Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2007-08-28
2007-08-28
Meier, Stephen (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
C358S001200
Reexamination Certificate
active
10952791
ABSTRACT:
An ink jet printing method is provided which, although it uses an ink jet print head with a fixed small ink ejection volume, can form an image with a desired density by performing data processing and printing at a lower pixel density. The dot arrangement pattern that determines the presence or absence of a printed dot in each of a plurality of element areas making up each pixel is allocated to the individual pixels according to their grayscale level. Then the printing dots are divided into a plurality of scans of the print head. At this time, for those pixels having a predetermined grayscale level, a plurality of dots are printed overlappingly in each of predetermined element areas of these pixels. This arrangement allows a greater number of dots than is determined by the allocated dot arrangement pattern to be printed in these pixels according to the grayscale level.
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Ide Daisaku
Maru Akiko
Masuyama Atsuhiko
Nishikori Hitoshi
Tajika Hiroshi
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Garcia, Jr. Rene
Meier Stephen
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