US4327176A — Dry image forming material

Claim 1

Independent Claim 342 words

A dry image forming material comprising: (a) a non-photosensitive organic silver salt oxidizing agent; (b) a reducing agent for silver ions; (c) a photosensitive silver compound or a photosensitive silver compound-forming component capable of forming a photosensitive silver compound by the reaction thereof with said organic silver salt oxidizing agent (a); and (d) a high impact acrylic resin having an Izod impact strength (notched) of at least 0.4 ft.lb/in as measured in accordance with ASTM D 256 and consisting essentially of a blend of at least on rigid thermoplastic acrylic polymer and at least one rubber-elastic polymer, or at least one copolymer comprising rigidity-providing acrylic monomer units and rubber elasticity-providing monomer units or a combination thereof with at least one rigid thermoplastic acrylic polymer and/or at least one rubber-elastic polymer; or consisting essentially of one prepared by polymerizing at least one member selected from unsubstituted C 1 -C 4 alkyl, cyclohexyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl esters of methacrylic acid in the presence of at least one rubber-elastic polymer and/or at least one copolymer comprising rigidity-providing monomer units and rubber elasticity-providing monomer units; said at least one rigid thermoplastic acrylic polymer being an acrylic homopolymer of an unsubstituted C 1 -C 4 alkyl, cyclohexyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl ester of methacrylic acid, or an acrylic copolymer comprising monomer units of at least one member selected from unsubstituted C 1 -C 6 alkyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl esters of methacrylic acid, and being of M 75 to M 120 in Rockwell hardness; said at least one copolymer comprising rigidity-providing monomer units of at least one member selected from unsubstituted C 1 -C 4 alkyl, cyclohexyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl esters of methacrylic acid and 0.5 to 300% by weight, based on the rigidity-providing monomer units, of rubber elasticity-providing monomer units of at least one member selected from unsubstituted C 1 -C 22 alkyl esters of acrylic acid and unsubstituted C 7 -C 22 alkyl esters of methacrylic acid.

Claim 2

Dependent Claim 342 words

A dry image forming material comprising: (a) a non-photosensitive organic silver salt oxidizing agent; (b) a reducing agent for silver ions; (c) a photosensitive silver compound or a photosensitive silver compound-forming component capable of forming a photosensitive silver compound by the reaction thereof with said organic silver salt oxidizing agent (a); and (d) a high impact acrylic resin having an Izod impact strength (notched) of at least 0.4 ft.lb/in as measured in accordance with ASTM D 256 and consisting essentially of a blend of at least on rigid thermoplastic acrylic polymer and at least one rubber-elastic polymer, or at least one copolymer comprising rigidity-providing acrylic monomer units and rubber elasticity-providing monomer units or a combination thereof with at least one rigid thermoplastic acrylic polymer and/or at least one rubber-elastic polymer; or consisting essentially of one prepared by polymerizing at least one member selected from unsubstituted C 1 -C 4 alkyl, cyclohexyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl esters of methacrylic acid in the presence of at least one rubber-elastic polymer and/or at least one copolymer comprising rigidity-providing monomer units and rubber elasticity-providing monomer units; said at least one rigid thermoplastic acrylic polymer being an acrylic homopolymer of an unsubstituted C 1 -C 4 alkyl, cyclohexyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl ester of methacrylic acid, or an acrylic copolymer comprising monomer units of at least one member selected from unsubstituted C 1 -C 6 alkyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl esters of methacrylic acid, and being of M 75 to M 120 in Rockwell hardness; said at least one copolymer comprising rigidity-providing monomer units of at least one member selected from unsubstituted C 1 -C 4 alkyl, cyclohexyl, C 6 -C 10 aryl, benzyl or tetrahydrofurfuryl esters of methacrylic acid and 0.5 to 300% by weight, based on the rigidity-providing monomer units, of rubber elasticity-providing monomer units of at least one member selected from unsubstituted C 1 -C 22 alkyl esters of acrylic acid and unsubstituted C 7 -C 22 alkyl esters of methacrylic acid.

Claim 3

Dependent Claim 30 words

A dry image forming material as claimed in claim 1, wherein the component (d) is contained in a layer containing at least one of the components (a), (b) and (c).

Claim 4

Dependent Claim 34 words

A dry image forming material as claimed in claim 1, wherein the component (d) is contained in a layer containing the component (a), and/or a layer formed on said layer containing the component (a).

Claim 5

Dependent Claim 33 words

A dry image forming material as claimed in claim 3, wherein the component (d) has an Izod impact strength (notched) of 0.5 to 25 ft.lb/in as measured in accordance with ASTM D 256.

Claim 6

Dependent Claim 26 words

a dry image forming material as claimed in claim 1, wherein said at least one rubber-elastic polymer has a glass transition temperature of at most 80°.

Claim 7

Dependent Claim 27 words

A dry image forming material as claimed in claim 5, wherein said at least one rubber-elastic polymer has a glass transition temperature of -80° to +40° C.

Claim 8

Dependent Claim 29 words

A dry image forming material as claimed in claim 1, wherein said at least one rigid thermoplastic acrylic polymer has a weight average molecular weight of 5,000 to 1,000,000.

Claim 9

Dependent Claim 26 words

A dry image forming material as claimed in claim 1, wherein said at least one copolymer has a weight average molecular weight of 5,000 to 1,000,000.

Claim 10

Dependent Claim 46 words

A dry image forming material as claimed in claim 1, wherein the component (d) contains 0.5 to 300 parts by weight of the rubber-elastic polymer and/or rubber elasticity-providing monomer units per 100 parts by weight of the rigid thermoplastic acrylic polymer and/or rigidity-providing acrylic monomer units.

Claim 11

Dependent Claim 40 words

A dry image forming material as claimed in claim 1, wherein said acrylic copolymer further contains monomer units of at least one member selected from the group consisting of styrene, vinyl acetate, acrylonitrile, acrylic acid and maleic acid or anhydride.

Claim 12

Dependent Claim 34 words

A dry image forming material as claimed in claim 1, wherein said at least one rubber-elastic polymer is a member selected from the group consisting of polyurethanes, styrene-butadiene copolymers, ethylene-vinyl acetate copolymers and polyacrylates.

Claim 13

Dependent Claim 57 words

A dry image forming material as claimed in claim 11, wherein said at least one rubber-elastic polymer is a polyacrylate comprising at least 5% by weight of monomer units of at least one member selected from unsubstituted C 1 -C 22 alkyl esters of acrylic acid, and has a glass transition temperature of at most 80° C.

Claim 14

Dependent Claim 57 words

A dry image forming material as claimed in claim 11, wherein said at least one rubber-elastic polymer is a polyacrylate comprising at least 80% by weight of monomer units of at least one member selected from unsubstituted C 7 -C 22 alkyl esters of methacrylic acid, and has a glass transition temperature of at most 80° C.

Claim 15

Dependent Claim 22 words

A dry image forming material as claimed in claim 11, wherein said at least one rubber-elastic polymer is a polyacrylate partially crosslinked.

Claim 16

Dependent Claim 37 words

A dry image forming material as claimed in claim 1, wherein the component (d) comprises at least 50 parts by weight of the acrylic and/or methacrylic ester component per 100 parts by weight of the component (d).

Claim 17

Dependent Claim 59 words

A dry image forming material as claimed in claim 1, wherein the component (a) is contained in a layer containing polyvinyl butyral and the component (d) is a blend of polymethyl methacrylate and a copolymer comprising alkyl acrylate monomer units which blend is contained in a layer formed on the layer comprising the component (a) and the polyvinyl butyral.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1985-04-26	1985-10-26	1986-04-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1989-04-26	1989-10-26	1990-04-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1993-04-26	1993-10-26	1994-04-27	$7700.00	Window Closed / Lapsed

Dry image forming material

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag