Canon Kabushiki Kaisha

Toyokazu Uda

Susumu Sugiura

Makoto Takaoka

Shigetada Kobayashi

Kentaro Matsumoto

Yoshinobu Mita

Junichi Shishizuka

Mitsumasa Sugiyama

Hiroyuki Nakanishi

Yoji Kaneko

Yukari Shimomura

Katsutoshi Hisada

Masami Fukumoto

Masami Uda

A printer server connectable to a plurality of printers includes a receiver for receiving print data from an external apparatus, a first discrimination unit for discriminating a representation by which the received print data is described, and a selection unit for selecting, from the plurality of printers, a printer to print an image corresponding to the received print data. A second discrimination unit of the printer server discriminates whether the selected printer is capable of processing print data in the discriminated representation. When the selected printer is not capable of processing print data in the discriminated representation, a controller of the printer sever converts the received print data into print data in another representation and transmits the print data in the other representation. The controller transmits print data in the discriminated representation when the selected printer is capable of processing print data in the discriminated representation. The apparatus also includes a status receiver for receiving, from the selected printer, status information indicating that transmitting print data has been printed normally. A status sending unit of the apparatus sends the status information to the external apparatus.

Printing apparatus and printing method for converting print data to a representation supported by a selected printer

A variety of parameters for a scanner printer are set from a host computer on a network by arranging a scanner printer server system composed of the host computer and the scanner printer server connected to the network, and a scanner and a printer connected to the scanner printer. The scanner printer server system has a bidirectional communication channel formed between the scanner, the printer and the scanner printer server, wherein characters, graphics and a method of transferring image are instructed from the host computer and the data is transferred by the instructed transference method.

Scanner printer server

Scanner printer server for selectively controlling a scanner and a

The invention concerns a color image communication apparatus, which comprises scan conversion means for converting n-level image data received in a raster scan system via a communication line to data in a shuttle scan system, multi-level conversion means for converting color n-level data obtained from the scan conversion means for multi-level data, and color conversion means for converting color characteristics of multi-level data obtained from the multi-level conversion means from color characteristics for a communication line to color characteristics of output color recording means. The invention also concerns a color image communication apparatus, which comprises means for generating shuttle system color signal, color conversion means for converting the color signal to signal matched to standard color characteristics for a communication line, n-level conversion means for converting the converted color signal from the color conversion means to n-level signal, and means for performing data scan conversion of the n-level data from shuttle scan system to raster scan system and sending out the raster scan system n-level data to the communication line.

Color image communication apparatus and method having two modes

Scanner printer server and method for selectively outputting scanned

An image processing apparatus for recording image data using an ink jet recording method comprises: an ink jet nozzle to eject an ink droplet and deposit onto a paper; a controller to control the ink jet nozzle so as to enable the recording interval when the ink droplet is deposited on the same position on the paper a plurality of times; a supply circuit to supply image data to the ink jet nozzle; and a distinction circuit to discriminate whether the input image data is a half tone image or a diagram image, wherein this controller controls the recording interval in accordance with the result of the discrimination. With this apparatus, by superposing the recording dots on the same position on the paper in accordance with the binary image data, gradations and graininess can be improved by a simple structure.

Image processing method utilizing multiple binarizing and recording

A color image communication apparatus can switch between a copy mode and a communication mode. In the communication mode, color space standardization conversion of objective color image data is performed, while in the copying mode, color space standardization conversion of the objective image data is not performed.

Color image communication apparatus and method

It is provided an image communication apparatus which comprises multi-level generation section for generating multi-level data from received image data, color conversion section for color-converting the multi-level data from the multi-level generation section, and setting section for setting a single color mode, in which the received image data is dealt with as single color data irrespective of the color conversion section, when it is determined by communication protocol that the communication mode is the single color mode, so as to ensure satisfactory communication even with a single color image.

Image processing method for superposing plural dots on a recording

A method for halftone image recording, wherein dots are formed using two or more concentrations of ink, to express different image densities. Each picture element may comprise a plurality of cells, different predetermined members and patterns of which are actually printed in, to express different gradations. Different such patterns may be used for each ink concentration. Several such patterns, using only thin ink, may, for example, be used to express lower densities, several others, using only thick ink, for high densities, and still others, using dots of thin ink and dots of thick ink, for intermediate densities. For color image recording, different concentrations and different members of concentrations can be used for different colors.

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Yokohama, Japan

Toyokazu Uda