US3607346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layers method of wet transferring unexposed photographic emulsion
Assignee: Eastman Kodak Co
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Filing: 1969-04-21
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Granted: 1971-09-21
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Expires: 1989-04-21
Abstract
Abstract A method of retaining the sensitomeric properties of photographic silver halide emulsion layers which have been transferred from one support to another via an aqueous bath. Said method comprises suspending a stripped emulsion layer in an aqueous bath comprising a saccharide at a concentration of about 1 to 200 grams per liter, positioning a support beneath and contiguous to said layer, and removing said support bearing the emulsion layer from the bath.
Inventors
- 👤 Rex Leslie Darlow
- 👤 Guy William Willis Stevens
- 👤 Jill Frances Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
10 words
The improvement of claim 1 wherein said saccharide is glucose.
Claim 2
Dependent Claim
10 words
The improvement of claim 1 wherein said saccharide is sucrose.
Claim 3
Dependent Claim
44 words
The improvement of claim 1 wherein said aqueous bath comprises a saccharide concentration in said aqueous bath of at least about 1 gram to about 200 grams per liter and a soluble bromide salt concentration from about 1 to about 100 mg. per liter.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein said support is beneath said emulsion layer upon said simultaneous removal of both from said aqueous bath.
Claim 5
Dependent Claim
28 words
The method of claim 1 wherein said support comprises an uneven surface in contiguous relationship with said emulsion layer upon removal of said support from said aqueous bath.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein said emulsion layer is dry-stripped from another support before suspending in said aqueous bath.
Claim 7
Dependent Claim
70 words
An improved method of wet-transferring an unexposed photographic dry-stripped emulsion layer uniformly to an uneven-surfaced support, said method comprising suspending said emulsion layer in an aqueous bath comprising a saccharide at a concentration of from at least about 1 gram to about 200 grams per liter, positioning said support beneath and in contiguous relationship with said emulsion layer and removing said support bearing said emulsion layer from said aqueous bath.
References Cited (Backward Citations)
US3185569A
Cited
GB1062116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |