Patent US4390612A successfully refreshed from Google Patents.
US4390612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colloid relief images formed by oxidized developer transfer
Assignee: Tulalip Consultoria Comercial SU
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Filing: 1982-08-13
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Granted: 1983-06-28
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Expires: 2002-08-13
Abstract
Abstract A process for forming a colloid relief image on a substrate, comprising the steps of: (a) exposing to actinic light a sheet structure comprising a substrate having coated on one surface thereof a first layer comprising a colloid material capable of being tanned when contacted by oxidized silver halide developer, and coated over the first layer a second layer comprising a photographic silver halide emulsion, the emulsion containing substituted gelatin which is substantially resistant to tanning by the oxidized silver halide developers; (b) developing exposed sheet structure with oxidizable silver halide developers; and (c) washing the sheet structure with warm water, whereby all of the second layer is removed together with portions of the first layer which have not been tanned.
Inventors
- 👤 Robert L. Rutledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:53
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/315
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
A process for forming a colloid relief image on a substrate, comprising the steps of: a. exposing to actinic light a sheet structure comprising a substrate having coated on one surface thereof a first layer comprising a colloid material capable of being tanned when contacted by oxidized silver halide developer, and coated over said first layer a second layer comprising a photographic silver halide emulsion, said emulsion containing substituted gelatin, said substituted gelatin being substantially resistant to tanning by said oxidized silver halide developers; b. developing said exposed sheet structure with oxidizable silver halide developers; c. washing said sheet structure with warm water, whereby all of said second layer is removed from said sheet structure together with portions of said first layer which have not been tanned by contact with oxidized silver halide developers.
Claim 2
Dependent Claim
134 words
A process for forming a colloid relief image on a substrate, comprising the steps of: a. exposing to actinic light a sheet structure comprising a substrate having coated on one surface thereof a first layer comprising a colloid material capable of being tanned when contacted by oxidized silver halide developer, and coated over said first layer a second layer comprising a photographic silver halide emulsion, said emulsion containing substituted gelatin, said substituted gelatin being substantially resistant to tanning by said oxidized silver halide developers; b. developing said exposed sheet structure with oxidizable silver halide developers; c. washing said sheet structure with warm water, whereby all of said second layer is removed from said sheet structure together with portions of said first layer which have not been tanned by contact with oxidized silver halide developers.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said first layer contains a pigment dispersed therein.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said first layer contains a dye dispersed therein.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein said photographic silver halide emulsion is negative-acting.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said photographic silver halide emulsion is positive-acting.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein said colloidal material comprises unsubstituted gelatin.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein said colloidal material comprises casein.
Claim 9
Dependent Claim
20 words
The process of claim 1 wherein said first layer of said sheet structure further contains a silver halide developer therein.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |