Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Reexamination Certificate
2005-11-01
2005-11-01
Nolan, Jr., Charles H. (Department: 2854)
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
C400S120010
Reexamination Certificate
active
06960036
ABSTRACT:
By using an ink jet head, which has for each color two parallel columns of nozzles arranged side by side in the main scan direction and shifted from each other by one-half the pitch at which the nozzles are arranged in each column, odd-numbered rasters and even-numbered rasters making up an image are printed by the two nozzle columns. The registration between the odd- and even-numbered rasters is secured during the printing to produce an image with high print quality. For that purpose, the ink ejection timing between the two raster groups is shifted by a predetermined interval to form a plurality of adjustment patterns; the adjustment patterns printed are checked and, according to the check result, an adjustment value for the ink ejection timing between the two ink nozzle columns is entered; and the entered adjustment value is stored to be reflected on the actual printing operation. To facilitate the adjustment pattern check, the plurality of adjustment patterns have a dot distribution with a blue noise characteristic at a resolution at which the printing apparatus can print.
REFERENCES:
patent: 4920355 (1990-04-01), Katerberg
patent: 5343231 (1994-08-01), Suzuki
patent: 5898443 (1999-04-01), Yoshino et al.
patent: 5949965 (1999-09-01), Gondek
patent: 6089697 (2000-07-01), Tajika et al.
patent: 6113210 (2000-09-01), Gotoh et al.
patent: 6375297 (2002-04-01), Hayashi et al.
patent: 6600573 (2003-07-01), Shaked et al.
patent: 0 540 245 (1993-05-01), None
patent: 0 616 896 (1994-09-01), None
patent: 0 895 869 (1999-02-01), None
patent: 0895869 (1999-09-01), None
patent: 6-320732 (1994-11-01), None
patent: 7-81190 (1995-03-01), None
patent: 7-242025 (1995-09-01), None
patent: 11-48587 (1999-02-01), None
patent: 11-77991 (1999-03-01), None
patent: WO 02/05545 (2002-01-01), None
Robert Ulichney, “Dithering with Blue Noise”, Digital Halftoning, Chapter 8 pps. 233-238.
Edamura Tetsuya
Fujita Miyuki
Kawatoko Norihiro
Konno Yuji
Maeda Tetsuhiro
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Nolan, Jr. Charles H.
LandOfFree
Adjustment method of printing positions, a printing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustment method of printing positions, a printing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustment method of printing positions, a printing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3463096