Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2005-01-11
2005-01-11
Nguyen, Thinh (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
06840599
ABSTRACT:
A method for processing an image in a printer, which can effectively carry out a conversion operation by comparing quantities of light components for R (Red), G (Green) and B (Blue) associated with each pixel to be converted when a two or more-color image is converted into a two-color image, and can decide conversion colors by applying a regular rule to all possible cases when the conversion colors are decided, such that an excellent conversion result can be achieved. In the method, a primary color and a secondary color are set as printable colors in the printer and an original image is inputted. Color difference values associated with the primary color, the secondary color and a white color are produced on an original image pixel-by-pixel basis, and a corresponding pixel color of the original image is converted into the primary, secondary or white color associated with a smallest color difference value.
REFERENCES:
patent: 5740333 (1998-04-01), Yoh et al.
patent: 6206504 (2001-03-01), Payne
patent: 6502923 (2003-01-01), Payne
patent: 6523937 (2003-02-01), Payne
Korea Printing Systems Co., Ltd.
Nguyen Thinh
Webb Ziesenheim & Logsdon Orkin & Hanson, P.C.
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