Patent ID: 7180625
Filing Date: 2007-02-20
Classification: G06K,H04N

Abstract:
1. A printer controller configured to generate pattern data for use in a tone adjusting process, said printer controller comprising: a selecting unit configured to select a dot size of a reference tone pattern by varying a number of pixels forming each dot of the reference tone pattern; and a generating unit configured to generate and output to a printer device said reference tone pattern having the dot size selected by said selecting unit and tone adjusting patterns having tones of a predetermined range including a reference tone of said reference tone pattern such that the printer device prints the reference tone pattern and the tone adjusting patterns on a recording medium for evaluation in the tone adjusting process, wherein said generating unit is configured to generate said reference tone pattern and the tone adjusting patterns such that said reference tone pattern includes a central portion and reference sector portions arranged intermittently around said central portion, the tone adjusting patterns include adjusting sector portions arranged intermittently around said central portion and each respectively located between two of the reference sector portions, whereby each of the adjusting sector portions has three sides respectively adjacent to said central portion and two reference sector portions.