Canon Kabushiki Kaisha

Cannon Kabushiki Kaisha

Takahiro Moro

Koji Yamada

Kazuyoshi Sumiuchi

Masahiro Nagatani

Yuji Akiyama

Takeshi Matsushita

Katsumi Masaki

Atsushi Ushiroda

Takatoshi Ohta

Nobuo Ohnuma

Yoko Hirosugi

Takafumi Sawaki

Ken Onodera

Koiji Yamada

When a user enters control information for controlling a printing device, the information is stored in a user information storage unit. All combinations of items of the control information capable of being set by the user and values of items incapable of being set by the user, these having been selected so as to be the optimum values for the combinations, are stored as preset values in a combined information storage unit. An information storage unit compares a value in the user information storage unit with a value in the combined information storage unit. If a combination for which agreement is achieved is found in the combined information storage unit, this value is stored in a printing information storage unit and transmitted to the printing device. Thus, an optimum value can be selected and sent to the printing device even with regard to an item incapable of being selected by the user.

Printing control apparatus and method

Printing control apparatus and method for changing a setting based on a change in another setting

In this invention, when a printer driver uses data obtained by referring to a table, the printer driver searches a first table of two, first and second tables to obtain a search condition of the second table. The printer driver searches the second table using the obtained search condition to obtain required data. When another search condition is added, the search condition is added to the first able, and data corresponding to the added search condition is added to the second table.

Print control apparatus and method

An image processing apparatus having a first black generating unit for generating a black component from input image data of signals representative of a plurality of color components, a color correcting unit for correcting the colors of the signals representative of the plurality of color components and a signal representative of the black component and outputting the color corrected signals representative of the plurality of color components, and a second black generating unit for generating a signal representative of a black component from the color corrected signals.

Image processing apparatus and method

The present invention relates to a recording apparatus which has recording sheet discriminating means for discriminating a kind of the recording sheet to be supplied to the recording means, a printer driver for controlling a recording operation of the recording means on the basis of recording sheet an information of conforming to the kind of the recording sheet discriminated by the recording sheet discriminating means, judging means for judging whether the recording sheet of which the kind has been discriminated by the recording sheet discriminating means is included in of a preset specific kind recording sheet, and recording sheet information inputting means for inputting the information of the recording sheet to be supplied to the recording means when it is judged by the judging means that the recording sheet of which the kind has been discriminated is not included in the specific kind of recording sheets.

Recording apparatus

An image processor includes an input unit which inputs color image data, and a color correction unit which effects under color removal processing and black generation processing on the color image data conforming to the characteristic of a recording medium, and outputs data indicative of a plurality of color components including a black component. The color correction unit effects the under color removal processing and the black generation processing so that the total output level of the data indicative of the plurality of color components including the black component may assume a value conforming to the color image data.

A noise reduction apparatus in which decoded image data is input to a block division circuit which divides the input image into blocks each consisting of N.times.N pixels. A process block determination circuit determines the presence/absence of an edge from estimated values of four corner points of an objective block divided by the block division circuit. The process block determination circuit determines the size of a process block in accordance with the determination result. A linear interpolation circuit performs linear interpolation of the process block determined by the process block determination circuit, and outputs corrected image data.

Image processing method and apparatus

An image processing apparatus of a digital copying machine, a digital facsimile, or a printer comprises an input unit to input multi-level data; an arithmetic operating circuit for adding error data to the input multi-level data and for calculating error correction data; a selector to select a predetermined dot pattern on the basis of the error correction data; an error calculation circuit to calculate a difference between the representative value for each dot pattern and the error correction data; a storage memory for storing the difference as error data into a memory; and a dot pattern memory in which dot patterns corresponding to a plurality of colors have been stored. The input unit inputs multi-level image data of a plurality of colors and the selector selects the dot pattern whose dot arrangement differs in accordance with the color of the multi-level image data.

Image processing method and apparatus including an error calculation for

An image processing apparatus of a digital copying apparatus, digital facsimile, printer, or the like comprises an input unit to input multi-level data, an arithmetic operation circuit for adding error data to the input multi-level data and calculating error correction data, a selector to select a predetermined dot pattern on the basis of the error correction data, an error calculation circuit to calculate a difference between a representative value for each dot pattern and the error correction data; and a storing circuit for storing the difference as error data into a memory. The selector comprises a level classification threshold value storage memory in which threshold values to classify the error correction data into levels have been stored, and a data level determination circuit for classifying the error correction data into levels on the basis of the value of the error correction data and the value stored in the level classification threshold value storage memory.

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Wako, Japan

Takahiro Moro