Canon Kabushiki Kaisha

Michio Kawase

Masahiro Funada

Takahiro Watanabe

Shinobu Arimoto

Tetsuro Fukusaka

Jun Yamaguchi

Kazuyoshi Suzuki

Yoshiyuki Suzuki

Yoshihito Osari

Kenichi Outa

Kiyoshi Okamoto

Shigeo Hata

Noriyoshi Chizawa

Masashi Oyumi

Toshihiko Otsubo

Motoaki Tahara

Takashi Suzuki

Yoshinori Ikeda

Toshihiko Ohtsubo

Hiroyuki Takahashi

Yoichi Takaragi

Toshiyuki Kitamura

Masakazu Kitora

Tatsuhito Kataoka

Tsunao Hombo

Shunichi Komatsu

Michiharu Masuda

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 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 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

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.

Image forming apparatus and control method therefor

A heating apparatus includes a magnetic field generator that generates an alternating magnetic field, a rotatable member disposed in the alternating magnetic field and capable of generating heat by electromagnetic induction, a temperature detector that detects a temperature of the rotatable member, a comparator that compares the detected temperature to a target temperature: and a controller that controls electric energy supply to the magnetic field generator based on detected temperatures of different positions of the rotatable member.

Heating apparatus capable of controlling magnetic field strength based on temperature distribution data of rotational member in terms of circumferential direction

Image data is stored into an image memory, then an image processing unit performs image processing on the image data stored in the image memory and generates information on a predicted amount of developer consumed in image formation, based on the image data resulted from the image processing. A printer forms an image by using the developer based on the processed image data, thereafter, the developer is supplied in correspondence with the information on the predicted consumption amount of the developer. Thus, primary image processing functions can be integrated on an image processing board, and the developer consumption amount can be predicted by the image processing board based on the image data.

Image forming apparatus and developer supply method therefor, and image processing board

An image forming apparatus has a recording element array including plural recording elements, an image forming section for causing a relative movement between the recording element array and a recording medium, thereby to form an image, and a drive section for driving the recording element array based on image data. A duty control unit varies the recording duty of the recording elements according to the relative movement speed between the recording element array and the recording medium. In another version, an image forming apparatus has a recording element array including plural recording elements, an image forming unit that effects a relative movement between the recording element array and a recording medium, memory for storing image data, a drive unit for driving the recording element array based on the image data read from the memory and an inhibitor for selectively inhibiting the recording operation by the image read from the memory, according to the relative movement speed between the recording element array and the recording medium. In yet another version, an image forming apparatus has a recording element array including plural recording elements, an image forming unit for causing a relative movement between the recording element array and a recording medium, a smoothing unit for applying a smoothing process to the image data, according to the relative movement speed between the recording element array and the recording medium and drive means for driving the recording element array, based on the image data subjected to the smoothing process by the smoothing unit.

Image forming apparatus and recording control device

A unit connector for electrical connection with a main assembly connector provided in a main assembly of an electrophotographic image forming apparatus, includes memory for storing information; a memory connecting portion for electrical connection with said memory when said unit connector is mounted to a unit; an electrical part connecting portion for electrical connection with an electrical part of the unit when said unit connector is mounted to the unit; and a connector connecting portion for electrical connection with the main assembly connector of said apparatus.

Connector unit, process cartridge and electrophotographic image forming apparatus

A vibration control device of a vibration type motor stops motor driving when the actual driving speed, does not come close to a target speed though the frequency of a driving periodic signal is feedback-controlled to the target speed, to prevent an error when the driving circuit fails.

Drive control device of vibration type motor

An image formation apparatus which records an image on a recording medium is provided. The apparatus has a recording element array head on which plural recording chips are arranged, plural recording elements being arrayed on the recording chip, a reference clock generation unit for generating a reference clock, a main scan sync signal generation unit for generating a main scan sync signal by dividing the reference clock into 2,(n1: positive number) parts, an input unit for raster inputting image data for one line in synchronism with the main scan sync signal, a drive clock generation unit for generating a drive clock by dividing the reference clock into 2,(n2: positive number) parts and a drive unit for driving the recording chips in synchronism with the drive clock.

Image formation apparatus with clock circuit for driving recording chips

An image processing apparatus includes a first detection unit for detecting an edge of an input image on the basis of an input image signal, a second detection unit for detecting a screen portion of the input image on the basis of the input image signal, a processing unit for executing processing of the input image signal according to detection results of the first and second detection units, and a setting unit for setting detection modes of the first and second detection units.

Image processing apparatus

An image processing apparatus and method includes a device for judging the degree of color or lack of color of an input color image signal, judging dot areas in input color image signal and controlling a spacial filter or a density conversion device for processing the input image signal according to a judgment by the first and second judging results, the spacial filter or the density conversion device being controlled according to the judgment by the first and second judging results, wherein the image processing also includes the ability to independently set sharpness of each of a plurality of color component signals.

Image processing apparatus including means for judging a chromatic portion of an image

There is disclosed an apparatus for image reading or processing, that can precisely identify a particular pattern, such as of banknotes or securities of faithful copying of which is to be prohibited. The apparatus is provided with a detecting unit for detecting positional information of an original image, and a discriminating unit for extracting the pattern data of a certain part of the original image and discriminating whether the original image is the predetermined image, based on the similarity between the pattern data and the predetermined pattern.

Image reading or processing with ability to prevent copying of certain

A motor control apparatus, which can control the speeds of a plurality of motors with nearly no speed variations until the final target speed is reached, includes a target speed setting circuit for dividing the speed range of the motors up to the final target speed into n steps (n is an integer and n.gtoreq.2) to set a target speed, and setting the next divided target speed after all the motors have reached the current divided target speed.

Motor control apparatus

One of a plurality of image processing apparatus connected to an image processing system freely sets image forming conditions, such as recording paper size and enlargement/reduction magnification ratio, with regard to some or all of the other image processing apparatus, subsequently reads the image of an original by means of a reader, outputs image data indicative of the image read and transmits this image data to the other image processing apparatus. The image processing apparatus that has read the image of the original and the image processing apparatus that has received the image data output copies of the image of the original on the basis of the image forming conditions that have been set. Accordingly, it is possible to provide an image processing method and system in which a plurality of image processing apparatus are connected and identical images are outputted simultaneously from each of the apparatus connected.

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Abiko, Japan

Michio Kawase