US3294534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype photoprinting material susceptible to thermal development
Assignee: GAF Chemicals Corp
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Filing: 1963-07-01
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Granted: 1966-12-27
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Bernard I Halperin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
100 words
LIGHT-SENSTIVE DIAZOTYPE PHOTOPRINTING MATERIAL HAVING ON ONE SURFACE OF A SUPPORTING SHEET, TWO SUPERPOSED DRIED COATING OF AN AQUEOUS LATEX DISPERSION OF A SYNTHETIC ORGANIC FILM-FORMING POLYMER, ONE OF SAID COATING CONTAINING A LIGHT-SENSITIVE DIAZONIUM COMPOUND AND AN ACID STABILIZER THEREFORE, AND THE OTHER CONTAINING AN ACID STABILIZER THEREFORE, AND THE OTHER CONTAINING CONSISTING OF THE ALKALI METAL AND NITROGEN BASE SALTS OF ORGANIC ACIDS, WHICH IS CONVERTED ON HEATING TO TEMPERATUURED FROM 100 TO 200*C. TO AN ALKALINE COMPOUND WHICH IS SUBSTANTIALLY NON-VOLATILE AT THE CONVERSION TEMPERATURE, AND AN AZO COUPLING COMPONENT IN AT LEAST ONE OF SAID COATINGS.
Claim 2
Dependent Claim
100 words
LIGHT-SENSTIVE DIAZOTYPE PHOTOPRINTING MATERIAL HAVING ON ONE SURFACE OF A SUPPORTING SHEET, TWO SUPERPOSED DRIED COATING OF AN AQUEOUS LATEX DISPERSION OF A SYNTHETIC ORGANIC FILM-FORMING POLYMER, ONE OF SAID COATING CONTAINING A LIGHT-SENSITIVE DIAZONIUM COMPOUND AND AN ACID STABILIZER THEREFORE, AND THE OTHER CONTAINING AN ACID STABILIZER THEREFORE, AND THE OTHER CONTAINING CONSISTING OF THE ALKALI METAL AND NITROGEN BASE SALTS OF ORGANIC ACIDS, WHICH IS CONVERTED ON HEATING TO TEMPERATUURED FROM 100 TO 200*C. TO AN ALKALINE COMPOUND WHICH IS SUBSTANTIALLY NON-VOLATILE AT THE CONVERSION TEMPERATURE, AND AN AZO COUPLING COMPONENT IN AT LEAST ONE OF SAID COATINGS.
Claim 3
Dependent Claim
60 words
A PROCESS FOR MAKING DIAZOTYPE PHOTOCOPIES WHICH COMPRISES EXPOSING THE LIGHT-SENSITIVE DIAZOTYPE PHOTOPRINTING MATERIAL AS DEFINED IN CLAIM 1 TO ACTINIC LIGHT UNDER A RELATIVELY OPAQUE PATTERN CARRIED ON A RELATIVELY TRANSLUCENT BACKGROUND UNTIL SUBSTANTIAL DECOMPOSITION OF THE LIGHT-SENSITIVE DIAZONIUM COMPOUND OCCURS IN THE LIGHT-STRUCK AREAS, AND HEATING RESLUTING SHEET AT A TEMPERATURE OF 100 TO 200*C TO EFFECT DEVELOPMENT.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |