US4053314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine developer liquid for diazotype reproduction
Assignee: Bunshodo KK
•
Filing: 1975-08-04
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Granted: 1977-10-11
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Expires: 1995-08-04
Abstract
Abstract On an apparatus for developing latent images of diazotype prints with a developer liquid containing an organic amine or amines as the developing agent, the tendency of the diazotype paper to curl and wind round the applicator roller is effectively precluded by the addition of a very small amount of a fluorocarbon non-ionic surface active agent. The amount of the agent is preferably in the range from 0.01 to 1% of the total weight of the developer composition.
Inventors
- 👤 Masanori Kimura
- 👤 Koji Irino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/18; Y; Y10; Y10S; Y10S430/00; Y10S430/131
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A developer liquid for use in a development system using developer liquid applicator roller means wherein the liquid is supplied from said roller means to an exposed diazotype paper at a rate of not higher than 3 g/m 2 , said developer liquid consisting essentially of a mixture containing, one or more organic amines in a quantity adequate to develop an azo dye image in said diazotype paper, a diluent, and an additive of 0.01 to 1% by weight of a fluorocarbon non-ionic surface active agent based on the total weight of the mixture; said fluorocarbon non-ionic surface active agent being a compound selected from the group consisting of straight chain alkyl fluorocarbons, branched chain alkyl fluorocarbons, perfluoroalkyl fluorocarbons, and perfluorocyclic fluorocarbons.
Claim 2
Dependent Claim
122 words
A developer liquid for use in a development system using developer liquid applicator roller means wherein the liquid is supplied from said roller means to an exposed diazotype paper at a rate of not higher than 3 g/m 2 , said developer liquid consisting essentially of a mixture containing, one or more organic amines in a quantity adequate to develop an azo dye image in said diazotype paper, a diluent, and an additive of 0.01 to 1% by weight of a fluorocarbon non-ionic surface active agent based on the total weight of the mixture; said fluorocarbon non-ionic surface active agent being a compound selected from the group consisting of straight chain alkyl fluorocarbons, branched chain alkyl fluorocarbons, perfluoroalkyl fluorocarbons, and perfluorocyclic fluorocarbons.
Claim 3
Dependent Claim
136 words
A developer liquid for use in a development system using developer liquid applicator roller means wherein the liquid is supplied from said roller means to an exposed diazotype paper at a rate of not higher than 3 g/m 2 , said liquid consisting essentially of a mixture of a fluorocarbon non-ionic surface active agent in a solution of a diluent and one or more organic amines as a developing agent, the non-ionic surface active agent being present in the amount of from 0.01 to 1% of the total weight of said liquid and said organic amines comprising not less than 20% of the total weight of said liquid; said fluorocarbon non-ionic surface active agent being a compound selected from the group consisting of straight chain alkyl fluorocarbons, branched chain alkyl fluorocarbons, perfluoroalkyl fluorocarbons, and perfluorocyclic fluorocarbons.
Claim 4
Dependent Claim
136 words
A developer liquid for use in a development system using developer liquid applicator roller means wherein the liquid is supplied from said roller means to an exposed diazotype paper at a rate of not higher than 3 g/m 2 , said liquid consisting essentially of a mixture of a fluorocarbon non-ionic surface active agent in a solution of a diluent and one or more organic amines as a developing agent, the non-ionic surface active agent being present in the amount of from 0.01 to 1% of the total weight of said liquid and said organic amines comprising not less than 20% of the total weight of said liquid; said fluorocarbon non-ionic surface active agent being a compound selected from the group consisting of straight chain alkyl fluorocarbons, branched chain alkyl fluorocarbons, perfluoroalkyl fluorocarbons, and perfluorocyclic fluorocarbons.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |