Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates
Patent
1993-08-04
1994-08-23
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making printing plates
430157, 430171, 430176, 430270, 430278, 430309, 430325, 430330, G03F 730, G03F 7021
Patent
active
053406990
ABSTRACT:
A radiation-sensitive composition especially adapted to prepare a lithographic printing plate that is sensitive to both ultraviolet and infrared radiation and capable of functioning in either a positive-working or negative-working manner is comprised of (1) a resole resin, (2) a novolac resin, (3) a latent Bronsted acid and (4) an infrared absorber. The solubility of the composition in aqueous alkaline developing solution is both reduced in exposed areas and increased in unexposed areas by the steps of imagewise exposure to activating radiation and heating.
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patent: 5085972 (1992-01-01), Vogel
Corbiere Steven L.
Haley Neil F.
Bowers Jr. Charles L.
Chu John S.
Eastman Kodak Company
Lorenzo Alfred P.
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