US4440847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazo material with waterborne drafting subbing composition of acrylic resin and aziridine and process of using
Assignee: OCE-BRUNING Inc A CORP OF DELAWARE
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Filing: 1982-08-20
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Granted: 1984-04-03
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Expires: 2002-08-20
Abstract
Abstract A method is disclosed for preparing an oleophilic drafting film and related light-sensitive reprographic member. An aqueous drafting composition is disclosed which is both compatible with hydrophobic material and diazo light-sensitive compositions which provides for an expedient method of fabricating drafting film. The drafting composition comprises an acrylic resin emulsion containing an aziridine hardening agent.
Inventors
- 👤 Jesse E. Whittemore, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:15
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60; G03C1/76; G03C1/95; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A light sensitive imaging member capable of being written on and erased with increased hardness and enhanced adhesion consisting essentially of an oleophilic support substrate, a dried drafting layer coated from a waterborne latex dispersion consisting essentially of the reaction product of an acrylic resin and an aziridine cross-linking agent on at least one surface thereof and a layer of a light-sensitive diazo composition on at least one surface of said drafting layer.
Claim 2
Dependent Claim
73 words
A light sensitive imaging member capable of being written on and erased with increased hardness and enhanced adhesion consisting essentially of an oleophilic support substrate, a dried drafting layer coated from a waterborne latex dispersion consisting essentially of the reaction product of an acrylic resin and an aziridine cross-linking agent on at least one surface thereof and a layer of a light-sensitive diazo composition on at least one surface of said drafting layer.
Claim 3
Dependent Claim
32 words
The imaging member of claim 1, wherein said dried acrylic resin layer is from 7.5 to 15 microns thick and said diazo layer has a thickness of from 15 to 50 microns.
Claim 4
Dependent Claim
46 words
An imaging process which comprises providing the light-sensitive imaging member of claim 1, selectively exposing said diazo composition to actinic radiation, and developing said exposed composition to an alkaline environment in the presence of a coupling agent for said diazo composition to produce a visible image.
Claim 5
Dependent Claim
12 words
The method of claim 3, wherein said alkaline environment comprises ammonia vapors.
Claim 6
Dependent Claim
12 words
The method of claim 3, wherein said alkaline environment comprises amine vapors.
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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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |