Canon Kabushiki Kaisha

Ricoh Company, Ltd.

Fuji Photo Film Company, Limited

Fujifilm Corporation

Mochida Pharmaceutical Co., Ltd.

Other

Hitachi, Ltd.

Hitachi-kokusai Electric Inc.

Tsinghua University

Kyushu University

Shinshu University

Anaeropharma Science, Inc.

Takashi Yano

Koji Yamaguchi

Makoto Hayashida

Tetsuo Uesugi

Junichi Takami

Tetsuya Sakayori

Yoshifumi Sakuramata

Iwao Saeki

Hiroko Mano

Yasuhiro Tabata

Takanori Nagahara

Hisashi Ishijima

Haruo Shida

Masato Suzuki

Hiroshi Tamayama

Hidehiro Ushiozu

Yoshinaga Kato

Shoichi Zensai

Tomofumi Kawamura

Tatsuo Tani

Yasuhiko Fuse

Naoki Kubo

Hiroshi Kato

Kunikazu Tsuda

Isao Nakamura

Hiroyuki Idenawa

Takeshi Misawa

Keisuke Yamamoto

Yoshihiko Hotta

Jin Murayama

Seiichi Miyakawa

Keishi Kubo

Akihisa Yamazaki

Masaaki Orimoto

Makoto Shizukuishi

Makoto Tanaka

Kimiaki Nakada

Susumu Tatsumi

Ryuji Kondo

Takeshi Suga

Shoji Maruyama

Masaki Kobayashi

Kosuke Ogino

Daisuke Momiyama

Nachio Seko

Lei Li

Hiroshi Kobayashi

Takao Inoue

Noriaki Sato

Shinya Noda

Shinichiro Sonoda

Masato Tanabe

Toshiaki Takeuchi

Yohei Suzuki

Hideaki Takada

Eiji Suzuki

Toshihiro Kobayashi

Masaki Seto

Kenzaburo Fujishima

Yuuki Nakamura

Toshiyuki Furuta

Toshiharu Murai

Satoshi Tamaki

Hiroshi Hagiwara

Mahito Yoshioka

Tsukasa Abe

Katsuyuki Omura

Tetsuya Sano

Takashi Kitaguchi

Kazutaka Sueshige

Satoshi Tsuda

Motoyasu Muramatsu

Satoshi Murasaki

Takateru Ohkubo

Motoharu Tanaka

Yuji Mitsui

Tetsuya Ikeda

Masumi Ikesue

Kenji Takagi

Takashi Soga

Kaoru Maeda

Tomohiko Beppu

Ryo Kitano

Hiroshi Kamizuma

Zhisheng Niu

Tatsuro Harada

Jiro Moriya

Tsuyoshi Harada

Yuichi Igarashi

Kazunori Hoshi

Ryuichi Shimamura

Kenji Abe

Bin Lu

Kenichirou Isobe

Hajime Machida

Hisashi Enomoto

Eiji Wakiyama

Katsuyuki Kaji

Kimihiro Murakami

A cartridge includes a coupling positioned at an end of a photosensitive drum, with the coupling including (i) a cylindrical main body positioned coaxially with the photosensitive drum and open to outside of the cartridge and (ii) a projection positioned in the cylindrical main body. The projection is movable relative to the cylindrical main body between a first position and a second position such that an end of the projection is positioned closer to the rotational axis of the coupling when the projection is in the first position than when the projection is in the second position. A part of the cylindrical main body is positioned outside the photosensitive drum, and a part of the cylindrical main body is positioned inside of the photosensitive drum, and the projection is at least partially positioned inside of the photosensitive drum.

Drum unit, cartridge and coupling member

A sheet feeding apparatus includes a stacking unit including a plate, a feeding unit including a roller, a holder including a detected member, a drive unit and a controller. The detected member is positioned in a first position where the detected member is not detected by a detector in a case that the feeding unit is new, and is moved from the first position to a second position where the detected member is projected so as to be detected by the detector when the new feeding unit is mounted on the holder and the roller is driven. The controller controls the drive unit to perform up-and-down operation of the plate so that the plate is set to a feedable state of the sheet in a case that the feeding unit is mounted, and determines whether or not the feeding unit is new based on a detection result of the detector.

Sheet feeding apparatus and image forming apparatus

A developing cartridge includes a coupling member provided adjacent to a first end of a casing. The coupling member is operatively connected to a developing roller, and the coupling member is rotatable about a rotational axis thereof. The coupling member includes (i) a cylindrical portion, (ii) a first projection at least partially positioned inside of the cylindrical portion, (iii) a second projection at least partially positioned inside of the cylindrical portion, (iv) an elastically movable projection at least partially positioned inside of the cylindrical portion, and (v) a wall extending in a direction perpendicular to the rotational axis and positioned between a second end of the casing and the first and second projections.

A sheet conveying apparatus may comprise a first conveying roller configured to convey a sheet and a second conveying roller disposed on a downstream side of the first conveying roller in a conveyance direction of the sheet. In a case where the second conveying roller rotates at a first speed by a driving force being transmitted to the second conveying roller, the first conveying roller rotates by being driven with respect to the second conveying roller. In a case where the second conveying roller rotates at a second speed faster than the first speed by the driving force being transmitted to the second conveying roller, the first conveying roller rotates at the second speed.

Technique for switching rotational speed of plurality of rotating members

An image forming apparatus comprises an accommodating unit that accommodates recording materials and has a regulating plate that regulates a trailing edge of the recording material in a feeding direction, detects a recording material fed from the accommodating unit, and measures time from a predetermined timing until a recording material is detected. An information processing apparatus receives time data obtained by a measuring unit from the image forming apparatus, classifies a plurality of time data received from a reception unit into a first group and a second group in accordance with a length of time, and determines using time data included in the first group and the time data included in the second group whether a position of the regulating plate is misaligned in relation to a reference position that corresponds to a size of the recording material accommodated on the accommodating unit.

Image forming system and image forming apparatus

A coupling member is provided for a cartridge that includes a cylindrical photosensitive drum that is rotatable about an axis. The coupling member is operatively connected to the photosensitive drum and is capable of receiving a rotational force for rotating the photosensitive drum.

An image forming apparatus comprises an accommodating unit that accommodates recording materials and a feeding unit that feeds an accommodated recording material, detects a fed recording material, and measures time from a predetermined timing until a recording material is detected. An information processing apparatus receives measured time data from the image forming apparatus, classifies the received plurality of time data into a first group and a second group in accordance with a length of time, selects a group for predicting a remaining life time of the feeding unit from the classified first group and second group, and predicts a remaining life time of the feeding unit using time data included in the selected group.

Image forming system, image forming apparatus, and feeding apparatus

A cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.

A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis Land a coupling member operatively connected to the photosensitive drum. The coupling member includes a first member having a cylindrical portion, a part of the first member being positioned inside of the photosensitive drum and a part of the first member being positioned outside of the photosensitive drum. The coupling member also includes a second member operatively connected to first member, the second member including a plurality of arm portions that are movable relative to the first member, with at least a part of each of the arm portions being positioned inside of the photosensitive drum and inside of the first member.

A coupling member drum unit for a cartridge includes a cylindrical photosensitive drum having an axis Land a coupling member operatively connected to the photosensitive drum. The coupling member includes a drum flange provided at an end of the photosensitive drum, with a part of the drum flange being positioned inside of the photosensitive drum, and a connecting part operatively connected to the drum flange. The connecting part includes a cap positioned adjacent to the drum flange, an arm portion extending from the cap in a direction of the axis L, and a projection projecting from the arm portion in a direction perpendicular to the axis L, with the projection being movable between a first position and a second position, and with an end of the projection being closer to the axis Lin the first position than in the second position.

A process cartridge includes a photosensitive drum, a developing roller configured to develop a latent image on the photosensitive drum with toner, and a coupling member having a rotational axis, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes a cylindrical portion having an outer surface and an inner surface that extends about the rotational axis of the coupling member, an arm portion extending from the inner surface of the cylindrical portion, and a projection projecting from the arm portion in a direction toward the rotational axis of the coupling member. The arm portion and the projection are movable relative to the inner surface.

Photosensitive drum for process cartridge for image forming apparatus

A computer system, which estimates a radio wave propagation characteristic in a space where a wireless communication system using structure data and system data is constructed, includes a computer having a processor and a storage apparatus and holds feature parameter information, which stores an entry that associates a parameter included in structure data, that is, a feature parameter which greatly contributes to an estimation result of the radio wave propagation characteristic in the space with a type of the space. When receiving a request for estimation of a radio wave propagation characteristic in a target space, the processor retrieves an entry associated with a type of the target space from the feature parameter information, and presents an interface to input a value of the feature parameter included in the retrieved entry as estimation structure data and an interface to input estimation system data.

Computer system, method for estimating radio wave propagation characteristic in space, and computer

Growing community of inventors

Tokyo, Japan

Takashi Yano