Canon Kabushiki Kaisha

Kazumichi Sugiyama

Masato Tanaka

Takeshi Murakami

Daisuke Kawaguchi

Kazunori Noguchi

Yota Ito

Tsutomu Nishida

Takashi Anezaki

Hirofumi Kumoi

Harunobu Ogaki

Daisuke Miura

Kunihiko Sekido

Michiyo Sekiya

Atsushi Okuda

Masataka Kawahara

Yuka Ishiduka

Nobuhiro Nakamura

Hiroyuki Tomono

Wataru Kitamura

Akihiro Maruyama

Kazuhisa Shida

Masashi Nishi

Atsushi Sugita

Kenichi Ikari

Tatsuya Yamaai

Mai Murakami

Shoma Hinata

Hirotoshi Uesugi

Kazuhiro Yamauchi

Daisuke Tanaka

Naoki Okamoto

Satoru Nishioka

A camera control unit obtains information related to an optical correction of an interchangeable lens from an intermediate accessory by a second communication via a second communication path. The camera control unit controls a communication in a manner that the above-described information is used for the optical correction of the interchangeable lens.

Imaging apparatus, interchangeable lens, intermediate accessory, and control methods therefor

An accessory apparatus switches between a first communication mode where a signal for performing flow control is transmitted via a signal line CS each time a frame of data is transmitted via a signal line DATA and a second communication mode where the signal for performing the flow control is received via the signal line CS each time a predetermined number of blocks of data is transmitted via the signal line DATA.

Imaging apparatus, accessory apparatus, and methods for controlling same

An imaging apparatus to which an accessory apparatus is attachable includes a camera controller configured to communicate with the accessory apparatus. The camera controller receives first information on a data size receivable by the accessory apparatus, performs a setting for a data size to be transmitted to the accessory apparatus based on the first information, and communicate with the accessory apparatus based on the setting.

Imaging apparatus, accessory apparatus, and communication control method

An imaging apparatus to which a plurality of accessory apparatuses are attachable includes a camera communicator configured to provide a communication path with each of the plurality of accessory apparatuses, and a camera controller configured to communicate with the plurality of accessory apparatuses via the camera communicator. The camera controller transmits a first request to the plurality of accessory apparatuses, receives first information corresponding to whether or not to stop a communication with the imaging apparatus from each of the plurality of accessory apparatuses that have received the first request, and controls a communication with each of the plurality of accessory apparatuses according to the first information.

An imaging apparatus to which an accessory apparatus including a plurality of operation members is detachably attached includes a camera communicator configured to provide a communication path with the accessory apparatus, and a camera controller configured to communicate with the accessory apparatus via the camera communicator, and to transfer to a sleep state with the accessory apparatus when none of the accessory apparatus and the imaging apparatus are operated in a normal operation state. The camera controller designates a specific operation member among a plurality of operation members for the accessory apparatus. The camera controller in the sleep state returns to the normal operation state when receiving a communication from the accessory apparatus corresponding to an operation of the specific operation member.

Imaging apparatus, accessory apparatus, and control method

An apparatus and method is provided whereby identification information that is transmitted by a lens control unit via a first communication contact point group and identification information that is transmitted by the lens control unit via a second communication contact point group are set to be different from each other.

Imaging apparatus, interchangeable lens, accessory apparatus, and control methods therefor

Provided is an electrophotographic photosensitive member that can suppress a ghost image while keeping its sensitivity satisfactory. The electrophotographic photosensitive member includes a support, an intermediate layer on the support, and a photosensitive layer on the intermediate layer, and the intermediate layer contains a compound having a specific structure.

Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic image forming apparatus

An electrophotographic photosensitive member includes a surface layer containing a charge transporting material and a specific polyester resin having a structure including a specific branched chain.

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

An electrophotographic photosensitive member including a surface layer containing a specific polyester resin is provided. The polyester resin contains specific structures.

Provided is an electrophotographic photosensitive member capable of suppressing a ghost image. The electrophotographic photosensitive member includes, in this order: a support; an intermediate layer containing metal oxide particles; and a photosensitive layer, in which the intermediate layer contains at least one kind of compound X selected from the group consisting of a compound represented by the formula (1) and a compound represented by the formula (2). 

Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus each including the electrophotographic photosensitive member

An electrophotographic photosensitive member including a surface layer containing a charge generating material and a polyester resin is provided. The polyester resin contains a structure having a 12- or higher-membered cycloalkylene group.

An undercoat layer of an electrophotographic photosensitive member contains a binder resin and conductive particles. Each of the conductive particles has a core particle coated with tin oxide doped with aluminum.

An electrophotographic photosensitive member has a support, a charge generation layer, and a charge transport layer in this order, the charge transport layer containing a charge transport material. The charge transport layer is a surface layer of the electrophotographic photosensitive member and contains a polycarbonate resin having a structural unit selected from group A and a structural unit selected from group B.  

Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

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Numazu, Japan

Kazumichi Sugiyama