US3898672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrosensitive recording member
Assignee: Ricoh Co Ltd
•
Filing: 1974-06-10
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Granted: 1975-08-05
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Expires: 1994-06-10
Abstract
Abstract Electrosensitive recording member in which blackish pattern is electrically formed on a recording layer by sparking between a needle-like electrode (stylus) and the recording layer comprising a binder and an electrically reducible metal compound. Copper iodide (CuI) is specifically included in the recording layer to increase its electroconductivity.
Inventors
- 👤 Akiyoshi Yasumori
- 👤 Katsuichi Ohta
- 👤 Makoto Kunikane
- 👤 Michiharu Abe
- 👤 Shuichi Karasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:56
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20; G; G01; G01D; G01D15/00; G01D15/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993; Y10T428/31996
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
AN ELECTROSENSITIVE RECORDING MEMBER COMPRISING A NONCONDUCTIVE SUPPORT AND AN ELECTROSENSITIVE RECORDEING LAYER FORMED ON THE SUPPORT, SAID ELECTROSENSITIVE RECORDING LAYER CONTAINING A BINDER HAVING A MIXTURE OF AN ELECTRICALLY REDUCIBLE METAL COMPOUND AND COPPER IODIDE (CUL) DDISPERSED THEREIN, THE WEIGHT RATIO OF MIXTURE TO BINDER BEING FROM 5:1 TO 10:1.
Claim 2
Dependent Claim
51 words
AN ELECTROSENSITIVE RECORDING MEMBER COMPRISING A NONCONDUCTIVE SUPPORT AND AN ELECTROSENSITIVE RECORDEING LAYER FORMED ON THE SUPPORT, SAID ELECTROSENSITIVE RECORDING LAYER CONTAINING A BINDER HAVING A MIXTURE OF AN ELECTRICALLY REDUCIBLE METAL COMPOUND AND COPPER IODIDE (CUL) DDISPERSED THEREIN, THE WEIGHT RATIO OF MIXTURE TO BINDER BEING FROM 5:1 TO 10:1.
Claim 3
Dependent Claim
45 words
An electrosensitive recording member of claim 1 in which said mixture of an electrically reducible metal compound and copper iodide is a mixture of one part by weight of the electrically reducible metal compound and from 1 to 10 parts by weight of copper iodide.
Claim 4
Dependent Claim
29 words
An electrosensitive recording member of claim 1 in which said electrically reducible metal compound is one selected from the group consisting of ZnO, TiO2, V2O5, H2MoO4, H2WO4 and (NH4)6Mo7O24.4H2O.
Claim 5
Dependent Claim
13 words
An electrosensitive recording member of claim 1 wherein the nonconductive support is paper.
Claim 6
Dependent Claim
14 words
An electrosensitive recording member of claim 1 wherein the nonconductive support is a plastic.
Claim 7
Dependent Claim
45 words
An electrosensitive recording member of claim 1 in which said mixture of an electrically reducible metal compound in copper iodide is a mixture of 1 part by weight of the electrically reducible metal compound and from 1 to 10 parts by weight of copper iodide.
References Cited (Backward Citations)
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US2940941A
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US3138547A
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US3263604A
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US3245833A
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US3516911A
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US3684746A
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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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |