EP0078475A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image transfer material and transparency resulting therefrom
Assignee: Coulter Corp
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Filing: 1982-10-24
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Granted: —
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Expires: 2002-10-24
Abstract
Abstract An electrostatic transfer medium comprising a sheet formed of a transparent polyester plastic substrate having a thin transparent coating of a compatible polyester resinous composition having a softening range less than the softening range of the substrate material. A high resolution transparency is formed by electrophotograpically forming a toned latent electrostatic image of a document upon an electrophotographic member, bringing a transfer medium into engagement with the image under localized pressure and heat to form a laminate and separating the cooled laminate whereby the image is transferred in its entirety, intact, to the coating, the transfer being effected with minimal loss of optical density or resolution and practically no residue remaining on the electrophotographic member. The laminate may be cooled prior to separation.
Inventors
- 👤 Ferdinand Martinez
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 20:14
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/002; G03G7/0026; G03G7/0046; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
63 words
A transfer medium capable of receiving a toned electrostatically formed image permanently therein characterized by a transparent substrate, a thin transparent coating bonded to one surface of said substrate, said thin coating formed of a resinous material compatible structurally with said substrate and having a softening temperature range lower than said substrate, said coating capable of being preferentially softened relative to the substrate.
Claim 2
Dependent Claim
63 words
A transfer medium capable of receiving a toned electrostatically formed image permanently therein characterized by a transparent substrate, a thin transparent coating bonded to one surface of said substrate, said thin coating formed of a resinous material compatible structurally with said substrate and having a softening temperature range lower than said substrate, said coating capable of being preferentially softened relative to the substrate.
Claim 3
Dependent Claim
56 words
The transfer medium according to claim 1 characterized in that said coating is capable of being laminated to the toned image carrier under heat and pressure, thereafter being separable therefrom so that the toned image is substantially fully transferred to said coating and embedded therewithin with substantially full retention of the resolution of the toned image.
Claim 4
Dependent Claim
36 words
The transfer medium according to claim 1 characterized in that said substrate is a polyester plastic sheet material and said thin coating is a thermoplastic polyester resin having a softening range of from 127 to 155°C.
Claim 5
Dependent Claim
26 words
The transfer medium according to any one of claims 1, 2 or 3 characterized in that said thin coating is less than 15 microns in thickness.
Claim 6
Dependent Claim
28 words
The transfer medium according to claims 1 or 2 characterized in that said coating is formed of a material which softens at a temperature no greater than 170°C.
Claim 7
Dependent Claim
49 words
A projectable image transparency characterized by a sheet substrate of transparent polymeric material, a thin coating of a compatible resinous material bonded to one surface of said substrate and a plurality of toner particles arranged in an image pattern and embedded within said coating below the outer surface thereof.
Claim 8
Dependent Claim
49 words
A projectable image transparency characterized by a sheet substrate of transparent polymeric material, a thin coating of a compatible resinous material bonded to one surface of said substrate and a plurality of toner particles arranged in an image pattern and embedded within said coating below the outer surface thereof.
Claim 9
Dependent Claim
46 words
The image transparency according to claim 6 characterized in that said substrate is a polyester sheet, said thin coating is a polyester resinous composition coated on and bonded to said polyester sheet, said resinous composition having a softening range slightly lower than that of said substrate.
Claim 10
Dependent Claim
21 words
The image transparency according to claims 6 or 7 characterized in that the coating is less than 15 microns in thickness.
Claim 11
Dependent Claim
55 words
The image transparency according to claim 6 characterized in that the substrate is a heat stabilized polyester sheet material, said coating is a polyester-type resin having a softening range between l20°C and 155°C, the coating being between 2 to 10 microns in thickness, the solids content of the resin when applied being less than 25%.
References Cited (Backward Citations)
No citation records indexed.
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