Donald Frank

US Patent:

51580179, Oct 27, 1992

Filed:

Sep 11, 1990

Appl. No.:

7/580632

Inventors:

Edward P. MacConnell - Arlington TX
Robert King - Dallas TX
Donald L. Frank - Mesquite TX

Assignee:

Sun Graphic Technologies, Inc. - Fort Worth TX

International Classification:

B41L 2502

US Classification:

101148

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 position. 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 the 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.

US Patent:

52189031, Jun 15, 1993

Filed:

Sep 4, 1992

Appl. No.:

7/940686

Inventors:

Edward P. MacConnell - Arlington TX
Robert King - Dallas TX
Donald L. Frank - Mesquite TX

Assignee:

Sun Graphic Technologies, Inc. - Forth Worth TX

International Classification:

B41F 726
B41F 736
B41F 740

US Classification:

101148

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.