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US 6,352,805 B1Granted
Photocrosslinkable latex protective overcoat for imaging elements
AssigneeEastman Kodak Company
InventorsJeffrey F. Taylor, Kevin M. O'Connor, Elmer C. Flood, Hwei-Ling Yau, Tienteh Chen
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Abstract
The present invention is directed to an imaged element that includes a support, at least image-receiving layer superposed on the support and a water-resistant protective overcoat overlying the image-receiving layer that is water-resistance. The present invention is also directed to a method of making a print by application of a UV-curable water-dispersible latex.
Claims20
An imaged element having a water-resistant protective overcoat thereon, comprising the following:
- (a) a support and at least one image-receiving layer carrying a dye or pigment-based pictorial image;
- and
- (b) overlying the at least one image-receiving layer, a protective overcoat having a laydown of at least 0.54 g/m2 (50 mg/ft2) of a crosslinked coating composition comprising the reaction product of the following components:
- a) water-dispersible latex particles comprising a film-forming hydrophobic polymer which particles have an average particle size of from 10 to 250 nm;
- b) a photopolymerizable component system comprising 20 to 300 weight percent, with respect to the hydrophobic polymer, of copolymerizable compatible monomers, at least one of which monomers is a multifunctional monomer having more than one polymerizable ethylenic unsaturation, and 1 to 25 weight percent, with respect to the photopolymerizable component system, of an ultraviolet light-sensitive initiator;
- wherein the Tg of the coated composition comprising the latex particles and the photopolymerizable component system prior to crosslinking is −60 to 60° C.
3 more elements
A photographic element having a water-resistant protective overcoat thereon, the protective overcoat comprising:
- (a) a support;
- (b) at least one silver-halide-derived imaged layer superposed on a side of said support;
- and
- (c) overlying the silver-halide-derived image layer, a protective over coat having a laydown of at least 0.54 g/m2 (50 mg/ft2) of a crosslinked coating composition comprising the reaction product of the following components:
- i) 0.45 to 6.0 g/m2 (about 45 to 600 mg/ft2) dry laydown of water-dispersible latex particles comprising a film-forming hydrophobic polymer which particles have an average particle size of from 10 to 250 nm;
- and
- ii) a photopolymerizable component system comprising 20 to 300 weight percent, with respect to the hydrophobic polymer, of copolymerizable compatible monomers, at least one of which monomers is a multifunctional monomer having more than one polymerizable ethylenic unsaturation, and 1 to 25 weight percent, with respect to the photopolymerizable component system, of an ultraviolet light-sensitive initiator;
- wherein the Tg of the coated composition comprising the latex particles and the photopolymerizable component system prior to crosslinking is −60 to 60° C.
5 more elements
A method of making an imaged element comprising:
- (a) providing an imaging element comprising a support and at least one imaging layer superposed on a side of said support;
- (b) forming an image in the at least one imaging layer;
- (c) applying a protective overcoat having a laydown of at least 0.54 g/m2 (50 mg/ft2) made from a coating composition comprising (i) water-dispersible latex particles comprising a film-forming hydrophobic polymer which particles have an average particle size of from 10 to 250 nm;
- (ii) a photopolymerizable component system comprising 20 to 300 weight percent, with respect to the hydrophobic polymer, of copolymerizable compatible monomers, at least one of which monomers is a multifunctional monomer having more than one polymerizable ethylenic unsaturation, and (iii) 1 to 25 weight percent, with respect to the component, of a ultraviolet light-sensitive initiator;
- wherein the Tg of the coated composition comprising the latex particles and the photopolymerizable component system prior to crosslinking is −60 to 60° C.;
- and
- (d) curing the coating composition by the use of UV radiation to crosslink the monomers.
4 more elements
Dependencies are inferred from the claim text.