Printing – Planographic – Dampeners
Patent
1992-09-04
1993-06-15
Fisher, J. Reed
Printing
Planographic
Dampeners
107349, B41F 726, B41F 736, B41F 740
Patent
active
052189031
ABSTRACT:
A dampening system has a pan for containing dampening fluid, and transfer and metering rollers for bringing dampening fluid up out of the pan. A transition roller contacts one of the transfer and metering rollers. The transition roller is movable between first and second positions. In the first position, the transition is off of the plate cylinder and dampening fluid is applied to the plate cylinder by ink form rollers. In the second position, the transition roller is on the plate cylinder. Another version of the dampening system has a bridge roller between the transition roller and a ink form roller, which bridge roller is movable between third and fourth positions. In the third position, the bridge roller is on the transition roller. In the fourth position, the bridge roller is off of the transition roller. The dampening system can dampen the plate cylinder without the use of alcohol. The transition roller is rotated by a separate motor so that its speed is controlled independently of the other rollers. When the transition roller is on the plate cylinder, it can be slowed down to clean hickeys off of the plate cylinder. When the plate cylinder is clean, it can be moved off of the plate cylinder or speeded up to the same speed as the plate cylinder. A controller is provided to automatically adjust the amount of dampening fluid being applied to the plate cylinder by regulating the speed of the transfer and metering rollers.
REFERENCES:
patent: 3168037 (1965-02-01), Dahlgren
patent: 3467008 (1969-09-01), Domotor
patent: 3937141 (1976-02-01), Dahlgren
patent: 3986452 (1976-10-01), Dahlgren
patent: 4290360 (1981-09-01), Fischer
patent: 4438694 (1984-03-01), Parkins et al.
patent: 4440081 (1984-04-01), Beisel
patent: 4524690 (1985-06-01), Omori
patent: 4577556 (1986-03-01), Fischer
patent: 4724764 (1988-02-01), MacPhee et al.
patent: 4741269 (1988-05-01), Aylor et al.
patent: 4841855 (1989-06-01), Marcum
patent: 4887533 (1989-12-01), Lemaster
patent: 4913943 (1990-04-01), Goossen
patent: 4932319 (1990-06-01), Switall
patent: 4944223 (1990-07-01), Ishii et al.
patent: 4949637 (1990-08-01), Keller
patent: 4986176 (1991-01-01), Ishii et al.
patent: 4991502 (1991-02-01), Akao
Frank Donald L.
King Robert
MacConnell Edward P.
Fisher J. Reed
Mantooth Geoffrey A.
Sun Graphic Technologies, Inc.
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