Canon Kabushiki Kaisha

Yoshihito Osari

Eiichi Motoyama

Yuichi Yamamoto

Akinobu Nishikata

Kuniyasu Kimura

Hiroaki Tomiyasu

Takahiko Yamaoka

Mitsuhiko Sato

Nobuo Sekiguchi

Masahiro Serizawa

Shokyo Koh

Michio Kawase

Kiyoshi Okamoto

Tadaaki Saida

Yuichiro Maeda

Shunsaku Kondo

Shigeo Hata

Noriyoshi Chizawa

Rieko Akiba

Masashi Oyumi

Yuichi Ikeda

Satoshi Kuroyanagi

Hidenori Sunada

Yasushi Takeuchi

Masahito Yamamoto

Yoshihiro Funamizu

Yasuyuki Aiko

Jun Tomine

Satoru Yamamoto

Mitsushige Murata

Keizo Isemura

Toshio Hayashi

Takashi Fujimori

Tokuharu Kaneko

Shoji Takeda

Kazuhiko Hirooka

Hajime Kaji

Masatoshi Tanabe

Tetsuya Nozaki

Tsunao Hombo

Shunichi Komatsu

Akihiko Satoh

Michiharu Masuda

Junichi Intoh

An information processing apparatus determines whether an authentication portion on an image forming apparatus side can authenticate user authentication information input on the information processing apparatus side. If it is determined that the authentication portion on the image forming apparatus side can authenticate the user authentication information input on the information processing apparatus side, transmission of image data from the information processing apparatus to the image forming apparatus is controlled.

Information processing apparatus, image forming apparatus, image forming system, information processing method, and image forming method

A printer control apparatus can be applied to an image forming apparatus in which a plurality of types of readers and a plurality of types of printers can be connected to a single controller, and which enables efficient transfer of image data from the reader to the printer via an image memory of the controller. The controller receives image data from a reader and temporarily stores the same in an image memory, and transmits the stored image data to a printer. The controller acquires a reader processing speed from the reader and a printer processing speed from the printer, and determines, while the image data is being written to the image memory, timing for transmitting the image data written in the memory to the printer according to a difference between the reader processing speed and the printer processing speed and a sub-scan size of the image data.

Printer control apparatus and method of controlling the same, printer and method of controlling the same, reader and method of controlling the same, and image forming system

An image forming apparatus includes an image bearing member; toner image formation means for forming a toner image on the image bearing member; removing means for removing deposited matter deposited on the image bearing member; detecting means for detecting a toner image to be detected, formed on the toner image formation means; control means for controlling a toner image forming condition of the toner image forming means in accordance with a result of detection of the toner image to be detected by the detecting means; the apparatus being operable in a mode in which the removing means operates to remove the deposition, and the detecting means operates to detect the toner image to be detected, executing means for executing an operation in the mode; and an operating portion for manually starting execution of the operation in the mode by the executing means.

Image forming apparatus and image controlling method

A plurality of subsystems having diverse individual functions can be connected to an image forming apparatus. Each of the subsystems is made up of, for example, plural kinds of units which are different in performance from each other. Each of the units has inherent information related to the performance, and decides the operation specification of the entire image forming apparatus according to the combination of those units.

Image forming apparatus

An image forming apparatus capable of reducing a part of a sheet exposed outside the apparatus on standby after finishing printing a first side in both-sided printing. A transfer material P having an image formed on its first side is fed until a part thereof gets exposed outside a full-color printerand is fed to a refeeding path in the full-color printer. The transfer material P inverted by a flapperis fed to a standby position to form an image on a second side thereof and is stopped there. In the case where a preparation for forming the image on the second side is not completed, the standby position for having the transfer material P stopped is changed corresponding to length of the inverted transfer material P in a feeding direction.

Image forming apparatus and control method therefor

In image reading apparatus capable of performing a read-while-feed operation in which an original is read while being fed by an image sensor placed at a fixed position, presence/absence of dust and/or dirt on a platen is detected, and, in a case where dust and/or dirt are detected at all of a plurality of predetermined positions by said detector, the read-while-feed operation is inhibited and the presence of dust and/or dirt is notified to a user. When, removal of dust and/or dirt on the platen is detected in a state that the read-while-feed operation is inhibited, the read-while-feed operation is allowed.

Dust and/or dirt detection in image reading apparatus having read-while-feed function

An RFID tag formed on an original includes a storage unit which stores data representing, e.g., the number of times of scan of the original and the generation from a parent original, and a transmitter/receiver which transmits and receives the data by radio. A read/write circuit receives data from an RFID tag of an original by radio. On the basis of the received data, read of the original is controlled. While the original is being read, the received data is edited in accordance with the control. The read/write circuit transmits and writes the edited data in the RFID tag.

Image reading/forming apparatus and method

Image forming apparatus and controlling method

An image forming apparatus has a configuration in which a plurality of subsystems, each having a specific function, are interchangeably connected to a base platform. Each of the subsystems includes a plurality of units having a variety of different performances. A control unit is capable of control each of the subsystems so that the image forming apparatus flexibly provides functions that are tailored to individual users' requirements.

Image forming apparatus including an interchangeable engine and an interchangeable paper feeding and outputting system

There is provided a printer control apparatus which can be applied to an image forming apparatus in which a plurality of types of readers and a plurality of types of printers can be connected to a single controller, and which enable efficient transfer of image data from the reader to the printer via an image memory of the controller. The controller receives image data from a reader and temporarily stores the same in an image memory, and transmits the stored image data to a printer. The controller acquires a reader processing speed from the reader and a printer processing speed from the printer, and determines, while the image data is being written to the image memory, timing for transmitting the image data written in the memory to the printer according to a difference between the reader processing speed and the printer processing speed and a sub-scan size of the image data. The controller causes the reader to start reading an original, and transmits the written image data from the image memory to the printer in the determined timing.

An image forming apparatus includes a position detection circuit which detects the registration error amount between a recording medium conveyance unit and an image forming unit positioned by a positioning mechanism, on the basis of reading of a reference pattern arranged on either unit, and a controller which calculates a correction amount on the basis of the detected registration error amount and controls the operation timings of the image forming unit and recording medium conveyance unit in accordance with the correction amount.

An image forming apparatus that is capable of normally performing second side printing on a transfer material, even if the transfer material put on standby after completion of first side printing is pulled out by a user. A transfer material having image formed on its first side is fed until it is partly exposed to the outside of a printer, and is then fed to a refeeding path in the printer and further fed to a standby position prior to image formation on the second side of the transfer material. When it is detected that the transfer material caused to stop at the standby position is pulled out by a user, a warning to stop pulling out the transfer material is given to the user.

An image forming apparatus changes over an electric potential on an image bearing member in response to an attenuation region in which a remaining potential on a developing member is attenuating after a developing bias applied to the developing member has been turned off after completion of an image forming operations. Accordingly, it is possible to mitigate adherence of developer due to a large potential difference between the developing member and the image bearing member.

Image forming apparatus with switched-potential responsive to attenuation of a remaining voltage

In an image forming apparatus includes a containing device for containing waste toner which is recovered, and a near-end position detecting device that detects that the waste toner is at a near-end position in the containing device, and a judgment feature that the waste toner is full based on image judgement means for judging whether the container after detecting means detects that an amount of toner in the container is full of toner, based on image information of an image formed on a recording material and the adjustment by the adjusting means.

Image forming apparatus including a toner waste container near-end condition detection feature and a full condition judgment feature

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Tokyo, Japan

Yoshihito Osari