Print device and print processsing method
AssigneeRicoh Company, Ltd.
InventorMasato Takahashi
Life of this patent
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Abstract
A printing apparatus of the present invention includes a dither processing unit which converts multi-value data of C (cyan), M (magenta), and Y (yellow) into binary CMY data, and further includes a black generation processing unit which generates a gray plane by a logical product between C, M, and Y of the binary CMY data, and generates K (black) at positions of some of gray pixels of the gray plane according to a probability responsive to a density of the gray pixels in the gray plane while refraining from generating K at positions of remaining gray pixels.
Claims12
A printing apparatus, comprising:
- a dither processing unit which converts multi-value data of C (cyan), M (magenta), and Y (yellow) into binary CMY data;
- and
- a black generation processing unit which generates a gray plane by a logical product between C, M, and Y of the binary CMY data, and generates K (black) at positions of some of gray pixels of the gray plane according to a probability responsive to a density of the gray pixels in the gray plane while refraining from generating K at positions of remaining gray pixels.
A method of printing processing, comprising the steps of:
- generating a gray plane by a logical product between C, M, and Y of binary CMY data that is generated from multi-value data of C (cyan), M (magenta), and Y (yellow);
- and
- generating K (black) at positions of some of gray pixels of the gray plane according to a probability responsive to a density of the gray pixels in the gray plane while refraining from generating K at positions of remaining gray pixels.
Dependencies are inferred from the claim text.