US3877948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive printing composition
Assignee: Fujifilm Holdings Corp
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Filing: 1972-08-29
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Granted: 1975-04-15
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Expires: 1992-08-29
Abstract
Abstract A photosensitive printing material comprising a (1) water soluble alkylene oxide polymer, (2) a polycarboxylic acid or polycarboxylic acid salt capable of forming a water insoluble associate with said olefin oxide polymer and (3) photosensitizing agent is disclosed.
Inventors
- 👤 Teruhiko Yonezawa
- 👤 Masaru Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:41
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; G03F7/038; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A PHOTOSENSITIVE PRINTING COMPOSITION CONSISTING ESSENTIALLY OF (1) WATER SOLUBLE ALKYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 100,000 TO 10,000,000, (2) A POLYCARBOXYLIC ACID OR POLYCARBOXYLIC ACID SALT FORMING A WATER INSOLUBLE ASSOCIATE WITH SAID ALKYLENE OXIDE POLYMER AND (3) A PHOTOSENSITIZING AGENT SELECTED FROM THE GROUP CONSISTING OF A DIAZO COMPOUND, A BICHROMATE SALT AND AN ALKYL HALIDE.
Claim 2
Dependent Claim
62 words
A PHOTOSENSITIVE PRINTING COMPOSITION CONSISTING ESSENTIALLY OF (1) WATER SOLUBLE ALKYLENE OXIDE POLYMER HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 100,000 TO 10,000,000, (2) A POLYCARBOXYLIC ACID OR POLYCARBOXYLIC ACID SALT FORMING A WATER INSOLUBLE ASSOCIATE WITH SAID ALKYLENE OXIDE POLYMER AND (3) A PHOTOSENSITIZING AGENT SELECTED FROM THE GROUP CONSISTING OF A DIAZO COMPOUND, A BICHROMATE SALT AND AN ALKYL HALIDE.
Claim 3
Dependent Claim
68 words
The photosensitive printing composition of claim 1, wherein the amount of said alkylene oxide polymer ranges from 0.2 to 5 parts by weight for each part by weight of said polycarboxylic acid or polycarboxylic acid salt and wherein said photosensitizing agent ranges from 0.02 to 0.5 parts by weight for each part by weight of said alkylene oxide polymer and said polycarboxylic acid or said polycarboxylic acid salt.
Claim 4
Dependent Claim
26 words
The photosensitive printing composition of claim 1, wherein said alkylene oxide is ethylene oxide, or a mixture of ethylene oxide with propylene oxide or butylene oxide.
Claim 5
Dependent Claim
32 words
The photosensitive printing composition of claim 1, wherein said polycarboxylic acid is styrene-maleic acid copolymer, ethylene maleic acid copolymers, polyacrylic acid, polyvinyl hydrogen phthalate, polyvinyl hydrogen maleate, or polyvinyl naphthoate carboxylic acid.
Claim 6
Dependent Claim
23 words
The photosensitive printing composition of claim 1, wherein said photosensitizing agent is diphenylamine diazonium salt-formaldehyde condensate, potassium bichromate, ammonium bichromate, iodoform or bromoform.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |