Methods for preparing lithograhic printing plates

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United States of America Patent

PATENT NO 8846299
SERIAL NO

13615739

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Abstract

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A lithographic processing solution has a pH of less than 12 and comprises at least 0.001 and up to and including 1 weight % of a water-soluble or water-dispersible, non-IR-sensitive compound that has a heterocyclic moiety with a quaternary nitrogen in the 1-position of the heterocyclic ring, and has one or more electron donating substituents attached to the heterocyclic ring, at least one of which electron donating substituents is attached in the 2-position. This processing solution can be used to develop both single-layer and multi-layer positive-working lithographic printing plate precursors that have been imaged using infrared radiation.

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Patent Owner(s)

Patent OwnerAddress
EASTMAN KODAK COMPANY343 STATE STREET ROCHESTER NY 14650-2201

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hauck, Gerhard Badenhausen, DE 38 221
Nakash, Moshe Ramat Hashron, IL 25 85
Savariar-Hauck, Celin Badenhausen, DE 57 606

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