Canon Kabushiki Kaisha

Fujitsu Corporation

Nippon Telegraph and Telephone Public Corporation

Minolta Camera Kabushiki Kaisha

Hitachi, Ltd.

Toshio Hayashi

Kazuo Yoshinaga

Nobuatsu Sasanuma

Shinobu Arimoto

Takehiko Nakai

Tsutomu Utagawa

Tetsuya Nagase

Hiroshi Tanioka

Mitsushige Murata

Yoshihiro Funamizu

Keizo Isemura

Koji Doi

Akihito Mori

Kunio Tsuruno

Satoru Kanno

Masatoshi Tanabe

Katsuichi Shimizu

Shigeo Yamagata

Fumio Mikami

Eiichi Motoyama

Takashi Nonaka

Koji Arai

Noriaki Matsui

Katsuhiro Ishido

Yutaka Komiya

Akihiko Sakai

Kiyohisa Sugishima

Masayuki Hirose

Kazuhiro Toyoda

Yoshiki Uchida

Nobuo Matsuoka

Chikai Ono

Satoru Kijima

Kazuo Hamazato

Hiroshi Ueda

Kenji Hara

Kuniyasu Kimura

Yoshihito Osari

Yoshinobu Sato

Toshinori Imura

Hiroaki Tomiyasu

Yuichi Seki

Takeshi Aoyama

Shunsaku Kondo

Kiyoharu Yoshioka

Kazuyuki Shimizu

Junko Kuramochi

Masao Suzuki

Michio Tokunaga

Masashi Oyumi

Shigeru Oyokota

Tsunao Honbo

Junjiro Kitano

Shigeru Kasahara

Junichi Into

Akio Sagawa

Hironobu Uehara

Toshiyuki Tahara

Akihiro Kashiwabara

Junichi Intoh

Junichi Kishimoto

Shigemi Kamimoto

Kuniyasu Kawarada

Jun'ichi Intoh

An image forming apparatus that is capable of reducing unpleasant noise accompanying a preparation operation when a job without a print operation is performed. A second control unit controls an image forming unit. A plurality of lines connecting a first control unit and the second control unit include a first line for transmitting a clock to the second control unit from the first control unit, a second line for communicating a command including a start bit according to the clock, and a third line for controlling a state of the second control unit by the first control unit. The second control unit makes the image forming unit perform a preparation operation when the start bit is in a first state after releasing the sleep state, and makes the image forming unit not perform the preparation operation when the start bit is in a second state after releasing the sleep state.

Image forming apparatus with power saving mode

An image reading apparatus which improved the development efficiency and is capable of reducing the development cost. The image reading apparatus comprises a specific unitand an alignment unit. The specific unithas an CPUthat informs the alignment unitof identification information for identifying an apparatus specification of the specific unit

Image reading apparatus, image forming apparatus incorporating the same, image reading control method therefor, and program implementing the method

An image forming apparatus which is capable of adjusting the color density while improving the printing efficiency. A color density adjustment value-adjusting unit adjusts a color density adjustment value in predetermined adjustment timing so as to keep colors of an image constant. A color density adjustment value-storing unit stores the color density adjustment value in advance. An adjustment timing occurrence-determining unit determines whether or not the adjustment timing occurs during execution of an image forming job. A color density adjustment value-predicting unit predicts the color density adjustment value in the adjustment timing determined to occur, based on the color density adjustment value stored in advance. The color density adjustment value-adjusting unit is adapted to adjust the color density adjustment value based on the predicted color density adjustment value.

Image forming apparatus and method therefor as well as program and storage medium thereof

A simulating system having: a data retrieving device which time-sequentially retrieves a control value which is outputted from a control system in an image forming apparatus to a controlled system and an input value inputted from the controlled system to the control system as a control result; a data storing device which stores a time-series data group including a plurality of control values and the input values corresponding to the control values; and a simulating device which simulates the control result of the image forming apparatus corresponding to the control value outputted to the controlled system in accordance with an algorithm, wherein a correlation between each of the control values and the input value corresponding to each of the control values included in the time-series data group has been implemented.

Simulating system, simulating apparatus, image forming apparatus, and simulating method

A control apparatus used in an image forming apparatus has a CPU board () and a relay board having I/Fs (-) and a CPU (). The I/Fs are connectable with driver boards (-), and have common standards. The CPU detects each connection state of the driver boards to the I/Fs, decides an ID for the relay board according to the connection state, and performs consistency control to secure consistency of control between the driver boards, based on the ID for the relay board. The CPU board is communicatably connected to the relay board. The CPU board obtains the ID for the relay board, and performs control according to the ID for the relay board.

Control apparatus used in image forming apparatus, control method therefor, and image forming apparatus, having a relay device, with identification information obtaining feature for the relay device

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

A control apparatus system which enables reduction of costs and time for development. An image forming apparatus implementing the control apparatus system has an image output section including a plurality of functional units having different functions. The image output section has an ASIC that is provided in each of the functional units, for performing signal processing on an input signal thereto, a communication IC provided in each of the functional units, and a relay board that performs interface matching between each of the functional units and at least one driver circuit board.

Control apparatus system

In an image forming apparatus which requires the user to manually input sheet medium information, (when a bundle of sheets which include a plurality of types of print media are to be printed, the user must manually input setups of the image forming apparatus for each individual print medium. In manual setups by the user, some setups require user's knowledge about print media. When the user has made wrong setups, a print result cannot be obtained under an appropriate control condition Furthermore, when information about a print medium is sensed by the sensor without manual setups, the information cannot be often precisely detect depending on the type and thickness of the print medium, an environment, and the like, and it is consequently difficult to attain optimal image formation. It is an object of this invention to attain optimal image formation, saving user labor and shortening the print time by using a radio tag attached to the sheet medium. An image forming apparatus which forms an image on a sheet medium, has means for reading information from a information holding means, such as a minuscule radio chip, attached to the sheet medium, and means for manually inputting information of the sheet medium, and controls an image forming condition using either information.

Image forming apparatus with control of image formation using read information

An image forming apparatus by which an image formed on a printing medium by image forming means on the basis of image data can be related to the image data includes a controller which prepares management information corresponding to the image data, and controls an operation of the image forming means in accordance with the management information, an adhering unit which adheres, to the printing medium on which the image is formed by the image forming means, a radio identification tag having a transmitting/receiving unit capable of transmitting/receiving data by radio communication, and a data holding unit capable of holding the data, and a communicating module which writes, in the data holding unit of the radio identification tag adhered on the printing medium, the management information for relating the image on the printing medium to the image data, by communicating with the transmitting/receiving unit by radio.

Image forming apparatus and method of controlling image forming apparatus

A reader has a one-pass both-side reading function and comprises a selector which synthesizes in a dot sequential manner image signals from a CCD for reading a front face image and from a contact sensor for reading a rear face image, and transmits both-side image data in the same configuration as that of an I/F which transmits one-side image data. It transfers image information to a printer at high speed without being equipped with a high-capacity memory and without increasing the number of signal lines.

Image reading apparatus

In an image reading apparatus having a light source for illuminating a document, an image sensing element for outputting an electrical signal in accordance with an input light quantity, a first reference member, and a second reference member, shading correction data is acquired. A time since the light source is turned on is measured, and when the measured time does not reach a predetermined time, shading correction data is acquired by a first method using the first reference member. When the predetermined time has elapsed, shading correction data is acquired by a second method using the second reference member.

Image reading apparatus, composite apparatus using the image reading apparatus, and control apparatus and method for the image reading apparatus

An original size sensing method for an apparatus which includes a photoelectric converter for reading an image of an original placed on a platen, and a light source for irradiating the original with light, determines the presence/absence of incidence of ambient light on the basis of an output from the photoelectric converter while the light source is kept off. When ambient light is found to be incident, the method determines the size of an original placed on the platen on the basis of that output from the photoelectric converter, which falls outside the range in which the ambient light is incident, while the light source is kept on.

Sensing of original size

This invention provides an image reading device capable of precise detection of the optical signal over a wide wavelength range, by forming a photoelectric converting unit for converting the visible light into an electrical signal and a photoelectric converting unit for converting the invisible light into an electrical signal, in monolithic manner on a single semiconductor chip.

Image reading device

An image processor includes a first reader which obtains a first signal corresponding to visible information read on an original, and a second reader which obtains a second signal corresponding to invisible information on the original. A comparator compares the first and second signals to discriminate a predetermined pattern on the original.

Method and apparatus for determining a predetermined pattern on an original based on visible and invisible information on the original

An invisible information detection apparatus includes parts that irradiate a light onto a medium, detect infrared light generated from the medium, and judge a specific pattern consisting of a combination of two areas on the medium in accordance with the detection result. One of the areas represents higher reflectance than the reflectance of the medium in substantially the same infrared wavelength region, and the other area represents lower reflectance than that of the medium. An invisible information detection method comprises an irradiation step, a detection step and a judgment step. The judgment step judges a specific pattern of a combination of two areas on the medium in accordance with the result from the detection step. One of the areas represents higher reflectance, and the other area represents lower reflectance, as compared to the reflectance of the medium, in substantially the same infrared wavelength region.

Invisible information detecting apparatus

Growing community of inventors

Kawasaki, Japan

Toshio Hayashi