Method and apparatus for controlling ink film thickness

Details Method and apparatus for controlling ink film thickness Method and apparatus for controlling ink film thickness

1998-12-15

1999-11-23

Fisher, J. Reed

Printing

Processes

Condition responsive

101183, 1013501, B41F 3104

Patent

active

059880678

ABSTRACT:
In an ink film thickness control method, second ink film thickness distribution, corresponding to an image on an old printing plate, on a minimum first ink film thickness distribution formed on the surface of an ink roller group and required during printing, is removed for a predetermined one of printing units thereby leaving the first ink film thickness distribution. Which one of pre-inking I mode and pre-inking II mode is to be performed is set for each printing unit. The minimum first ink film thickness distribution required during printing is formed on the surface of the ink roller group of the printing unit set in the pre-inking I mode after a new printing plate is mounted in the printing unit set in the pre-inking I mode. The second ink film thickness distribution corresponding to the image of the new printing plate is superposed on the first ink film thickness distribution. For the printing unit set in the pre-inking II mode, the second ink film thickness distribution is formed simultaneously on the first ink film thickness distribution which has already been formed. An ink film thickness control apparatus is also disclosed.

REFERENCES:
patent: 4660470 (1987-04-01), Kramp et al.
patent: 5010820 (1991-04-01), Loffler
patent: 5070784 (1991-12-01), Nishida et al.
patent: 5148747 (1992-09-01), Rodi et al.
patent: 5447102 (1995-09-01), Pfeiffer et al.

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