Manufacturing method for color proofing elements
AssigneeMinnesota Mining and Manufacturing Company
InventorsGordon Christopher Smith, Hamid Barjesteh, James Alan Bonham
Life of this patent
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Abstract
Water coatable and water developable negative-acting color proofing single sheet and overlay systems are described. The water-soluble photosensitive color layer employed in each type of proofing construction includes a photopolymerizable polymer having a weight-average molecular weight between 5,000 and 100,000; an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300; and a water-soluble photoinitiator.
Claims20
A method of manufacturing a color proofing element comprising sequentially depositing the following layers onto a carrier from an aqueous vehicle:
- (a) a water-soluble or water-dispersible photosensitive color layer capable of being rendered insoluble and indispersible in an aqueous developer upon exposure to radiation, comprising:
- (1) an acrylated polymer having at least one pendant unsaturated acrylate group and a weight-average molecular weight between 5,000 and 100,000;
- (2) an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300;
- (3) a colorant;
- and
- (4) a photoinitiator;
- and
- (b) a water-soluble or water-dispersible oxygen barrier layer.
A method of manufacturing a color proofing element comprising sequentially depositing the following layers onto a carrier from an aqueous vehicle:
- (a) a water-soluble or water-dispersible photosensitive color layer capable of being rendered insoluble and indispersible in an aqueous developer upon exposure to radiation, comprising:
- (1) an acrylated polymer having at least one pendant unsaturated acrylate group and a weight-average molecular weight between 5,000 and 100,000;
- (2) an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300;
- (3) a texturing material;
- and
- (4) a photoinitiator;
- and
- (b) a water-soluble or water-dispersible oxygen barrier layer.
A method of manufacturing a negative-acting color proofing element comprising sequentially depositing the following layers onto a carrier from an aqueous vehicle:
- (a) a water-soluble or water dispersible release layer;
- (b) a water-soluble or water-dispersible photosensitive color layer capable of being rendered insoluble and indispersible in an aqueous developer upon exposure to radiation, comprising:
- (1) an acrylated polymer having at least one pendant unsaturated acrylate group and a weight-average molecular weight between 5,000 and 100,000;
- (2) an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300;
- (3) a colorant;
- and
- (4) a photoinitiator;
- (c) a water-soluble or water-dispersible photopolymerizable inter-layer capable of being rendered insoluble and indispersible in an aqueous developer upon exposure to radiation;
- and
- (d) a water-emulsion adhesive layer.
A method of manufacturing a negative-acting color proofing element comprising sequentially depositing the following layers onto a carrier from an aqueous vehicle:
- (a) a water-soluble or water dispersible release layer;
- (b) a water-soluble or water-dispersible photosensitive color layer capable of being rendered insoluble and indispersible in an aqueous developer upon exposure to radiation, comprising:
- (1) an acrylated polymer having at least one pendant unsaturated acrylate group and a weight-average molecular weight between 5,000 and 100,000;
- (2) an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300;
- (3) a texturing material;
- and
- (4) a photoinitiator;
- (c) a water-soluble or water-dispersible photopolymerizable inter-layer capable of being rendered insoluble and indispersible in an aqueous developer upon exposure to radiation;
- and
- (d) a water-emulsion adhesive layer.
Dependencies are inferred from the claim text.