Method and system for preparing a planographic printing form

Details Method and system for preparing a planographic printing form Method and system for preparing a planographic printing form

1989-10-05

1990-09-25

Crowder, Clifford D.

Printing

Planographic

Lithographic plate making, and processes of making or using...

B41C 105, B41C 110

Patent

active

049585649

ABSTRACT:
To prevent engagement of a thermo printing head (23), with a thermo transfer tape (22) directly against a plate cylinder having an unyielding surface, an auxiliary transfer element in ribbon, tape or belt form (24, 24', 35) is provided, which is engaged against the thermo tape, ribbon or belt (22) by a counter roller (25) of yielding material or have a yielding surface; thermally affectable material is transferred from the thermo transfer tape in accordance with image information to be printed on the auxiliary tape (24, 24') for transfer to the plate cylinder or material which is not to print is transferred on the auxiliary tape, and the remainder of the material is transferred from the thermo transfer tape on the tape cylinder (10).

REFERENCES:
patent: 3859920 (1975-01-01), Ritzerfeld
patent: 3964389 (1976-06-01), Peterson
patent: 4846065 (1989-07-01), Mayrhofer et al.

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