Generation of dither matrix

Details Generation of dither matrix Generation of dither matrix

2011-06-14

2011-06-14

Lee, Thomas D (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001800, C358S001900, C358S003060, C358S534000

Reexamination Certificate

active

07961355

ABSTRACT:
A printing method includes: providing a print head that includes a plurality of nozzle arrays for ejecting at least 3 colors of inks; performing a halftone process with a dither matrix on image data to generate dot data that represents a state of dot formation at each pixel. The dither matrix includes a single reference matrix that is set by determining threshold values in the reference matrix based on a predetermined index value being calculated based on an arrangement pattern of at least two colors of dot groups among M colors (M is an integer of at least 3 and less or equal to N) of dot groups among the at least N colors of dot groups, with respect to at least some tone values among the input tone values.

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