Canon Kabushiki Kaisha

Masayoshi Taira

Satoshi Kaneko

Hirokazu Takahashi

Keizo Isemura

Noriaki Matsui

Tokuharu Kaneko

Masahiro Serizawa

Yoshio Mizuno

Taisei Fukada

Akihiko Satoh

Hirohiko Kishimoto

Yoshihiro Hosomi

Takashi Sugiura

Akinobu Nishikata

Tsuyoshi Moriyama

Yushi Oka

Takako Hanada

Shinichi Takata

Toshifumi Kakutani

Hiroaki Tomiyasu

Naohisa Nagata

Satoru Kanno

Fumitaka Sobue

Takeharu Uchizono

Hideaki Chishima

Tetsuya Morita

Kunio Tsuruno

Hiroaki Takeda

Masahiro Kurahashi

Koki Kuroda

Yukimasa Iseki

Satoru Kijima

Yasuyuki Aikoh

Shunji Yamashida

A punching apparatus having a punching member which effects punching on a sheet, and a driving mechanism which moves the punching member in a sheet width direction intersecting with a sheet conveying direction. On the basis of the difference between the position of a current sheet and the position of a next sheet succeeding thereto detected by a detecting sensor which detects the position of each conveyed sheet in the sheet width direction, at a position upstream of the punching member, the punching member is moved by the driving mechanism along the sheet width direction from a punching position for the current sheet to a punching position for the next sheet.

Image forming system, sheet treating apparatus, image forming apparatus, control program and storage medium

The invention comprises registration roller pairs which detect a skew amount of a sheet being conveyed; registration roller pairs which perform skew correction of the sheet while the sheet is being conveyed; a punch unit which performs punching of the sheet; a punch-unit driving portion which drives the punch unit; a sheet-edge detecting sensor which performs detection of a sheet edge in a direction intersecting with a sheet conveyance direction; a punch-unit moving device which moves the punch unit in the direction intersecting with the sheet conveyance direction; a sheet detecting sensor which performs detection of a sheet position in the sheet conveyance direction; and a controller portion which performs control such that after skew of the sheet is corrected by the registration roller pairs in accordance with detection results of skew amount sensors, and punching is performed on the sheet by the punch-unit moving device and the punch driving portion in accordance with a detection result of the sheet detecting sensor.

Sheet processing apparatus and image forming apparatus having same

A temperature control device includes a first heat source, a second heat source configured to heat a controlled object subjected to temperature control, a first temperature detector configured to detect a temperature of heat from the first heat source, a second temperature detector configured to detect a temperature of the controlled object, a heat transfer member configured to transfer heat produced by the first heat source to the controlled object, a heat-transfer-amount changing unit configured to change the amount of heat transferred to the controlled object by the heat transfer member, and a controller configured to control a transfer state of the heat-transfer-amount changing unit on the basis of an output from the first temperature detector and an output from the second temperature detector.

Temperature control device and image forming apparatus

An image forming apparatus has a water content determination apparatus that can precisely determining a water content in a medium regardless of an environment where the image forming apparatus is installed. The water content determination apparatus has a detection device that outputs a first signal while the medium is absent in an electrostatic capacitance region formed in a path where the medium is conveyed and outputs a second signal while the medium is present in the electrostatic capacitance region. The temperature in the image forming apparatus is determined based on the first signal. The water content in the medium is determined based on the second signal and the temperature determined by the temperature determination device.

Water content determination apparatus, image forming apparatus, control method, and program

An image forming apparatus in which the intensity of a light beam used to form a latent image is switched in response to a change in resolution. A laser emits a light beam for forming a latent image on a photosensitive drum. A polygon mirror scans the emitted light beam. BD sensors detect the scanned beam. A timing controller selects the preferable timing from a storage device table according to the intensity of the light beam or the resolution when controlling the light emission timing of the lasers in response to a detection of timing of the detected light beam.

Method and apparatus for image forming

An image processing apparatus structured by combining an image reading apparatus and an image formation apparatus with each other enables a user to freely combine these apparatuses without considering the sum of power consumption of the image reading apparatus and power consumption of the image formation apparatus. When the sum of power consumption of a reader unit and power consumption of a printer unit exceeds, e.g., 1.5 kW, the reader unit is set to be in a low power consumption mode such that the sum of power consumption becomes equal to or smaller than 1.5 kW. Even when the low power consumption mode of the least power consumption quantity is selected and the sum of power consumption still exceeds 1.5 kW, use of the apparatus is inhibited and the inhibition is displayed.

Image processing apparatus, image reading apparatus, image formation apparatus, control method thereof, and storage medium

An image processing apparatus is provided which comprises an image reading section for reading an original document by causing an image reading head of the image reading section to move relative to an original document; an image recording section for recording an image on a recording medium in accordance with an image signal; a power source for supplying power to the image reading section and the image recording section; and a control device for controlling the speed of movement of the image reading head according to an operating state of the image recording section. The image processing apparatus of the invention overcomes problems associated with the use of prior art image forming apparatus, such as multi-function copying machines, that include an image reading section and an image recording section, and which require the use of large-capacity power sources for supporting the electrical loads of various components that may be operating simultaneously within the individual apparatuses.

Image processing apparatus and method of controlling the same

In order to separately detect an abnormal temperature rise at a fixing roller of an image forming apparatus and a disconnection of a thermistor that detects the temperature of the fixing roller, the first and the second resistors are selected and connected to a thermistor for predetermined periods of time. When the first resistor is connected to the thermistor, a disconnection of the thermistor is detected based on a detection voltage that corresponds to the voltage division ratio of the reading for the first resistor to the reading for the thermistor. When the second resistor is connected to the thermistor, an abnormal temperature rise of the fixing roller is detected based on a detection voltage that corresponds to the voltage division ratio of the reading for the second resistor to the reading for the thermistor.

Control apparatus for energizing heating element

The apparatus reads an original by an image reader, and if it recognizes caption(s) included in the original, stores a page number of the original into a memory, thereafter, performs copying based on the stored page number such that the original page including the caption is transferred onto the front side of a recording sheet.

Image forming apparatus

An image processor rotates an image in conformity with the orientation of an original, thereby enhancing user convenience. An original conveyed by an automatic conveyance device is read by an image reader and the image is stored in an image memory. A character in the stored image is subsequently recognized by a character recognition unit and the orientation of the character is discriminated. The image is rotated by an image editor in conformity with a stapling position, and the rotated image is recorded by an image recording unit. Sheets of paper on which images are recorded are stapled at the stapling position by a staple provided in a sorter.

Copier which rotates an image based on the recognition of an extracted

A method and apparatus for recognizing character information in an original document with high recognition accuracy regardless of the size of a character to be recognized. An input image is processed by an image processing circuit and stored in an image recording unit. A character region in the recorded image data is detected by a recognition section, and the image corresponding to the detected character region is read with a predetermined magnification. Character recognition is performed on the image of the character region read at the predetermined magnification, in the recognition section. If the recognition accuracy does not satisfy a predetermined criterion, the same image is read again with a modified magnification wherein the magnification is determined on the basis of preset sizes and the size of the character pattern of a character to be recognized. The image obtained in this way is subjected again to character recognition processing until the recognition accuracy satisfies the predetermined criterion. A character pattern corresponding to the recognized character is generated, and recorded together with the image recorded in the image recording unit in an image recording section. Thus, an image is read with a magnification optimized depending on a character size of an original document image and on a recognition accuracy.

Method and apparatus for recognizing character information at a variable

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Kashiwa, Japan

Masayoshi Taira