Ricoh Company, Ltd.

Hitomi Hanyu

Yoshiaki Hanyu

Takashi Sato

Hiroyuki Matsushima

Naofumi Ueda

Kyoko Saito

A color adjustment system includes circuitry to register job data for requesting printing a document file in a memory, register color sample data associated with the job data in the memory, cause a printing apparatus to print out the document file corresponding to the job data as a first printed matter, cause a reading apparatus to read the first printed matter to acquire first read image data, and generate an input profile based on the first read image data and the color sample data.

Color adjustment system, color adjustment method, and color adjustment apparatus

An image storage device includes a storing unit, a background recognizing unit, an attribute-information generating unit, and an image-data processing unit. The storing unit stores therein image data and first attribute information for each pixel. The background recognizing unit recognizes a background of the image. The attribute-information generating unit generates second attribute information for each pixel based on the background of the image recognized by the background recognizing unit. The image-data processing unit processes the image data based on the second attribute information generated by the attribute-information generating unit.

Image storage device, image storage system, method of storing image data, and computer program product for image data storing

In an image formation apparatus, a matching engine converts the color in image data for a color image into an output color, a specific color determining device determines whether the color in the image data is a color (specific color) indicated by a point on a straight line connecting between an origin point and a point indicating an ink color in a color space, and a color profile interpolates the image data determined as the specific color only with other specific colors on the straight line where the specific color is located.

Image formation apparatus and method, and computer product

An apparatus for printing a color image includes a printer driver which processes input image data to generate printable image data, and further includes one or more color profiles which are used by the printer driver to perform color matching on the input image data in a normal mode, wherein the printer driver uses one or more toner-saving-purpose profiles to perform color matching on the input image data in a toner saving mode, the one or more toner-saving-purpose profiles being specifically designed to reduce a toner amount on a printed color image.

Color printing apparatus that reduces toner amount

A printer with a tonality correction capability includes test pattern forming means for forming a particular test pattern for each tonality processing method. Image reading means reads the test pattern formed by the test pattern forming means. The test pattern read is compared with data representative of a target pattern to thereby execute tonality correction matching with a tonality processing method to be used. The printer obviates manual operation needing expertness and allows even the user of the printer to correct the variation of tonality ascribable to a difference in the type of a printer and aging.

Printer with a tonality correction capability

A method and apparatus proecsses a dot image formed of a plurality dots, each dot having a density level. In the method and appratus, a dot pattern is extracted from the dot image, which dot pattern being formed of an observation dot and dots surrounding the observation dot, it is tdetermining, based on comparison between the extracted dot pattern and predetermined reference patterns, whether or not the observation dot in the dot pattern is either a dropout dot or a projection dot, a density level of the observation dot is changed to a first density level corresponding to the dropout dot when it is determined that the observation dot is the dropout dot, and a density level of the observation dot is changed to a second density level corresponding to the projection dot when it is determined that the observation dot is the projection dot.

Image processing method and apparatus

A graphics accelerator decides pixel densities using an anti-aliasing process for left and right edges of a figure in an image, and for sending resulting pixel density data to a frame memory. The apparatus includes a memory read/write controller inputs a contribution ratio, a density value, a 'y' coordinate for a raster line, a start coordinate x.sub.1, and an end coordinate x.sub.2, and sends an address to the frame memory. A LUT provides pixel densities based on the contribution ratio and the density value. Three contiguous pixels' densities are latched, including densities for a middle pixel and two outer pixels. A comparing processor, decides a resulting pixel density corresponding to the middle pixel by comparing the densities of the three contiguous pixels, and deciding the resulting pixel density as being an intermediate value between the densities of the two outer pixels if the middle pixel's density is not between the densities of the two outer pixels, but deciding the resulting pixel density as being the density of the middle pixel if the middle pixel's density is between the densities of the two outer pixels. Identification densities for identifying edges of the figure are generated in the second position before the left edge of the figure and in the second position after the right edge of the figure.

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Kanagawa, Japan

Hitomi Hanyu