Oki Data Corporation

Oki Electric Industry Co., Ltd.

Junichi Ushikubo

Tatsuhiko Shimomura

Masashi Fujii

Shun Hatanaka

Osamu Teramura

Yuuki Kobayashi

A development device may include: a development device body; a developer cartridge detachably attached to the development device body; first and second levers provided to the development device body, the first lever including an operation part and a first engagement portion and the second lever including a second engagement portion; first and second engaged portions provided to the developer cartridge, the first engaged portion being configured to form a first engagement with the first engagement portion and the second engaged portion being configured to form a second engagement with the second engagement portion; and a first biasing member biasing the first engagement portion to the first engaged portion. When the operation part is operated with a first pressing force, the first engagement is released, and when the operation part is operated with a second pressing force greater than the first pressing force, the first and second engagements are released.

Development device and image formation apparatus

An image forming apparatus includes: a main body to which a detachable part is attachable, the main body having an opening; a cover that opens and closes the opening of the main body; and an insertion member that, when the detachable part is not attached to the main body, is in an inserted position where the insertion member is inserted between the main body and the cover and prevents closing of the cover, and when the detachable part is attached to the main body, is in a retreat position where the insertion member is not inserted between the main body and the cover and allows closing of the cover.

Image forming apparatus and detachable part

Image drum cartridge

Toner cartridge

A developer container includes: a body in which a plurality of developer chambers that store developer are arranged, each developer chamber having an opening; and a plurality of covers that seal the openings of the plurality of developer chambers, the plurality of covers being separately provided to correspond to the openings of the plurality of developer chambers.

Developer container, image forming unit, and image forming apparatus

An image forming unit attachable and detachable with respect to an image forming apparatus includes a developer container in which a plurality of developer containing parts for containing respective developers are arranged on an arrangement line; and a detachable part that detachably supports the developer container wherein the developer container is mounted to the detachable part by sliding in mounting or detaching directions, wherein the detachable part has an engaging member that is rotatably supported, a downstream end part that is positioned at a downstream side of the developer container in the mounting direction. The downstream end part swings around the rotation shaft between a first position and a second position, the developer container has an engaged part that engages the downstream end part of the engaging member when the engaging member moves to the first position, and the downstream end part of the engaging member and the engaged part are engaged with each other and maintain a mounted state under which the developer container is mounted on the detachable part.

Image forming unit and developer container

A developer container holder for holding a developer container including a developer supply port and a shutter for opening and closing the developer supply port guides the developer container in a first direction when the developer container is attached to the developer container holder and in a second direction when the developer container is removed from the developer container holder, and includes: a holder that holds the developer container; a support that supports the holder slidably within a region in a direction in which the developer container is attached to and removed from the developer container holder; and an elastic member placed between the holder and the support to urge the holder in the first direction when the holder is on a first side of a position in the region and in the second direction when the holder is on a second side of the position in the region.

Developer container holder, developer container, and image forming apparatus

An image forming unit has a configuration in which, when an opening-closing member causes respective first openings to be opened by the engagement of the opening-closing member and an engaging section in association with an operation of attaching a developer container to an attachment unit, a first surface and a second surface are separated away from each other until arrival of the first openings at positions corresponding to respective second openings, and the first surface and the second surface are brought into proximity to each other upon the arrival of the first openings at the positions corresponding to the respective second openings.

Developer container attached detachably to attachment unit of image forming unit, image forming unit, and image forming apparatus

A developer collection container includes: a container body capable of containing collected developer; a developer conveyance member extending into the developer collection container and configured to convey the developer into the container body; and a guide provided in the container body and supporting the developer conveyance member from below the developer conveyance member.

Developer collection container and image formation apparatus

A cleaning device for an image forming apparatus includes a cleaning member that removes residual developer that remains on a image carrier, a rotary conveying member that conveys the removed residual developer toward a predetermined direction, and a housing that contains the rotary conveying member. The housing includes a support member that supports the cleaning member; and a protective member that has an inner wall which opposes outer periphery of the rotary conveying member and partially covers the rotary conveying member. The protective member is made of a resin molding material to which a filler is not added.

Cleaning device, image forming unit and image forming apparatus

A developer storage body includes a housing in which a developer is stored, a shutter portion mounted to the housing and having a hole portion through which the developer is replenished into the housing, and a cap portion covering the hole portion. The cap portion includes a structural portion that constitutes an enclosure body enclosing a hollow portion. The structural portion is formed of a first material. The cap portion further includes a seal portion that covers the structural portion to seal the hollow portion. The seal portion is formed of a second material having a lower flexural modulus than the first material.

Growing community of inventors

Tokyo, Japan

Junichi Ushikubo