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US3730710A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrostatic imaging employing a dot electrode

Assignee: Ricoh Co Ltd
•
Filing: 1970-07-13
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Granted: 1973-05-01
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Expires: 1990-07-13
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Abstract

Abstract AN ELECTROSTATIC IMAGE RECORDING METHOD IS PROVIDED. FOR PREPARING A PHOTORECEPTOR, A TRANSPARENT ELECTRODE IS MOUNTED ON A TRANSPARENT SUPPORT, A PHOTOCONDUCTOR LAYER IS LAID ON SAID ELECTRODE AND A PLURALITY OF SEPARATE DO ELECTRODES ARE FURTHER PROVIDED ON SAID PHOTOCONDUCTOR LAYER. A RECORDER HAVING AN INSULATING LAYER ON AN ELECTRODE IS POSITIONED SO THAT SAID DOT ELECTRODES OF SAID PHOTORECEPTOR AND SAID INSULATING LAYER OF SAID RECORDER MAY BE FACED WITH EACH OTHER. A POTENTIAL IS APPLIED TO SAID TRANSPARENT ELECTRODEOF SAID PHOTORECEPTOR AND SAID ELECTRODE OF SAID RECORDER, AND UNDER THIS POTENTIAL APPLYING CONDITION, THEY ARE EXPOSED TO LIGHT, WHEREBY A CHARGED IMAGE IS FORMED ON SAID RECORDER. D R A W I N G

Inventors

  • 👤 W Ohta

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 06:51
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G5/00; G03G5/02

Claims Analysis

Total Claims: 0
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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) 1976-04-30 1976-10-30 1977-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-30 1980-10-30 1981-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-30 1984-10-30 1985-05-01 $7700.00 Window Closed / Lapsed

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