Method for providing lithographic printing plates

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United States of America Patent

PATENT NO 9962923
SERIAL NO

14917957

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method of making a lithographic printing plate includes the steps of a) image-wise exposing a lithographic printing plate precursor including a hydrophilic support and a coating containing a colorant precursor to form a lithographic image consisting of printing areas and non-printing areas, b) developing the plate precursor to remove the coating in the non-printing areas from the support, and c) drying the plate precursor, and d) subjecting the plate precursor to heat or radiation to induce a colour change of the coating in the printing areas, wherein before step b) the coating in the non-printing areas and the support are characterised by a CIE 1976 colour difference ΔE1 which is 5.0 or less, and after step d) the CIE 1976 colour difference ΔE2 between the coating in the printing areas and the non-printing areas is more than 6.8.

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Patent Owner(s)

Patent OwnerAddress
AGFA NVMORTSEL

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Callant, Paul Mortsel, BE 59 236
Hendrikx, Peter Mortsel, BE 27 69
Steenackers, Marin Mortsel, BE 18 20
Verbrugghe, Sam Mortsel, BE 16 20

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