US4359525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a photosensitive silver halide element
Assignee: Polaroid Corp
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Filing: 1981-11-23
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Granted: 1982-11-16
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Expires: 2001-11-23
Abstract
Abstract A photosensitive silver halide element comprising a support carrying single effective silver halide grains in a predetermined spaced array is prepared by coalescing fine-grain silver halide in a plurality of spaced depressions in a surface by melting said fine-grain silver halide.
Inventors
- 👤 Arthur M. Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; Y; Y10; Y10S; Y10S430/00; Y10S430/133
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
46 words
A method for forming a photosensitive element comprising a plurality of single effective silver halide grains in a predetermined spaced array which comprises coalescing fine-grain silver halide by heating said fine-grain silver halide at least to its melting point in a plurality of predetermined spaced depressions.
Claim 2
Independent Claim
46 words
A method for forming a photosensitive element comprising a plurality of single effective silver halide grains in a predetermined spaced array which comprises coalescing fine-grain silver halide by heating said fine-grain silver halide at least to its melting point in a plurality of predetermined spaced depressions.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said spaced depressions are in a substantially planar surface.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein said fine-grain silver halide is substantially binder-free.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein said fine-grain silver halide is a fine-grain silver halide emulsion.
Claim 6
Dependent Claim
19 words
The method of claim 1 which includes the step of depositing said fine-grain silver halide in said spaced depressions.
Claim 7
Dependent Claim
13 words
The method of claim 1 wherein said fine-grain silver halide includes a surfactant.
Claim 8
Dependent Claim
11 words
The method of claim 2 wherein said planar surface is nickel.
Claim 9
Dependent Claim
12 words
The method of claim 7 wherein said planar surface is electroformed nickel.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein said silver halide is silver bromide.
References Cited (Backward Citations)
US3455239A
Cited
WO1980001614A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |