Printing – Inkers – Roller
Patent
1974-12-04
1976-05-18
Eickholt, E. H.
Printing
Inkers
Roller
137 39, 101148, B41F 3100
Patent
active
039569861
ABSTRACT:
An inking system for applying ink to a printing plate which includes a fountain roller and a series of ink feed rollers with at least one vibrated roller or drum. Means are provided for automatically regulating the temperature of the fountain roller thereby to maintain constant the amount of ink fed over a long press run for maintenance of a predetermined full tone density. Means are also provided for automatically regulating the temperature of the vibrated roller thereby to maintain constant the printing contrast in the half tone portions of the plate. The temperature regulating means includes both a source of heat and a source of cold, making it possible to either warm or cool the rollers thereby permitting automatic operation over a wide range of conditions including a wide variation in the ambient temperature. In the preferred embodiment the temperature of the rollers is maintained by circulating a fluid such as water through the rollers from a reservoir of fluid at a controlled rate and temperature. Means are additionally provided for applying to the rollers a "shot" of fluid which is selectively either hot or cold to bring the rollers rapidly to desired temperature prior to turning on the automatic regulating means. In one embodiment of the invention the temperatures of the fountain roller and vibrated roller are independently regulated by supplying them with fluid from separate reservoirs having provision for separate temperature regulation.
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Decker Peter
Wirz Burkhardt
Eickholt E. H.
Grapho Metronic GmbH & Co.
Roland Offsetmaschinenfabrik Faber & Schleicher AG
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