Brother Kogyo Kabushiki-kaisha

Kabushiki Kaisha Toshiba

Takashi Arakawa

Shougo Sato

Yasumasa Fujii

Junichi Hashimoto

Norio Uchida

Hiroshi Nakano

Kazuhiro Inoue

Teruo Takeuchi

Tetsuya Morita

Yoshio Noguchi

Mariko Uchida

Hiroyuki Motegi

Toshihiro Kuroki

Kinya Sakaki

Hidenori Egoshi

Kazuya Taira

Masahiro Ogushi

Yukiko Kitamura

Kazushi Suzuki

Yuki Akamatsu

Toshihiro Komeya

A drum cartridge is configured to be detachably mounted on an apparatus main body in a state where a toner cartridge is mounted on the drum cartridge. A first shutter and a second shutter are configured such that: when the drum cartridge is mounted onto the apparatus main body in a state where the toner cartridge is mounted on the drum cartridge, the first shutter moves from a first closed position to a first open position and the second shutter moves from a second closed position to a second open position, and when the drum cartridge is detached from the apparatus main body in a state where the toner cartridge is mounted on the drum cartridge, the first shutter moves from the first open position to the first closed position and the second shutter moves from the second open position to the second closed position.

Image forming apparatus

A first detector detects a sheet between a first conveyance roller and a confluence position in a conveyance path. The first detector includes a first actuator and a first sensor. The first actuator is rotationally movable by contacting the sheet conveyed by the first conveyance roller. The first sensor is an optical sensor that detects rotational movement of the first actuator. A second detector detects the sheet between a second conveyance roller and the confluence position in a reconveyance path. The second detector includes a second actuator and a second sensor. The second actuator is rotationally movable by contacting the sheet conveyed by the second conveyance roller. The second sensor is an optical sensor that detects rotational movement of the second actuator. A single sensor board supports the first sensor and the second sensor. The sensor board has a wiring pattern connected to the first sensor and the second sensor.

Image forming apparatus including toner cartridge and drum cartridge

A sheet feeder includes a separation roller, a retard roller, and a return latch. The separation roller rotates in a forward direction to separate a sheet and transport the separated sheet in a sheet transport direction. The retard roller forms, together with the separation roller, a nip point and rotates in a reverse direction to return a sheet in a direction opposite to the sheet transport direction. The return latch moves from a retracted position to a protruding position to return a sheet remaining after separation by the separation roller to a position upstream of the nip point in the sheet transport direction. The return latch, when at the retracted position, is retracted from a sheet transport path and, when at the protruding position, protrudes to the sheet transport path.

Sheet feeder and image forming apparatus

Image forming apparatus including toner cartridge and drum carir 11 ge

A sheet conveyor includes a drive roller, a retard roller forming a nip with the drive roller, a first torque limiter disposed coaxially with the retard roller and communicating with the retard roller, a first gear disposed coaxially with the retard roller, a drive train including a plurality of gears for receiving a driving force from the first gear, a second torque limiter, and an arm member including a contact portion located downstream of the drive roller in the conveyance direction. The arm member is movable between a first arm position to allow transmission of the driving force to the second torque limiter and a second arm position to interrupt transmission of the driving force to the second torque limiter. The arm member is configured to, as the sheet conveyed by the drive roller contacts the contact portion, move from the first arm position to the second arm position.

Sheet conveyor and image forming apparatus

An image forming apparatus includes: a main body casing; a photosensitive drum; a support member; a belt unit; a transfer roller; and a second sheet guide. The support member is movable between a first accommodated position and a first withdrawn position. The belt unit is movable between a second accommodated position and a second withdrawn position. The belt unit includes: a first sheet guide; and a transfer belt. The belt unit is movable together with the support member. The second sheet guide is positioned below the belt unit and faces the first sheet guide to define a sheet conveying path between the first sheet guide and the second sheet guide in a state where the belt unit is at the second accommodated position. The second sheet guide is configured to convey a sheet along the sheet conveying path toward a position between the transfer belt and the transfer roller.

Image forming apparatus capable of moving belt unit together with support member

A light-emitting device includes a semiconductor light-emitting element, for example, a light emitting diode. A first metal member includes a first metal plate and a first metal layer between the semiconductor light-emitting element and a first surface of the first metal plate. An insulating layer contacts a second surface of the first metal plate. The second surface is in a second plane that intersects a first plane of the first surface.

Semiconductor light-emitting device and method for producing the same

An image forming apparatus including an apparatus main body including an inner wall that defines an accommodation portion, photoconductive drums arranged in parallel at intervals in a predetermined direction toward a first side from a second side, in the accommodation portion, chargers disposed corresponding to the photoconductive drums, respectively, each charger charging a corresponding one of the photoconductive drums, a frame body configured to support the photoconductive drums and the chargers and be accommodated in the accommodation portion, a regulating member disposed between the inner wall and a first-side end portion of the frame body in the predetermined direction, the regulating member configured to apply an urging force to the frame body and regulate an air current, and a pressing member configured to press the frame body against the urging force of the regulating member and regulate a movement of the frame body relative to the apparatus main body.

An image forming apparatus including a plurality of image forming units arranged in parallel with each other at intervals in a predetermined direction toward a first side from a second side of the image forming apparatus, each image forming unit including a photoconductive drum, and a charger configured to charge the photoconductive drum, a frame body configured to support the plurality of image forming units, and a regulating member disposed between a first-side image forming unit of the plurality of image forming units that is closest to the first side in the predetermined direction and a first-side end portion of the frame body in the predetermined direction, the regulating member configured to regulate an air current and urge the first-side image forming unit.

A display driving/controlling integrated circuit includes a display memory for storing data to be supplied to a display unit, a bus line of n-bit configuration for transmitting display data to be stored in the display memory, with n bits set as one unit, and a data array direction selection circuit connected to the bus line, for outputting display data on the bus line to the display memory with the bit array thereof kept in the original bit array status or outputting the display data to the display memory with the bit array thereof inverted with respect to the original bit array. There is provided means for writing display data with the bit array thereof inverted with respect to the original bit array when the display data is written into the display memory. Therefore, when the display panel is divided into upper and lower sections and driving LSIs have to be used for the upper and lower sections, wirings between the LSI output terminals and the display panel can be simplified and the wiring connections can be easily made.

Display driving/controlling integrated circuit and display system

A plurality of resistors serially connected with each other between a maximum voltage level 'V' and a minimum voltage level '0' are provided to generate voltage-divided intermediate voltage levels 'V2H', 'V1H', 'V3L', 'V2L', the voltages having the voltage-divided intermediate voltage levels being supplied to a first group of operational amplifiers whose first stage input portions are formed of N-channel MOSFETs and a second group of operational amplifiers whose first stage input portions are formed of P-channel MOSFETs. Frame signal FR for alternating-current-driving a liquid crystal display device is supplied to the operational amplifiers. When signal FR is in a state '0', the first group of operational amplifiers are brought into an active state while the second group is brought into an inactive state. When signal FR is in a state '1', the first group of operational amplifiers are inactive. Under the condition that power down signal PD for non-use of the liquid crystal display device is generated, all of the operational amplifiers are controlled to be in an inactive state.

Growing community of inventors

Nagoya, Japan

Takashi Arakawa