Method of calculating correction value and method of...

Details Method of calculating correction value and method of... Method of calculating correction value and method of...

2009-03-27

2011-12-13

Martin, Laura (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S019000

Reexamination Certificate

active

08075077

ABSTRACT:
A method of calculating a correction value including: forming a first test pattern on a medium by using a first nozzle group and a second nozzle group and a third nozzle group of a liquid discharging device, forming a second test pattern on the medium, setting the first test pattern in a scanner, setting the second test pattern in the scanner, acquiring a read-out result of a portion formed by the second nozzle group, and acquiring a read-out result of a portion formed by the third nozzle group from a read-out result of the second test pattern as a fourth read-out gray scale value, converting the first read-out gray scale value, the second read-out gray scale value, the third read-out gray scale value, and the fourth read-out gray scale value into corrected read-out gray scale values, and calculating a correction value based on the corrected read-out gray scale values.

REFERENCES:
patent: 6390583 (2002-05-01), Kato et al.
patent: 7950768 (2011-05-01), Yoshida et al.
patent: 2006-305952 (2006-11-01), None

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