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US4147541A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrostatic imaging member with acid lubricant

Assignee: Xerox Corp
•
Filing: 1974-06-19
•
Granted: 1979-04-03
•
Expires: 1994-06-19
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Abstract

Abstract An improved electrostatographic process wherein the imaging surface of the imaging member is treated with a lubricating effective amount of a compound selected from the group consisting of ortho-, meta-, para-phthalic acid, their corresponding metal or ammonium salts, and mixtures thereof. Controlled treatment of the imaging surfaces of the imaging member with the above compound(s) facilitates transfer of the developed image from the imaging member to a receiving sheet and removal of toner residues from the imaging surface upon cleaning. The imaging member element of the apparatus used in carrying out this process is covered with a thin film of lubricant over substantially all of its imaging surface thereby greatly improving toner transfer and removal.

Inventors

  • 👤 Nero R. Lindblad
  • 👤 Gordon E. Johnson
  • 👤 James H. Sharp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 05:10
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G21/00; G03G5/005; Y; Y10; Y10S; Y10S430/00; Y10S430/162

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 48 words
An electrostatographic imaging member comprising a photoconductive imaging surface provided with an adherent film of lubricant distributed over substantially all of said surface, said lubricant having at least one compound selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, the metal and ammonium salts thereof.
Claim 2
Dependent Claim 48 words
An electrostatographic imaging member comprising a photoconductive imaging surface provided with an adherent film of lubricant distributed over substantially all of said surface, said lubricant having at least one compound selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, the metal and ammonium salts thereof.
Claim 3
Dependent Claim 22 words
The electrostatographic imaging member of claim 1, wherein the adherent film of lubricant has an average thickness of at least 1 A.
Claim 4
Dependent Claim 13 words
The electrostatographic imaging member of claim 1, wherein said imaging member is plate-like.
Claim 5
Dependent Claim 18 words
The electrostatographic imaging member of claim 1, wherein said imaging member is provided with an endless imaging surface.
Claim 6
Dependent Claim 13 words
The electrostatographic imaging member of claim 1, wherein the photoconductive surface is selenium.
Claim 7
Dependent Claim 15 words
The electrostatographic imaging member of claim 1, wherein said imaging surface comprises a flexible material.
Claim 8
Dependent Claim 13 words
The electrostatographic imaging member of claim 1, wherein the lubricant is terephthalic acid.

References Cited (Backward Citations)

US3607261A Cited
US3501294A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-04-02 1982-10-02 1983-04-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-04-02 1986-10-02 1987-04-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-04-02 1990-10-02 1991-04-03 $7700.00 Window Closed / Lapsed

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