Image forming apparatus with image distortion correction...

Details Image forming apparatus with image distortion correction... Image forming apparatus with image distortion correction...

2006-05-16

2006-05-16

Chen, Wenpeng (Department: 2625)

Image analysis

Image transformation or preprocessing

Changing the image coordinates

C382S167000, C358S001100

Reexamination Certificate

active

07046861

ABSTRACT:
Image distortion is corrected in a color printer wherein print units for a plurality of colors are aligned to form a color image by superposing images formed by the print units. A quantity of image distortion is detected, and correction data of main scan address and subscan address are calculated and stored according to the detected image distortion for each main scan address. When input color image data are corrected, printing position is corrected in combination of address change with density interpolation. When the correction data exceeds the maximum correction range, the correction data are replaced by the maximum in the correction range for distortion correction. Further, in the image data correction, after the image data are converted to data having a smaller number of gradation levels, the data are delayed according to the serial arrangement of the print units. Then, the delayed data are converted again for printing.

REFERENCES:
patent: 4809216 (1989-02-01), Lai
patent: 5742867 (1998-04-01), Kodama
patent: 5764611 (1998-06-01), Watanabe
patent: 5867285 (1999-02-01), Hirota et al.
patent: 5893009 (1999-04-01), Yamada
patent: 6016386 (2000-01-01), Nosaki et al.
patent: 6115561 (2000-09-01), Fukushima
patent: 6118463 (2000-09-01), Houki et al.
patent: 6215512 (2001-04-01), Imaizumi et al.
patent: 6323955 (2001-11-01), Kanai et al.
patent: 6441915 (2002-08-01), Imaizumi et al.
patent: 10148779 (1998-06-01), None

Affiliated with

Also associated with

Rating

Image forming apparatus with image distortion correction... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image forming apparatus with image distortion correction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus with image distortion correction... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3530803