US4403232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrosensitive recording paper having improved recording density
Assignee: Exxon Mobil Corp
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Filing: 1982-02-03
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Granted: 1983-09-06
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Expires: 2002-02-03
Abstract
Abstract An electrosensitive recording member having a base support, conductive polyester layer on the base support, and a contrasting surface recording layer is disclosed. Improved recording density is achieved by incorporating a divalent metal salt of organic acid containing up to 13 carbon atoms into the conductive polyester layer.
Inventors
- 👤 Joseph M. Kropac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/06; G01D15/08; B; B41; B41M; B41M5/00; B41M5/24; B41M5/245; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
95 words
An electrosensitive recording member comprising: (a) a base support; (b) a conductive polyester layer on said support, comprising a polyester resin matrix, a conductive pigment dispersed in said matrix and an effective amount of a multivalent metal salt of an organic acid containing up to 13 carbon atoms to improve the image density of recording member; and (c) a contrasting surface recording layer with respect to said polyester layer, said recording surface layer being vaporizable at the temperature developed during passage of marking current through said medium to selectively reveal the underlying contrasting polyester layer.
Claim 2
Dependent Claim
95 words
An electrosensitive recording member comprising: (a) a base support; (b) a conductive polyester layer on said support, comprising a polyester resin matrix, a conductive pigment dispersed in said matrix and an effective amount of a multivalent metal salt of an organic acid containing up to 13 carbon atoms to improve the image density of recording member; and (c) a contrasting surface recording layer with respect to said polyester layer, said recording surface layer being vaporizable at the temperature developed during passage of marking current through said medium to selectively reveal the underlying contrasting polyester layer.
Claim 3
Dependent Claim
13 words
The electrosensitive recording member of claim 1 wherein said base support is conductive.
Claim 4
Dependent Claim
13 words
The electrosensitive recording member of claim 2 wherein said conductive pigment is carbon.
Claim 5
Dependent Claim
33 words
The electrosensitive recording member of claim 3 wherein said conductive polyester layer contains between 0.5 and 15% by weight of said multivalent metal salt based upon the weight of carbon in said layer.
Claim 6
Dependent Claim
21 words
The electrosensitive recording member of claim 4 wherein said multivalent metal salt is a divalent metal salt of a saturated acid.
Claim 7
Dependent Claim
20 words
The electrosensitive recording member of claim 4 wherein said multivalent metal salt is a divalent metal salt of naphthenic acid.
Claim 8
Dependent Claim
15 words
The electrosensitive recording member of claim 6 wherein said multivalent metal salt is calcium naphthenate.
Claim 9
Dependent Claim
39 words
The electrosensitive recording member of claim 1 further comprising a base conductive layer between said base support member and said conductive polyester layer, said base conductive layer having a resistivity greater than the resistivity of said conductive polyester layer.
Claim 10
Dependent Claim
14 words
The electrosensitive recording member of claim 8 wherein said base member is electrically non-conductive.
Claim 11
Dependent Claim
13 words
The electrosensitive recording member of claim 9 wherein said base member is paper.
Claim 12
Dependent Claim
13 words
The electrosensitive recording member of claim 10 wherein said conductive pigment is carbon.
Claim 13
Dependent Claim
33 words
The electrosensitive recording member of claim 11 wherein said conductive polyester layer contains between 0.5 and 15% by weight of said multivalent metal salt based upon the weight of carbon in said layer.
Claim 14
Dependent Claim
21 words
The electrosensitive recording member of claim 11 wherein said multivalent metal salt is a divalent small salt of a saturated acid.
Claim 15
Dependent Claim
20 words
The electrosensitive recording member of claim 13 wherein said multivalent metal salt is a divalent metal salt of naphthenic acid.
Claim 16
Dependent Claim
15 words
The electrosensitive recording member of claim 14 wherein said multivalent metal salt is calcium naphthenate.
Claim 17
Dependent Claim
14 words
The electrosensitive recording member of claim 15 wherein said conductive pigment is carbon black.
Claim 18
Dependent Claim
38 words
The electrosensitive recording member of claim 15 wherein said conductive pigment is present in said polyester matrix in an amount sufficient to provide the layer with a resistivity between said base conductive layer and said surface recording layer.
Claim 19
Dependent Claim
16 words
The electrosensitive recording member of claim 8 wherein said base conductive layer is a metal foil.
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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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |