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US3843381A Expired / Lapsed US ⏱️ 0.0 years remaining

Transfer process in electrography

Assignee: Kyocera Mita Industrial Co Ltd
•
Filing: 1971-12-28
•
Granted: 1974-10-22
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Expires: 1991-12-28
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Abstract

Abstract 1. A TRANSFER PROCESS FOR PRODUCING A PLURALITY OF COPIES FROM A SINGLE ELECTROSTATIC LATENT IMAGE FORMED ON THE SURFACE OF A SUPPORTING MEMBER COMPRISING THE STEPS OF DEVELOPING THE LATENT IMAGE WITH TONER HAVING THE SAME POLARITY CHARGE AS THE LATENT IMAGE; TRANSFERRING THE DEVELOPED TONER IMAGE FROM THE SUPPORTING MEMBER TO A TRANSFER SHEET WITHOUT SUBSTANTIALLY DISSIPATING THE ELEC TROSTATIC LATENT IMAGE BY PRESSURE-CONTACTING THE SURFACE OF THE SUPPORTING MEMBER AND THE TRANSFER SHEET WITH A PRESSURE WITHING THE RANGE OF FROM 0.1 TO 0.3 KG./CM.2 UTILIZING AN ELECTRICALLY CONDUCTIVE ROLLER, THE TRANSFER SHEET HAVING AN ELECTROSTATIC CAPACITY NOT GREATER THAN THE ELECTROSTATIC CAPACITY OF THE SUPPORTING MEMBER AND HAVING A VOLUME RESISTIVITY WITHIN THE RANGE OF FROM 10**8 TO 10**14 $.CM., THE ELECTRICALLY CONDUCTIVE ROLLER AND THE REAR SURFACE OF THE SUPPORTING MEMBER HAVING SUBSTANTIALLY EQUAL POTENTIALS, AND REPEATING SAID DEVELOPING AND TRANSFERRING STEPS TO PRODUCE A PLURALITY OF COPIES FROM THE SINGLE ELECTROSTATIC LATENT IMAGE.

Inventors

  • 👤 T Aizawa
  • 👤 S Matsumoto
  • 👤 N Yonaha

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 05:01
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/14; G03G13/16; Y; Y10; Y10S; Y10S101/00; Y10S101/37

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 158 words
A TRANSFER PROCESS FOR PRODUCING A PLURALITY OF COPIES FROM A SINGLE ELECTROSTATIC LATENT IMAGE FORMED ON THE SURFACE OF A SUPPORTING MEMBER COMPRISING THE STEPS OF DEVELOPING THE LATENT IMAGE WITH TONER HAVING THE SAME POLARITY CHARGE AS THE LATENT IMAGE; TRANSFERRING THE DEVELOPED TONER IMAGE FROM THE SUPPORTING MEMBER TO A TRANSFER SHEET WITHOUT SUBSTANTIALLY DISSIPATING THE ELEC TROSTATIC LATENT IMAGE BY PRESSURE-CONTACTING THE SURFACE OF THE SUPPORTING MEMBER AND THE TRANSFER SHEET WITH A PRESSURE WITHING THE RANGE OF FROM 0.1 TO 0.3 KG./CM.2 UTILIZING AN ELECTRICALLY CONDUCTIVE ROLLER, THE TRANSFER SHEET HAVING AN ELECTROSTATIC CAPACITY NOT GREATER THAN THE ELECTROSTATIC CAPACITY OF THE SUPPORTING MEMBER AND HAVING A VOLUME RESISTIVITY WITHIN THE RANGE OF FROM 10**8 TO 10**14 $.CM., THE ELECTRICALLY CONDUCTIVE ROLLER AND THE REAR SURFACE OF THE SUPPORTING MEMBER HAVING SUBSTANTIALLY EQUAL POTENTIALS, AND REPEATING SAID DEVELOPING AND TRANSFERRING STEPS TO PRODUCE A PLURALITY OF COPIES FROM THE SINGLE ELECTROSTATIC LATENT IMAGE.
Claim 2
Dependent Claim 158 words
A TRANSFER PROCESS FOR PRODUCING A PLURALITY OF COPIES FROM A SINGLE ELECTROSTATIC LATENT IMAGE FORMED ON THE SURFACE OF A SUPPORTING MEMBER COMPRISING THE STEPS OF DEVELOPING THE LATENT IMAGE WITH TONER HAVING THE SAME POLARITY CHARGE AS THE LATENT IMAGE; TRANSFERRING THE DEVELOPED TONER IMAGE FROM THE SUPPORTING MEMBER TO A TRANSFER SHEET WITHOUT SUBSTANTIALLY DISSIPATING THE ELEC TROSTATIC LATENT IMAGE BY PRESSURE-CONTACTING THE SURFACE OF THE SUPPORTING MEMBER AND THE TRANSFER SHEET WITH A PRESSURE WITHING THE RANGE OF FROM 0.1 TO 0.3 KG./CM.2 UTILIZING AN ELECTRICALLY CONDUCTIVE ROLLER, THE TRANSFER SHEET HAVING AN ELECTROSTATIC CAPACITY NOT GREATER THAN THE ELECTROSTATIC CAPACITY OF THE SUPPORTING MEMBER AND HAVING A VOLUME RESISTIVITY WITHIN THE RANGE OF FROM 10**8 TO 10**14 $.CM., THE ELECTRICALLY CONDUCTIVE ROLLER AND THE REAR SURFACE OF THE SUPPORTING MEMBER HAVING SUBSTANTIALLY EQUAL POTENTIALS, AND REPEATING SAID DEVELOPING AND TRANSFERRING STEPS TO PRODUCE A PLURALITY OF COPIES FROM THE SINGLE ELECTROSTATIC LATENT IMAGE.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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