Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2007-01-30
2007-01-30
Pham, Hai (Department: 2853)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S249000, C347S250000
Reexamination Certificate
active
10835745
ABSTRACT:
A frequency modulation device for use in an image forming apparatus. The image formation apparatus includes an image carrier and a laser device for scanning the image carrier along a plurality of scan lines. Each scan line is divided into segments having segment boundaries in which the same segment boundary in adjacent scan lines are offset. The frequency modulation device generates frequency data for use in modulating the input image data, which is utilized by the laser device to scan the image carrier, which permits output of an electrophotograph of high image quality by suppressing segment boundaries caused by moiré fringes or color shifting to below a level at which such boundaries are not visually detectable.
REFERENCES:
patent: 5822105 (1998-10-01), Kodama et al.
patent: 5933184 (1999-08-01), Ishigami et al.
patent: 6052143 (2000-04-01), Yoshino et al.
patent: 6157400 (2000-12-01), Genovese
patent: 2004/0174428 (2004-09-01), Seki et al.
patent: H02-282763 (1990-11-01), None
patent: H05-203889 (1993-08-01), None
patent: H09-218370 (1997-08-01), None
Canon Kabushiki Kaisha
Canon U.S.A. Inc I.P. Div
Martinez, Jr. Carlos
Pham Hai
LandOfFree
Frequency modulator for modulating image data based on... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency modulator for modulating image data based on..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency modulator for modulating image data based on... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3766440