Printing – Planographic – Rotary machines
Patent
1995-06-05
1997-04-15
Fisher, J. Reed
Printing
Planographic
Rotary machines
101148, B41F 702, B41F 726, B41F 732
Patent
active
056199201
ABSTRACT:
A system for supplying dampening fluid to a lithographic press dampening system. The system prevents dampening fluid starvation at a metering nip located between dampening system rollers, and minimizes contamination of the dampening fluid in the dampening system. A pre-determined distance is maintained between (1) the surface of a roller partially immersed in dampening fluid and (2) several surfaces of a fluid collection pan, so as to move contaminants from a back region of the collection pan to a front region of the collection pan for removal. Sensors are used to determine the proper level of dampening fluid within the collection pan to avoid nip starvation.
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Graphic Arts Monthly Dec. 1979, "Ink Fountain Levels ---" pp. 95-96.
Reprint from Graphics Arts Monthly, Sep.-Nov. 1984 "Recent Trends and Developments in Lithographic Dampening."
Reprint of speech of John MacPhee "The Handling and Care of Fountain Solution," given at the GATF/R&E Counsel Lithographic Dampening Conference, Feb. 18, 1976.
Baldwin Graphic Systems Inc.
Fisher J. Reed
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