Method for color adjustment and control in a printing press

Details Method for color adjustment and control in a printing press Method for color adjustment and control in a printing press

1992-04-28

1993-07-06

Fisher, J. Reed

Printing

Multicolor

Processes

101365, 101DIG45, B41F 3104

Patent

active

052244210

ABSTRACT:
A method for color adjustment and control in a printing press wherein the density spectra of individual process colors as well as the density spectrum of the color of paper are stored with given fractional percentages. The density spectra of at least one measuring point per ink zone on a printing copy and at respective points on a printed product are then measured. The density spectra measured on the printing copy and the printed product are then expressed as a linear combination of the density spectra of the individual process colors and the density spectrum of the color of the paper multiplied by fractions, the fractions being calculated so that the density spectra of the printing copy and the printed product are approximated through the linear combination. In the case of a deviation of the fractions between the printed product and the printing copy, the positions of the ink keys are adjusted so that a match of the density spectra is achieved.

REFERENCES:
patent: 3185088 (1965-05-01), Norton
patent: 4233663 (1980-11-01), Sugawara et al.
patent: 4901254 (1990-02-01), Dolezalek et al.
patent: 4967379 (1990-10-01), Ott
patent: 4975862 (1990-12-01), Keller et al.
patent: 4992861 (1991-02-01), D'Errico
R. Brand and T. Celio, "A New Color Control System For Gravure", ERA annual meeting 1987.
Tino Celio and Rudolf Brand, "On-Press Colorimetric Control For Gravure Publication And Packaging Presses", dated Apr. 1988.
Berthold K. P. Horn, "Exact Reproduction of Colored Images"--Computer Vision, Graphics and Image Processing, Feb. 3, 1983, pp. 135-167.
Harris Graphics Densicontrol Preset Inker System Brochures.

Affiliated with

Also associated with

Rating

Method for color adjustment and control in a printing press does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for color adjustment and control in a printing press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for color adjustment and control in a printing press will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1683189