Printing apparatus, computer-readable storage medium,...

Details Printing apparatus, computer-readable storage medium,... Printing apparatus, computer-readable storage medium,...

2007-01-30

2007-01-30

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S019000, C358S001200, C358S001900

Reexamination Certificate

active

10970728

ABSTRACT:
A printing apparatus has: ink-ejecting section units, each ink-ejecting section unit having ink-ejecting sections each being provided for ejecting an ink of a different color based on a gradation value that has been converted; a memory for storing darkness-correspondence information that correlates, for each ink color, darkness of images each printed using a different one of predetermined ink-ejecting sections each having an ink-ejection amount different from one another, and a darkness of an image printed using a reference ink amount; and a converting section for converting, for every pixel, a gradation value of image data to be printed, based on a correlation in the darkness-correspondence information between a darkness of an image printed using the predetermined ink-ejecting section that ejects an amount of ink that corresponds to an average value of the ink-ejection amounts respectively ejected from the ink-ejecting sections, and the darkness of the image printed using the reference ink amount.

REFERENCES:
patent: 5729259 (1998-03-01), Gotoh et al.
patent: 5767876 (1998-06-01), Koike et al.
patent: 1 203 665 (2006-05-01), None
patent: 2000-22954 (2000-01-01), None
patent: 2001-1510 (2001-01-01), None

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