Canon Kabushiki Kaisha

Takashi Fujimori

Hiroyuki Eda

Hidenori Sunada

Eiichi Motoyama

Kenji Kuroki

Mitsuhiko Sato

Satoru Yamamoto

Shokyo Koh

Hiroaki Tomiyasu

Hidenori Matsumoto

Hajime Kaji

Junichi Endo

Hideyuki Ikegami

Yuichi Yamamoto

Keita Takahashi

Yoritsugu Maeda

Satoru Kanno

Naoto Watanabe

Shunsuke Nishimura

Yoshihito Osari

Shinichi Takata

Takahiko Yamaoka

Asahiro Nakayoshi

Takashi Nagaya

Jun Yamaguchi

Hijame Kaji

The image forming apparatus comprises a photosensitive drum which is replaceable, an intermediate transfer belt unit which is brought into contact with the photosensitive drum to operate and which is replaceable, and a separation motor configured to move the intermediate transfer belt unit in a direction toward the photosensitive drum and in a direction away from the photosensitive drum. The image forming apparatus causes the separation motor to separate the intermediate transfer belt unit and the photosensitive drum from each other in a case where at least one of the photosensitive drum and the intermediate transfer belt unit reaches the replacement timing when the image forming apparatus shifts to a low-power state in which power consumption of the image forming apparatus is suppressed compared with that of the image forming apparatus in a normal operation.

Image forming apparatus, control method of contacting/separating state of component

An image forming apparatus having improved installability and operability. The image forming apparatus has an operation unit thereof disposed on an arm extending from the apparatus and pivotable around a support member in substantially the horizontal direction, and has sensors for detecting the pivot position of the operation unit. An initial-screen setting screen determined based on the pivot position of the operation unit detected by the sensors is displayed on the operation unit.

Image forming apparatus with pivoting operation panel control method therefor, and operation apparatus of equipment

An image forming apparatus which makes it possible to resolve correction error of potential unevenness caused by insufficient mounting accuracy of an image carrier, in a relatively short time period without performing a conventional operation for removing the image carrier. The image forming apparatus includes a photosensitive drum, an exposure unit, an electrical potential sensor, a shading data ROM, and a CPU. Electrical potential data items associated with respective positions on the surface of the photosensitive drum are stored in the shading data ROM. The CPU corrects an exposure amount onto the photosensitive drum by the exposure unit, based on the electrical potential data read from the ROM, and based on the result of correction, adjusts timing for reading out the data.

Image forming apparatus

An image forming apparatus has an informing portion that issues information; a storing portion that stores sheets; a sheet detecting portion that detects presence or absence of the sheets in the storing portion; a determination portion that determines a type of the sheets stored in the storing portion; and a control portion that causes the informing portion to issue a predetermined information in a case where the absence of the sheets is undetected by the sheet detecting portion and a change of the type of the sheets is determined by the determination portion.

Image forming apparatus with control causing issuance of predetermined information based on sheet information

A sheet feeding apparatusincludes a lifter platethat is disposed in a sheet storage caseand stacks a sheet, an air heaterand a fanthat blow heated air to the sheetstacked on the lifter plate, and a control devicethat changes a control condition of the heated air blown by the air heaterand the fanbased on a storage period of time of the sheeton the lifter plate

Sheet feeding apparatus and image forming apparatus

A belt feeding apparatus includes an endless belt and a supporting member for rotatably supporting the belt. The belt feeding apparatus further includes a setting member for setting, when the belt is deviated from a widthwisely normal zone, an inclination angle of the supporting member to a return angle to return the belt toward the normal zone. The setting member also sets, when a predetermined time elapses from the belt returning to the normal zone, the inclination angle of the supporting member to a balance angle to keep the belt in the zone.

Belt feeding device and image heating device with setting means for switching inclination angle of supporting member

An image forming apparatus capable of shortening first copy time to thereby reduce wait time before execution of a print job and prolonging the service life of a scanner motor at the same time. An image forming apparatus that forms a latent image on a photosensitive drum in response to a copy start instruction signal. A scanner motor drives a rotating polygonal mirror that scans the photosensitive drum by reflecting light, for rotation. A counter counts the number of times of start of the motor. A control circuit causes the scanner motor to be started up before the signal is generated, if the count of the counter is less than a predetermined value, and to cause the scanner motor to be started up upon generation of the signal, if the count of the counter is not less than the predetermined value.

The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.

Image forming apparatus for forming color images and monochrome images

An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.

Method for controlling image forming apparatus

A belt feeding apparatus includes an endless belt; a supporting member for rotatably supporting said belt; and setting means for setting, when said belt is deviated from a widthwisely normal zone, an inclination angle of said supporting member to a returning angle to return said belt toward the normal zone, and for setting, when said belt is in the normal zone, the inclination angle of said supporting member to a balance angle.

Belt feeding device and image heating device with endless belt deviation control

An image forming apparatus which enables easy management of proofs in a printing process. An image forming apparatusis provided with a reader unit, a transfer charger, color sensors-to-, a printer controlling unit. The reader unitinputs image data for forming an image on a sheet having an RFID tag. The transfer chargergenerates a transfer image for forming the image on the sheet based on the inputted image data. The color sensors-to-measure image formation conditions of the transfer image. The printer controlling unitwrites the measured image formation conditions into the RFID tag

Image forming apparatus, control method therefor, control program and image forming system

An image forming apparatus which is capable of performing a failsafe image forming operation even when a memory device of a replaceable unit mounted thereon is faulty. A controller of the image forming apparatus determines whether or not a memory tag of a toner cartridge is faulty. If the memory tag is determined to be faulty, the controller causes image adjustment to be executed.

Image forming apparatus and control method therefor

An image forming apparatus capable of carrying out color misregistration correction at an appropriate time and providing a high-quality image free from color misregistration. A toner image is formed on the basis of an input image information signal. A width of the toner image is determined on the basis of the input image information signal, before forming the toner image in a predetermined area. The width of the toner image formed in the predetermined area is detected. The detected width of the toner image is compared with the determined width of the toner image. It is judged on the basis of the comparison result whether or not color misregistration is present.

Growing community of inventors

Moriya, Japan

Takashi Fujimori