Canon Kabushiki Kaisha

Kabushiki Kaisha I.s.t.

Hiroshi Sasame

Tetsuya Kobayashi

Yoshiro Saito

Naoki Enomoto

Tatsuya Kobayashi

Takashi Kawana

Masaharu Ohkubo

Hiroshi Mano

Masaki Ojima

Akihiko Uchiyama

Kaoru Seto

Shinya Yamamoto

Tetsuo Saito

Atsushi Kashihara

Hiromichi Yamada

Akihiko Takeuchi

Haruo Fujii

Hiroaki Ogata

Hideyuki Yano

Hiroto Hasegawa

Michio Ito

Tomomi Kakeshita

Youichirou Maebashi

Koichi Tanigawa

Yoichiro Maebashi

Tatsuhiko Hayakawa

Hideo Nanataki

Toshiaki Miyashiro

Yasumasa Ohtsuka

Takahiro Inoue

Michio Itoh

Hiroshi Atobe

Kazushige Sakurai

Seiji Uchiyama

Shinichi Tsukida

Kazuaki Ono

Takayasu Yuminamochi

Takashi Hibi

Hiroyuki Adachi

Masahiro Goto

Yasushi Sato

Takehiko Suzuki

Takaaki Tsuruya

Yasunari Watanabe

Masahiro Watabe

Arihiro Yamamoto

Takeo Shoji

Takao Aoki

Manabu Takano

Yoshihiro Murasawa

Jun Asai

Yasumasa Otsuka

Noriyuki Yanai

Motoi Kato

Toru Ishigaki

Daisuke Murata

Hideo Nanatani

Akio Suzuki

Satoshi Shimizu

Hisashi Fukushima

Motoki Adachi

Toshio Miyamoto

Kazuhisa Kemmochi

Toshihiko Ochiai

Yukihiro Ohzeki

Hideki Anayama

Hiroaki Kawakami

Tomoyuki Okada

Takashi Soya

Masaaki Sakurai

Katsuhiko Nishimura

Kouji Hashimoto

Atsushi Shoji

Fumihiro Ueno

Tatsunori Ishiyama

Yasumi Yoshida

Tsukasa Kuge

Masao Nakano

Eiichiro Teshima

Soya Endo

Toshio Yoshimoto

Kenji Nagata

Yoshimi Ogasawara

Motoi Katoh

Isamu Sakane

Makoto Abe

Harumi Kugoh

Fumitaka Aoki

Hirokazu Ikenoue

Iichiro Yamamoto

Moriyuki Yanai

Hideo Kimata

Tomoyuki Ohkura

An image forming apparatus or a cartridge detachably attachable to the image forming apparatus is provided, wherein the apparatus comprises developer container for containing developer, developer amount detecting means for detecting an amount of the developer contained in the developer container, a memory for memorizing information concerning the amount of the developer detected by the detecting means and output means for outputting the information concerning the amount of the developer, and the output means outputs the information concerning the developer memorized in the memory until the detection result of the detecting means is confirmed.

Image forming apparatus having developer amount detector

An image forming apparatus or a cartridge detachably attachable to the image forming apparatus is provided, wherein the apparatus comprises a developer container for containing developer, a developer amount detector for detecting an amount of the developer contained in the developer container, a memory for memorizing information concerning the amount of the developer detected by the detector and an output unit for outputting the information concerning the amount of the developer. The output unit outputs the information concerning the developer memorized in the memory until the detection result of the detector is confirmed.

MEMORY DEVICE STORING INFORMATION WARNING A USER ABOUT THE DEVELOPER-REMAINING AMOUNT, A PROCESS CARTRIDGE INCLUDING A MEMORY STORING SUCH INFORMATION, AND A CONTROL SYSTEM AND A MEMORY SYSTEM FOR WARNING A USER ABOUT THE DEVELOPER-REMAINING AMOUNT

IMAGE FORMING APPARATUS COMPRISING MEANS FOR DETECTING AN AMOUNT OF DEVELOPER CONTAINED IN A DEVELOPER CONTAINER, A MEMORY FOR STORING THE AMOUNT DETECTED BY THE DETECTING MEANS, AND CONTROL MEANS FOR UPDATING THE INFORMATION STORED IN THE MEMORY

The present invention provides an image forming apparatus that has a plurality of image forming stations for forming an image on a recording material, each of the plurality of image forming stations having a memory, and writing device for writing data into the memories, wherein when the image is formed on the recording material without at least one of the image forming stations being used, the writing device writes use data into the memory of the station used and the memory of the station not used.

Image forming apparatus having a plurality of image forming stations, and unit detachably mountable on the apparatus

A use situation reporting system reports the use situations of a developer and other consumables included in an image forming apparatus for forming images on a recording material. More particularly, the use situation reporting system reports an amount of remaining developer and the use times of consumables to a user. Thus, the timing of replacing a cartridge with a new one can be concisely reported to the user.

Image forming apparatus, and use situation reporting system for reporting use situations of developer and other consumables stowed in image forming apparatus

The present invention provides an image forming apparatus which has image forming device for forming an image on a recording material, at least one component element of the image forming means being formed in a unit and detachably attachable to a main body of said apparatus, and output device for outputting information of an expiration date of the unit for use.

Image forming apparatus and unit detachably attachable to the same image forming apparatus and information displaying system related to unit detachably attachable to the same image forming apparatus

An image recording apparatus for recording image data from an external apparatus is provided, which receives the image data as an image signal from the external apparatus, records the received image signal, and outputs a characteristic signal regarding a recording characteristic of the recording apparatus to the external apparatus.

Image recording apparatus which sends charasteristic/correction signals whenever new look-up table are selected or a pre-selected number of pages have been printed

In an image forming apparatus adapted to form images by employing a plurality of image bearing members, when a monocolor mode is selected, no toner image is formed on photosensitive drums of the colors other than the photosensitive drum on which a black toner image is formed. However, the photosensitive drums of the remaining colors continue to run while maintaining a speed difference in a four-full-color mode in relation to an intermediary transfer belt. As a result, some photosensitive drums reach their service life even if the toners contained in developing devices have not yet run out or even if images have not yet been formed on a predetermined number of transfer materials. To solve the problem, the peripheral speed of each of the photosensitive drums in the black monocolor mode for producing monochrome images is set to be faster than that in the full-color mode so as to make the peripheral speed virtually equal to the moving speed of the intermediary transfer belt.

Image forming apparatus

A developing apparatus has a developer bearing member for bearing and carrying a nonmagnetic developer, a layer thickness regulating member for regulating a layer thickness of the developer borne by the developer bearing member, developing bias applying device for applying an alternating current voltage to the developer bearing member, and regulating member bias applying device for applying a direct current voltage to the layer thickness regulating member, and wherein &verbar;DC &verbar;>&verbar;DC &verbar; is satisfied when DC is an effective value of the alternating current voltage applied to the developer bearing member and DC is a value of the direct current voltage applied to the layer thickness regulating member, the direct current voltage value DC has a polarity, which is reverse to a charging polarity of the developer with respect to the effective value DC

Developing apparatus having a direct or alternating current applied thereto

An image forming apparatus has a developer container for containing a developer, a developer amount detecting device for detecting the amount of the developer contained in the developer container, a consumed amount calculating device for calculating the consumed amount of the developer, and a remaining amount calculating device for calculating the remaining amount of the developer from an output of the detecting device and an output of the consumed amount calculating device.

Image forming apparatus having developer amount detecting means and cartridge detachably mountable on the apparatus having a memory for storing information on the amount of developer detected by detecting means

An image forming apparatus includes an image bearing member, a container for containing a developer removed from the image bearing member, a detector for detecting an amount of developer removed from the image bearing member and contained in the container, and a failure detector for detecting a failure of the developer amount detector on the basis of the degree of use of the image bearing member and a detection result of the developer amount detector.

Image forming apparatus having means for detecting amount of developer used and means for detecting failure of used developer amount detecting means

An output apparatus capable of receiving multi-level dot information of a first recording dot density, generating multi-level dot information of a second recording dot density, and transmitting the thus-generated second dot information in a visible way. The output apparatus comprises: a receiving device capable of receiving multi-level dot information of a first recording dot density; a generating device capable of generating multi-level interpolation dot information by applying a predetermined calculation to the thus-received multi-level dot information; and a dot density conversion device capable of generating multi-level dot information of a second, higher recording dot density from said interpolation dot information and the received multi-level dot information, whereby high density image data can be generated from low density image data.

Dot image data output apparatus

An output apparatus capable of receiving multi-level dot information of a first recording dot density, generating multi-level dot information of a second recording dot density, and transmitting the thus-generated second dot information in a visible way. The output apparatus comprises: a receiving device capable of receiving multi-level dot information of a first recording dot density; a generating device capable of generating multi-level interpolation dot information by applying a predetermined calculation to the thus-received multi-level dot information; and a dot density conversion device capable of generating multi-level dot information of second higher recording dot density from said interpolation dot information and the received multi-level dot information, whereby high density image data can be generated from low density image data.

Dot image output apparatus

A color image forming apparatus for forming an image through an electrophotographic process, the apparatus having an electrophotographic photosensitive member; charging device for charging the photosensitive member; exposure device for exposing the photosensitive member to light information to form an electrostatic latent image; a color developing device for developing the electrostatic latent image with color toner; a black developing device for developing the electrostatic latent image with black toner; control device for controlling an image forming operation condition to change an image quality; first integrating device for integrating an amount of color image output; second integrating device for integrating an amount of black image output; wherein the control device is responsive to a predetermined output of the first integrating device and to a predetermined output of the second integrating device which is different from the predetermined output of the first integrating device, and wherein the control device controls a condition relating to a color image output on the basis of the predetermined output of the first integrating device, and controls a condition relating to a black image output on the basis of the predetermined output of the second integrating device.

Color image forming apparatus

Growing community of inventors

Yokohama, Japan

Hiroshi Sasame