US5208093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film construction for use in a plain paper copier
Assignee: 3M Innovative Properties Co
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Filing: 1991-11-05
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Granted: 1993-05-04
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Expires: 2011-11-05
Abstract
Abstract An electrographic article comprising a polymeric film having at least one polymeric receptor layer coated on at least one side thereof, said receptor layer having an equivalent or lower storage elasticity modulus than a toner resin used for forming images on said article.
Inventors
- 👤 Joseph C. Carls
- 👤 Alan J. Herbert
- 👤 Donald J. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:01
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/0208; G03G5/0214; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
An electrographic article capable of providing a full color image when said image is projected, comprising a transparent polymeric film having at least one polymeric receptor layer coated on at least one side thereof, said receptor layer having an equivalent or lower storage electricity modulus that a toner resin used for forming images on said article.
Claim 2
Dependent Claim
56 words
An electrographic article capable of providing a full color image when said image is projected, comprising a transparent polymeric film having at least one polymeric receptor layer coated on at least one side thereof, said receptor layer having an equivalent or lower storage electricity modulus that a toner resin used for forming images on said article.
Claim 3
Dependent Claim
22 words
An electrographic article according to claim 1 wherein said polymeric receptor layer has a storage elasticity modulus equivalent to the toner resin.
Claim 4
Dependent Claim
33 words
An electrographic article according to claim 1 wherein said receptor layer comprises at least one compound selected from the group consisting of bisphenol A, monomers thereof, polymers comprising bisphenol A, and derivatives thereof.
Claim 5
Dependent Claim
23 words
An electrographic article according to claim 1 wherein said receptor layer has a thickness of from about 0.5 μm to about 10 μm.
Claim 6
Dependent Claim
61 words
An electrographic article according to claim 1 further comprising particles selected from the group consisting of polymeric particles, silica particles and starch particles, at least 50% of said particles protruding from the polymeric receptor layer prior to imaging, said particles being present in an amount such that distribution in the polymeric receptor layer is greater than about 2 particles/mm 2 .
Claim 7
Dependent Claim
23 words
An electrographic article according to claim 5 wherein said particles have an average diameter of from about 5 μm to about 25 μm.
Claim 8
Dependent Claim
23 words
An electrographic article according to claim 6 wherein said particles have an average diameter of from about 10 μm to about 20 μm.
Claim 9
Dependent Claim
47 words
An electrographic article according to claim 5 wherein said particles are polymeric particles selected from the group consisting of polymethylmethacrylates, polybutylmethacrylates, polyethylene, and polystyrenes, said particles being present in an amount such that distribution in the polymeric receptor layer is greater than about 5 particles/mm 2 .
Claim 10
Dependent Claim
12 words
An electrographic article according to claim 8 wherein said particles are polymethylmethacrylate.
Claim 11
Dependent Claim
13 words
An electrographic article according to claim 5 wherein said particles are starch particles.
Claim 12
Dependent Claim
21 words
An electrographic article according to claim 10 wherein at least 75% of said starch particles protruding from the polymeric receptor layer.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |