Patent ID: 8149454
Filing Date: 2012-04-03
Classification: H04N

Abstract:
1. A method of operating a color printer comprising: transforming input color print data to printer color space primary colors using a predetermined conversion color table, the printer color space primary colors including non-black primary colors; if the printer is operating in a first resolution mode, then adjusting the non-black primary color values associated with the printer color space primary colors using a first color table with contributions from a first one-dimensional gray balancing related primary color TRC, a first one-dimensional primary component related primary color TRC, and a first one-dimensional secondary component related primary color TRC; if the printer is operating in a second resolution mode, then adjusting non-black primary color values associated with the printer color space primary colors using a second color table with contributions from a second one-dimensional gray balancing related primary color TRC, a second one-dimensional primary component related primary color TRC, and a second one-dimensional secondary component related primary color TRC; whereby the same conversion color table is employed when the printer is operating in the first resolution mode and the second resolution mode, accordingly; and a color output produced using the second color table in the second resolution mode substantially colorimetrically matches a color output produced in the first resolution mode, wherein: