Patent US4226927A successfully refreshed from Google Patents.
US4226927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic speed transfer element with oxidized polyethylene stripping layer
Assignee: 3M Co
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Filing: 1978-05-10
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Granted: 1980-10-07
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Expires: 1998-05-10
Abstract
Abstract A presensitized photographic speed light sensitive sheet structure suitable for producing a dry transfer element, comprising a substrate having a release coating thereon, and overlying the release coating a photo-sensitive layer comprising a silver halide emulsion. After light exposure to an original and development, the remaining silver image portions have a greater adhesion for a receptor surface when applied thereto under pressure than the adhesion of the indicia to the substrate under like pressure.
Inventors
- 👤 Gerard H. Kinderman
- 👤 Robert L. Rutledge
- 👤 Ronald S. Steelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:01
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/12; G03C1/00; G03C1/76; G03C1/805; G03C11/18; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24025; Y10T428/24802
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A photographic sheet material suitable for producing a dry transfer element, comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said substrate a photosensitive layer comprising a silver halide emulsion, said photosensitive layer, after imagewise exposure thereof, development with a tanning developing agent and removal of the soluble portions of said layer, having greater adhesion to a receptor surface when applied thereto under pressure than the adhesion of said photosensitive layer to said carrier substrate under like pressure.
Claim 2
Dependent Claim
96 words
A photographic sheet material suitable for producing a dry transfer element, comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said substrate a photosensitive layer comprising a silver halide emulsion, said photosensitive layer, after imagewise exposure thereof, development with a tanning developing agent and removal of the soluble portions of said layer, having greater adhesion to a receptor surface when applied thereto under pressure than the adhesion of said photosensitive layer to said carrier substrate under like pressure.
Claim 3
Dependent Claim
72 words
A photographic sheet material suitable for producing a dry transfer element, comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said substrate a first layer comprising a colloidal material capable of being tanned when contacted with oxidized silver halide developers, and overlying said first layer a second layer comprising a photographic silver halide emulsion.
Claim 4
Dependent Claim
72 words
A photographic sheet material suitable for producing a dry transfer element, comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said substrate a first layer comprising a colloidal material capable of being tanned when contacted with oxidized silver halide developers, and overlying said first layer a second layer comprising a photographic silver halide emulsion.
Claim 5
Dependent Claim
94 words
A sheet material containing dry transferrable image areas thereon, said sheet structure comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said carrier substrate, image areas comprising a pressure sensitive adhesive and a silver halide emulsion which has been exposed and developed with a tanning development agent, said image areas having greater adhesion to a receptor surface when applied thereto under pressure than the adhesion of said image areas to said carrier substrate under like pressure.
Claim 6
Dependent Claim
94 words
A sheet material containing dry transferrable image areas thereon, said sheet structure comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said carrier substrate, image areas comprising a pressure sensitive adhesive and a silver halide emulsion which has been exposed and developed with a tanning development agent, said image areas having greater adhesion to a receptor surface when applied thereto under pressure than the adhesion of said image areas to said carrier substrate under like pressure.
Claim 7
Dependent Claim
91 words
A sheet material containing dry transferrable image areas thereon, said sheet structure comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said carrier substrate, image areas comprising pigmented hardened colloidal material, said colloidal material having been hardened tanning with an oxidized silver halide developer, said image areas having greater adhesion to a receptor surface when applied thereto under pressure than the adhesion of said image areas to said carrier substrate under like pressure.
Claim 8
Dependent Claim
91 words
A sheet material containing dry transferrable image areas thereon, said sheet structure comprising a thin, flexible carrier substrate having a release coating thereon, said release coating comprising oxidized polyethylene, and overlying said release coating and releasably bonded thereby to said carrier substrate, image areas comprising pigmented hardened colloidal material, said colloidal material having been hardened tanning with an oxidized silver halide developer, said image areas having greater adhesion to a receptor surface when applied thereto under pressure than the adhesion of said image areas to said carrier substrate under like pressure.
References Cited (Backward Citations)
US2409564A
Cited
US2326058A
Cited
US2544237A
Cited
US2925340A
Cited
US3364024A
Cited
US3380831A
Cited
US3369903A
Cited
US3518087A
Cited
US3607264A
Cited
US3639123A
Cited
US3661576A
Cited
US3753715A
Cited
US3778272A
Cited
US3718473A
Cited
US3754920A
Cited
US3794546A
Cited
US3770438A
Cited
US3775113A
Cited
US3782939A
Cited
GB1441982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |