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US3704119A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrophotographic process using toner of same refractive index as organic photoconductive layer

Assignee: Fujifilm Holdings Corp
•
Filing: 1970-07-31
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Granted: 1972-11-28
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Expires: 1990-07-31
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Abstract

Abstract A METHOD FOR MAKING ELECTROPHOTOGRAPHIC REPRODUCTIONS WHICH COMPRISES THE FIRST STEP OF FORMING AN ELECTROSTATIC LATENT IMAGE ON AN ORGANIC POTOCONDUCTIVE LAYER WHICH INCLUDES COMPONENT MATERIALS OF SUBSTANTIALLY EQUAL REFLECTIVE INDICES, AND WHICH INCLUDES LIGHT SCATTERING INNER SURFACES HOMOGENEOUSLY THROUGHOUT ITS THICKNESS OR NEAR THE SURFACE OF THE LAYER WHEREBY THE LAYER HAS AN OPAQUE APPEARANCE. THE LATENT IMAGE IS THEN DEVELOPED ACCORDING TO ANY OF THE KNOWN ELECTROPHOTOGRAPHIC DEVELOPMENT PROCEDURES, THUS CONVERTING THE LATENT IMAGE INTO A TONER IMAGE, WHICH DECREASES THE LIGHT-SCATTERING PROPERTY OF THE ORGANIC PHOTOCONDUCTIVE LAYER WHEN IMPREGNATED INTO THE LAYER. THE TONER DEPOSITED AREA OF THE LAYER IS THEN MADE MORE TRANSPARENT THAN THE REMAINING AREAS BY THE ACTION OF HEAT AND/OR A SOLVENT FOR THE TONER.

Inventors

  • 👤 Satoru Honjo
  • 👤 Syu Watarai
  • 👤 Hisatake Ono

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 07:49
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08702; G03G9/08735; G03G13/00; G03G13/22; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G9/08706; G03G9/08742; G03G9/08746; G03G9/08748; G03G9/08775

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) 1975-11-28 1976-05-29 1976-11-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-28 1980-05-29 1980-11-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-28 1984-05-29 1984-11-28 $7700.00 Window Closed / Lapsed

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