured to feed the developer in the developer container toward the developer carrying member. The feeding member is swingable about a predetermined supporting point as a swing center and is configured so that maximum acceleration when the feeding member moves toward the developer carrying member is smaller than maximum acceleration when the feeding member moves away from the developer carrying member.

Developer accommodating unit, cartridge and image forming apparatus

A developer accommodating unit for accommodating a developer for image formation includes a flexible container provided with an openingfor permitting discharge of the developer, a frame for accommodating the flexible container and for accommodating the developer to be discharged from the flexible container, and an urging memberfor urging a developer accommodating bag toward the frame for accommodating the developer accommodating bag. By this, it is possible to satisfactorily effect discharge of the developer from the flexible developer accommodating bag

Developer accommodating unit, process cartridge and electrophotographic image forming apparatus

A fixing portionfor suppressing movement of a developer bagwhen the developer bagis unsealed by moving a sealing memberis provided. By this, unsealing becomes easy.

Developer accommodating container, developer accommodating unit, process cartridge, electrophotographic image forming apparatus

Developer accommodating container, developer accommodating unit, process cartridge, and electrophotographic image forming apparatus

A powder feeding mechanism includes: a feeding member, provided under powder, for feeding the powder; and a vibration applying member for applying reciprocating acceleration to the feeding member in a feeding surface direction along a powder feeding surface of the feeding member. Maximum acceleration applied from the vibration applying member to the feeding member in a powder feeding direction is smaller than maximum acceleration applied from the vibration applying member to the feeding member in a direction opposite to the powder feeding direction to feed the powder in the powder feeding direction by the feeding member.

Powder feeding mechanism, powder feeding method, developer accommodating container, cartridge and image forming apparatus

A developer accommodating unit for accommodating a developer for image formation. A flexible container includes a developer accommodating portion for accommodating the developer and an opening for permitting discharge of the developer. The flexible container also includes a superposed multi layer sheet structure portion for forming the developer accommodating portion. A sealing member seals the opening and an unsealing member moves the sealing member to unseal the opening. A frame that accommodates the flexible container, the sealing member, and the unsealing member includes a fixing portion for fixing the flexible container. A fixed portion fixed to the fixing portion is provided at the superposed multi layer sheet structure portion of the flexible container, and an interlayer bonding portion between the superposed layers is provided between the fixed portion of the multi layer sheet structure portion and the developer accommodating portion.

Developer accommodating unit, process cartridge, and electrophotographic image forming apparatus

A developer accommodating container for accommodating a developer for image formation, includes a first flexible member having a three-dimensional shape; a second flexible member for forming a space for accommodating the developer by covering a part of the first flexible member; wherein the developer accommodating container is constituted by bonding the first flexible member and the second flexible member to each other, and an injection opening, provided between the first flexible member and the second flexible member, for permitting injection of the developer into the developer accommodating container. An adjacent side, which is one of sides constituting an outer configuration of the three-dimensional shape and which is adjacent to the injection opening, has an angle of less than 90 degrees with respect to an injection direction of the developer at the injection opening.

Developer accommodating container, process cartridge and image forming apparatus

A developer container configured to contain developer to be used for image formation, includes a first electrode provided in the developer container, a second electrode provided opposing to the first electrode configured to detect an electrostatic capacitance between the first electrode and the second electrode, to detect a quantity of the developer, a conveyance member provided between the first electrode and the second electrode and on a bottom surface side inside the developer container, and configured to convey the developer contained in the developer container, and a vibration imparting member configured to impart vibration to the conveyance member, wherein the developer on a developer conveyance surface of the conveyance member contacting the developer is conveyed by the vibration of the conveyance member.

Developer container, cartridge, and image forming apparatus

A developing unit includes: a frame; a flexible container, provided inside the frame, for accommodating a developer, wherein the flexible container includes an opening for permitting discharge of the developer; an urging member, provided inside the frame, for urging the flexible container to deform the flexible container; and a developer carrying member for carrying the developer discharged from the opening of the flexible container. The flexible container includes a projected portion projecting toward an outside of the flexible container. The projected portion is moved depending on deformation of the flexible container, by urging of the flexible container, to stir the developer discharged from the opening.

Developing unit, process cartridge and image forming apparatus

A developer accommodating unit for accommodating a developer includes: a flexible container provided with a plurality of openings for permitting discharge of developer. The openings are formed and arranged in a longitudinal direction of the developer accommodating unit. The openings have opening areas such that with respect to the longitudinal direction, the opening area of the opening provided at an end portion is larger than the opening area of the opening provided at a central portion.

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

Growing community of inventors

Numazu, Japan

Kojiro Yasui