Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2005-09-20
2005-09-20
Stephens, Juanita D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
C400S074000
Reexamination Certificate
active
06945626
ABSTRACT:
In a multi-valued printer that uses discontinuous index patterns, if a tone correction table is generated using sampled density patches, a table which is different from a table to be obtained and has no inflection point is obtained, and the print density characteristics after tone correction suffer discontinuity. To solve this problem, an output gamma table used to output measurement patches is set to linearly correct the printer print characteristics. Patches are output and their densities are measured. A reverse table of a “signal value—density” table is generated, and is smoothed using a recursive curve. The smoothed reverse table is finely adjusted to generate an intermediate output gamma table. The generated table undergoes index component correction, thus generating a tone correction table.
REFERENCES:
patent: 6203133 (2001-03-01), Tanaka et al.
patent: 6832825 (2004-12-01), Nishikori et al.
patent: 2001/0007599 (2001-07-01), Iguchi et al.
patent: 2002/0048031 (2002-04-01), Suwa et al.
patent: 2002/0154326 (2002-10-01), Tsuchiya et al.
patent: 2-167755 (1990-06-01), None
patent: 8-2659 (1996-01-01), None
patent: 9-46522 (1997-02-01), None
Nagoshi Shigeyasu
Nakatani Akihiko
Tsuchiya Okinori
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Stephens Juanita D.
LandOfFree
Correction table generation method and method of controlling... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Correction table generation method and method of controlling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correction table generation method and method of controlling... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3446064