Image analysis – Color image processing – Color correction
Patent
1996-09-20
2000-05-23
Nguyen, Madeleine
Image analysis
Color image processing
Color correction
382255, 358518, G06K 900, G03F 308
Patent
active
06067377&
ABSTRACT:
An image forming apparatus having a correcting function for preventing toner from scattering around edge portions of line images. The image forming apparatus includes an image paper sheet formed from an original image for testing, a line width extracting unit for reading the image paper sheet for correcting and color-by-color extracting a state of toner scattering around edge portions of the line image. Color-by-color correcting data is then calculated based on the color-by-color extracted information. A line width correcting unit accomplishes correction based on the calculated result when subsequently forming ordinary images.
REFERENCES:
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patent: 5339150 (1994-08-01), Hubble, III et al.
patent: 5438437 (1995-08-01), Mizoguchi et al.
patent: 5481340 (1996-01-01), Nagao et al.
patent: 5734801 (1998-03-01), Noguchi
Nguyen Madeleine
Ricoh & Company, Ltd.
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