Canon Kabushiki Kaisha

Canon Denshi Kabushiki Kaisha

Other

Yoshifumi Okamoto

Satoshi Nagata

Nobuhiko Sato

Tetsuya Morita

Akihiro Shimura

Shunya Mitsuhashi

Masaki Unishi

Takanori Nishijima

Masayoshi Suzuki

Makoto Dohi

Yoji Furuya

Hisashi Sakamaki

Takashi Machida

Masaru Igarashi

Yukio Inagi, Isaka

Toshihiko Ikeno

Koichiro Akimoto

Yasuhito Suzuki

Kazuyuki Honda

Tsumori Sato

Yuki Morooka

Takashi Yotsuyanagi

Kiyoyuki Hattori

Shinji Beppu

Sumihiko Arima

Ryota Fujikawa

Tomohiro Tomaru

Kanata Shirotori

Yusuke Akaike

A coupling/uncoupling device includes a columnar member configured by a divided pair of semicircular members, and a pair of coupling members forming a circular holding section that holds the columnar member. The circular holding section includes a circular inner surface section with which an outer circumferential surface of the columnar member is in slide contact, the circular inner surface section being formed from inner circumferential surfaces of a semicircular section in one coupling member and a semicircular section in the other coupling member. The columnar member is configured to be rotatable in both clockwise and counterclockwise directions along the circular inner surface section about a reference position where a contact surface of the pair of coupling members and a dividing surface of the columnar member are flush with each other.

Coupling/uncoupling device

A sheet feeder comprises a sheet stacking unit which stacks sheets, a sheet pickup unit which picks up a sheet from one side of the stacked sheets on the sheet stacking unit, a sheet separating and feeding unit which separately feeds sheets one by one to a conveyance path, an orientation holding unit which holds a feed orientation of a sheet, and a biasing unit which biases the orientation holding unit from a retracted position to a projecting position. A projection amount of the orientation holding unit from an inclined surface increases as the number of stacked sheets decreases, and the projection amount from the inclined surface decreases as the number of stacked sheets increases.

Sheet feeder, image reading apparatus, and image forming apparatus

A main server and a mirror server hold the same content. A server switching apparatus sets only one of the web servers to be active. In the case where the mirror server has not been attacked in an immediately-previous operating period, the server switching apparatus switches from the main server to the mirror server. Upon receiving a request from a client computer, the server switching apparatus transfers the request to the active web server. The active web server then sends the requested content.

Apparatus for switching between multiple servers in a web-based system

An information processing apparatus includes an acquiring unit for acquiring information stored in a memory of a printing device connected through a bidirectional interface, and a selecting unit for selecting a printer driver corresponding to the information acquired by the acquiring unit from a plurality of printer drivers on the basis of the information.

Information processing apparatus

An information processing apparatus which outputs data to an electronic device. Information indicating a data processing ability of the electronic device is first obtained, whereupon data processing means is controlled so as to process the data output to the electronic device depending on the data processing ability indicated by the information so obtained.

Information processing apparatus and output apparatus

An information processing apparatus includes an acquiring unit for acquiring information from a printer connected through a bidirectional interface, and a control unit for controlling a display status of a virtual printer, which is displayed on a display screen and represents the printer, on the basis of the information acquired by the acquiring unit. An output apparatus includes a setting unit for setting an operating environment, and a changing unit for changing operating environment information set by the setting unit on the basis of information acquired from an information processing apparatus connected through a bidirectional interface.

An information processing apparatus acquires identification information which specifies an interpreting program for interpreting a device control language, the specified interpreting program being operable in an external device connected to the information processing apparatus. It is discriminated whether a selected first control program corresponds to the device control language interpreted by the specified interpreting program. If it is discriminated that the selected first control program does not correspond to the device control language interpreted by the specified interpreting program, a second control program corresponding to the device control language interpreted by the specified interpreting program is selected from a plurality of control programs. Data is output to the external device using the first control program or, if it is discriminated that the first control program does not correspond to the device control language, the selected second control program.

Information processing apparatus with device control language based program selection

An image data control apparatus includes a memory for storing image data and a reader for reading the image data from the memory. The reader can operate in a first mode for erasing the image data in association with the reading of the image data from the memory and can operate in a second mode for restoring the read image data in the storage means in association with the reading of the image data from the memory.

Image data control apparatus

An information processing apparatus for communicating information with an information device. The information processing apparatus accesses virtual device image data representing an image of the information device, obtains status information representing a status of the information device from the information device through a bidirectional interface, and controls a display to display a virtual device image of the information device based on the accessed virtual device image data and the obtained status information. The virtual device image is a visual representation of the physical appearance of the information device in the status represented by the obtained status information.

A printing system includes a host computer and a printer. The host computer includes a memory which store process steps that are executable by a processor, and a processor. The processor executes the process steps stored in the memory (,) to divide encoded image data in a page of encoded image data into blocks, each block having a size which is less than a storage capacity of a buffer on a printer, and (,) to transmit the blocks of encoded image data to the printer. The printer includes a memory which stores process steps that are executable by a processor, and a processor. The processor executes the process steps stored in the memory (,) to store a predetermined amount of encoded image data in a buffer, (,) to control a printer engine to print images based on the encoded image data stored in the buffer, and (,) to store additional encoded image data, including blocks of the encoded image data, in the buffer in place of the encoded image data for which images have been printed.

Printing system for dividing a page into blocks

When a host computer makes a printer print a document, the driver on the host computer sends character codes of characters that appear for the first time in that document and corresponding character images to the printer in advance, and registers them. After this process, the driver transmits, to the printer, characters in the document to be printed as character codes, and data other than characters as mapped image. The printer maps an image on a page memory, maps characters as images with reference to the registered character codes and character image, and superposes the mapped character images on the image mapped on the page buffer. The printer prints the image on paper. The printer can divide an image into bands, and can map the image in units of bands, in place of pages. With this arrangement, the memory capacity can be reduced, and bands having identical contents or blank bands can be processed as codes.

Printing system

A printing apparatus and a printing processing method are provided in which content of print information is discriminated. A variable is initialized if the result of discrimination indicates the start of a printing job, and the variable is counted up of the result of discrimination indicates start of the next page. In a case where trouble such as jamming occurs during processing of this print information, at which page from the start of printing this trouble occurred is calculated from the variable, and the page number obtained is outputted upon being incorporated in information indicative of the fact that trouble has occurred. As a result, it is possible to output information indicating at which page, from the start of a printing job, trouble such as jamming occurred.

Printing apparatus and printing processing method

An information processing apparatus comprises acquiring means for acquiring a memory capacity of a printer connected through a bi-directional interface, compare means for comparing the memory capacity acquired by the acquiring means with a capacity of data to be outputted to the printer, and determination means for determining a memory size of a memory of the printer in accordance with the comparison result. An output apparatus comprises receiving means for receiving memory size information determined by a capacity of data to be outputted from an information processing apparatus connected through a bi-directional interface and a capacity of a memory for storing the data, from the information processing apparatus, and setting means for dynamically setting a size of the memory for storing the data in accordance with the memory size information received by the receiving means.

There is disclosed a data processing apparatus capable of rotating image data in the block unit, for achieving faster process with reduced memory capacity. The data processing apparatus comprises recognition means for recognizing the size of data of a bit map format to be compressed and the size rotatable by rotation means, division means for dividing the bit map-formatted data to be compressed, based on the size of the bit map-formatted data and the size rotatable by the rotation means recognized by the recognition means, compression means for compressing the bit map-formatted data divided by the division means, and transfer means for transferring the bit map-formatted data, compressed by the compression means, to an output device.

Data processing apparatus, data processing method, memory medium storing

An output control method includes the step of outputting a predetermined portion of data obtained by first direct memory access as last data of one line, checking whether the data obtained by the access includes data other than the last data, performing direct memory access again with respect to data at the same address as that in the previous access as start data of a line next to the previous line when it is determined that the obtained data includes data other than the last data, and outputting a predetermined portion of the data obtained by the second access as the start data. An output control apparatus for this method is also disclosed.

Growing community of inventors

Yokohama, Japan

Yoshifumi Okamoto