Process and apparatus for the regulation of ink feed controls in

Details Process and apparatus for the regulation of ink feed controls in Process and apparatus for the regulation of ink feed controls in

1984-10-29

1987-04-21

Lall, Parshotam S.

Boots, shoes, and leggings

101365, 101335, 250559, G01J 346, B41F 3300

Patent

active

046601597

ABSTRACT:
Printed products and their respective corresponding printing plates are divided into a plurality of image elements. For each image element the surface coverage is determined by photoelectric measurements; a reference reflectance value is then calculated from these measurements, taking into consideration such parameters as the printing characteristic. These reference reflectance values are compared with the actual reflectance values measured on the printed products and the results of the comparison are evaluated to from a quality measure and to calculate control values for the ink feed devices of the printing machine. In this manner, the use of special color measuring strips may be eliminated.

REFERENCES:
patent: 3958509 (1976-05-01), Murray et al.
patent: 3995958 (1976-12-01), Pfahl et al.
patent: 4210078 (1980-07-01), Greiner et al.
patent: 4210818 (1980-07-01), Green et al.
patent: 4390958 (1983-06-01), Mamberer
patent: 4494875 (1985-01-01), Schramm et al.
patent: 4510866 (1985-04-01), Sekizawa et al.

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