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US3772159A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical recording medium and process for recording thereon

Assignee: Jujo Paper Co Ltd
•
Filing: 1971-12-27
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Granted: 1973-11-13
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Expires: 1991-12-27
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Abstract

Abstract The electrical recording medium comprises a composite mounted on a base sheet, said composite comprises an electron-donative color reactant, an electron-acceptive material and an electric conductive material, the electron-donative color reactant and the electron-acceptive m material being reacted thereby the color reactant coloring by itself, and said reaction brough about by multiplex effect of the electrolytic reaction and/or the exothermic reaction by applying the electric current. The recording process for recording on said electrical recording medium comprises the steps of mounting a composite comprising an electron-donative color reactant, an electron-acceptive material and an electric conductive material upon a base sheet, making a reaction between the electron-donative color reactant and the electron-acceptive material owing to an effect of or a multiplex effect of an electrolysis and/or an exothermic reaction, and thereby coloring the color reactant.

Inventors

  • 👤 T Sakata
  • 👤 N Yamato
  • 👤 F Fujimura
  • 👤 T Fukawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 16:53
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 17 words
An electrical recording medium as claimed in claim 1, wherein the electrically conductive material is an electrolyte.
Claim 2
Dependent Claim 16 words
An electrical recording medium as claimed in claim 1, wherein the base sheet is electrically conductive.
Claim 3
Dependent Claim 66 words
An electrical process for recording on an electrical recording medium comprising the steps of mounting a composite comprising an electron-donative color reactant, an electron-acceptive material and an electrically conductive material as defined in claim 1 upon a base sheet, applying an electric current to said recording medium thereby effecting a reaction between the electron-donative color reactant and the electron-acceptive material and thereby coloring the color reactant.

References Cited (Backward Citations)

US3434878A Cited
US3518038A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-12 1977-05-14 1977-11-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-12 1981-05-14 1981-11-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-12 1985-05-14 1985-11-13 $7700.00 Window Closed / Lapsed

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