Laser-driven method and apparatus for lithographic imaging and p

Details Laser-driven method and apparatus for lithographic imaging and p Laser-driven method and apparatus for lithographic imaging and p

1999-10-07

2000-08-01

Funk, Stephen R.

Printing

Planographic

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

101459, 101462, B41C 110

Patent

active

060950498

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 and/or a fluid to which ink will not adhere that differs from that of unexposed areas.

REFERENCES:
patent: 5351617 (1994-10-01), Williams et al.
patent: 5385092 (1995-01-01), Lewis et al.
patent: 5540150 (1996-07-01), Lewis et al.
Research Disclosure Apr. 1980, 19201, "Method and material for the production of a dry planographic printing plate", Leenders et al., Apr. 1980.
"Direct Method of Producing Waterless Offset Plates by Controlled Laser Beam", pp. 139-148, 15th International IARIGAI Conference, Nechiporenko et al., Jun. 1979.

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