US3798032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroconductive coating, electrostatographic copy sheet, and methods of making and using the same
Assignee: Weyerhaeuser Co
•
Filing: 1971-10-06
•
Granted: 1974-03-19
•
Expires: 1991-10-06
Abstract
Abstract An improved electroconductive coating is made by incorporating in its formulation both an organic film-forming polymer and certain low molecular weight monomeric quaternary ammonium compounds. An improved electrostatographic copy sheet is made by combining a conductive layer comprising said improved electroconductive coating and a dielectric or photoconductive printing layer.
Inventors
- 👤 L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
21 words
The paper of claim 1 wherein said choline chloride comprises from 5 to 95 percent by weight of said electroconductive layer.
Claim 2
Dependent Claim
21 words
The paper of claim 1 wherein said choline chloride comprises from 20 to 50 percent by weight of said electroconductive layer.
Claim 3
Dependent Claim
39 words
In an electrostatographic copy paper, including a printing layer having a surface capable of receiving and retaining an electrostatic charge, the improvement comprising an electroconductive layer underlying said printing layer and comprising choline chloride and an organic, film-forming polymer.
Claim 4
Dependent Claim
23 words
The copy paper of claim 4 wherein said printing layer comprises a substance selected from the group consisting of dielectric and photoconductive substances.
Claim 5
Dependent Claim
16 words
The copy paper of claim 4 wherein said printing layer is comprised of photoconductive zinc oxide.
Claim 6
Dependent Claim
21 words
The paper of claim 4 wherein said choline chloride comprises from 5 to 95 percent by weight of said electroconductive layer.
Claim 7
Dependent Claim
21 words
The paper of claim 4 wherein said choline chloride comprises from 20 to 50 percent by weight of said electroconductive layer.
Claim 8
Dependent Claim
48 words
In an electrostatographic copying process wherein a liquid toner is applied to an electrostatographic copy paper including a printing layer having an electrostatic charge pattern thereon and an electroconductive layer underlying said printing layer, the improvement wherein said electroconductive layer comprises choline chloride and an organic, film-forming polymer.
Claim 9
Dependent Claim
21 words
The process of claim 9 wherein said choline chloride comprises from 5 to 95 percent by weight of said electroconductive layer.
Claim 10
Dependent Claim
21 words
The process of claim 9 wherein said choline chloride comprises from 20 to 50 percent by weight of said electroconductive layer.
References Cited (Backward Citations)
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |