Lithographic printing plates for use with laser discharge imagin

Details Lithographic printing plates for use with laser discharge imagin Lithographic printing plates for use with laser discharge imagin

1995-06-07

1996-09-03

Funk, Stephen R.

Printing

Planographic

Lithographic printing plates

101457, 101462, B41C 108

Patent

active

055513417

ABSTRACT:
Apparatus and methods for imaging lithographic plates using laser devices that emit in the near-infrared region, and plates suitable for imaging with the apparatus and methods. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.

REFERENCES:
patent: 2875051 (1959-02-01), De Maria
patent: 3945830 (1976-03-01), Yazawa et al.
patent: 4357403 (1982-11-01), Shimada et al.
patent: 4911075 (1990-03-01), Lewis et al.
Research Disclosure, "Method and Material for the Production of a Dry Planographic Printing Plate", Apr. 1980.
"Direct Method of Producing Waterless Offset Plates by Controlled Laser Beam" Nechiporenko et al., DSSR Research Institute pp. 139-148.

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