US3936306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing gelatino-silver halide photographic light-sensitive materials having a high silver halide content
Assignee: Fujifilm Holdings Corp
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Filing: 1974-06-28
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Granted: 1976-02-03
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Expires: 1994-06-28
Abstract
Abstract In a process for producing a gelatino silver halide light-sensitive material containing a high silver halide content comprising applying a gelatino silver halide emulsion layer having a silver halide to gelatin weight ratio of at least 0.8 and a gelatin-containing protective layer to a non-hygroscopic film support having good dimensional stability and then drying the layers, the improvement which comprises drying the layers on the support when the water content becomes less than 300% based on the mean drying amount defined as: ##EQU1## BY CONTACTING SAID MATERIAL WITH AIR HAVING A RELATIVE HUMIDITY OF FROM 50 TO 75%.
Inventors
- 👤 Minoru Minoda
- 👤 Haruo Masuda
- 👤 Mitsuru Suzuki
- 👤 Hirohi Chikamasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; G03C1/76; G03C1/7614; G03C2001/7451; Y; Y10; Y10S; Y10S430/00; Y10S430/14; Y10S430/156; Y10S430/16; Y10S430/162
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
156 words
In a process for producing a gelatino silver halide light-sensitive material containing a high silver halide content which includes applying first a gelatino silver halide emulsion layer having a silver halide to gelatin weight ratio of at least 0.8 and then a gelatin-containing protective layer to a non-hygroscopic film support having good dimensional stability, and then drying of said layers, the improvement which comprises drying said layers on the support in two stages wherein a. in a first stage said layers are dried to a water content less than 300% and near the critical moisture content with air having a relative humidity of from 10 to 35% and b. in a second stage said layers are dried to remove water content of less than 300% and below the critical moisture content with air having a relative humidity of from 50 to 75%, said water content being based on the mean drying amount as defined by: ##EQU3##
Claim 2
Dependent Claim
156 words
In a process for producing a gelatino silver halide light-sensitive material containing a high silver halide content which includes applying first a gelatino silver halide emulsion layer having a silver halide to gelatin weight ratio of at least 0.8 and then a gelatin-containing protective layer to a non-hygroscopic film support having good dimensional stability, and then drying of said layers, the improvement which comprises drying said layers on the support in two stages wherein a. in a first stage said layers are dried to a water content less than 300% and near the critical moisture content with air having a relative humidity of from 10 to 35% and b. in a second stage said layers are dried to remove water content of less than 300% and below the critical moisture content with air having a relative humidity of from 50 to 75%, said water content being based on the mean drying amount as defined by: ##EQU3##
Claim 3
Dependent Claim
18 words
The process as in claim 1, wherein said air has a dry-bulb temperature of from 2° to 35°C.
Claim 4
Dependent Claim
19 words
The process as in claim 1, wherein said silver halide to gelatin weight ratio ranges from 1.0 to 4.0.
Claim 5
Dependent Claim
14 words
The process as in claim 1, wherein said protective layer is a gelatin layer.
Claim 6
Dependent Claim
16 words
The process as in claim 1, wherein said air employed has a relative humidity of 30%.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |