US4127413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the addition of photographic addenda
Assignee: Konica Minolta Inc
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Filing: 1978-02-02
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Granted: 1978-11-28
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Expires: 1998-02-02
Abstract
Abstract A method for adding oil-soluble photographic addenda in the form of their solution in a high boiling organic solvent to a hydrophilic colloidal solution for forming a layer of a light-sensitive silver halide photographic material in the homogeneously dispersed state, is described.
Inventors
- 👤 Masao Ishihara
- 👤 Ryoichiro Kobayashi
- 👤 Tugumoto Usui
- 👤 Takayoshi Omura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:03
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3885
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
In a method for the addition of oil-soluble photographic addenda to a hydrophilic colloidal solution for forming a layer of a light-sensitive silver halide photographic material which method comprises; (a) dissolving said addenda with a high-boiling organic solvent, (b) and thereafter dispersing, into the hydrophilic colloidal solution, the addenda dissolved in the high-boiling organic solvent, the improvement comprising said high boiling organic solvent being represented by the following general formula: ##STR4## wherein R represents an alkyl group or alkenyl having 6 to 22 carbon atoms, R 1 , R 2 and R 3 individually represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy carbonyl group or an acyloxy group having 1 to 10 carbon atoms.
Claim 2
Dependent Claim
119 words
In a method for the addition of oil-soluble photographic addenda to a hydrophilic colloidal solution for forming a layer of a light-sensitive silver halide photographic material which method comprises; (a) dissolving said addenda with a high-boiling organic solvent, (b) and thereafter dispersing, into the hydrophilic colloidal solution, the addenda dissolved in the high-boiling organic solvent, the improvement comprising said high boiling organic solvent being represented by the following general formula: ##STR4## wherein R represents an alkyl group or alkenyl having 6 to 22 carbon atoms, R 1 , R 2 and R 3 individually represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy carbonyl group or an acyloxy group having 1 to 10 carbon atoms.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein R 1 , R 2 and R 3 individually represent hydrogen.
Claim 4
Dependent Claim
24 words
A method according to claim 2 wherein said addenda are selected from the group consisting of couplers, UV absorbing substances and color stain inhibitors.
Claim 5
Dependent Claim
26 words
A method according to claim 2 wherein said addenda are selected from the group consisting of diffusible dye releasing redox compounds and development inhibitor releasing compounds.
Claim 6
Dependent Claim
19 words
A method according to claim 2 wherein said hydrophilic colloidal solution is a gelatin or a gelatin derivative solution.
Claim 7
Dependent Claim
31 words
A method according to claim 2 wherein said layer is selected from the group consisting of a silver halide emulsion layer, an intermediate layer, a protective layer and an antihalation layer.
References Cited (Backward Citations)
US2888313A
Cited
US3930866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |