Printing – Inkers – Fountains
Patent
1989-08-23
1991-07-16
Burr, Edgar S.
Printing
Inkers
Fountains
101350, B41F 3102
Patent
active
050315340
ABSTRACT:
The invention relates to a method and an apparatus for setting up a print specification defined by a binary value representing the solid color density and the dot gain on an autotypically operating polychrome printing machine. Binary values representing solid color density and dot gain measured by means of a densitometer are tested for their conformity with the print specification with the aid of correlations between solid color densities and dot gains from previous, similar printings, in order to determine at the earliest possible time during the setting up of the printing press for a new print order whether the print specification can be achieved by the mere manipulation of its color area adjusters. If conformity can not be achieved, the printing press is shut down. By varying relevant printing parameters an alteration of the momentary relationship existing between the solid color density and dot gain is brought about such that, when the printing is resumed, conformity with the print specification may be achieved. If necessary these steps are repeated several times.
REFERENCES:
patent: 3930447 (1976-01-01), Murray
patent: 4852485 (1989-08-01), Brunner
Bennett C. A.
Burr Edgar S.
Striker Michael J.
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