US5204201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric systems for overcoating organic photoreceptors used in liquid development xerographic applications
Assignee: Xerox Corp
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Filing: 1991-12-18
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Granted: 1993-04-20
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Expires: 2011-12-18
Abstract
Abstract An improved organic photoreceptor is disclosed which is coated with a clear polymer film to prevent aromatic amine transport molecule leakage and binder cracking when exposed to liquid toner developers. The polymer film may also be overcoated with a polysiloxane layer to provide additional abrasion resistance.
Inventors
- 👤 Richard L. Schank
- 👤 John A. Bergfjord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14747; G03G5/14773; G03G5/14717; G03G5/14734; G03G5/14791
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A coated photorecptor element comprising a charge generation layer and a charge transport layer, wherein said charge transport layer comprises an aromatic amine transport molecule, wherein said transport layer is coated with a layer of a transport and conductive emulsion polymer that is unaffected by hydrocarbon solvents and that suppresses leaching of said transport molecule from said transport layer.
Claim 2
Dependent Claim
59 words
A coated photorecptor element comprising a charge generation layer and a charge transport layer, wherein said charge transport layer comprises an aromatic amine transport molecule, wherein said transport layer is coated with a layer of a transport and conductive emulsion polymer that is unaffected by hydrocarbon solvents and that suppresses leaching of said transport molecule from said transport layer.
Claim 3
Dependent Claim
11 words
The element of claim 1 wherein said arylamine molecule is N,N'-diphenyl-N,N'-bis(3-methylphenyl)-(1,1'-biphenyl)-4,4'-diamine.
Claim 4
Dependent Claim
13 words
The element of claim 1 wherein said polymer layer comprises an acrylate polymer.
Claim 5
Dependent Claim
15 words
The element of claim 3 wherein said polymer layer comprises a crosslinked acrylic emulsion polymer.
Claim 6
Dependent Claim
15 words
The element of claim 1 wherein said polymer layer further comprises an ionic quaternary salt.
Claim 7
Dependent Claim
13 words
The element of claim 5 wherein said salt is trimethoxysilyl propyl-N,N,N-trimethyl ammonium chloride.
Claim 8
Dependent Claim
15 words
The element of claim 1 wherein said polymer layer is overcoated with a protective coating.
Claim 9
Dependent Claim
14 words
The element of claim 7 wherein said protective layer coating is a polysiloxane coating.
Claim 10
Dependent Claim
15 words
The element of claim 7 wherein said protective coating further comprises an ionic quaternary salt.
Claim 11
Dependent Claim
13 words
The element of claim 9 wherein said salt is trimethoxysilyl propyl-N,N,N-trimethyl ammonium chloride.
Claim 12
Dependent Claim
67 words
A coated photoreceptor element comprising a charge generation layer and a charge transport layer, wherein said charge transport layer comprises N,N'-diphenyl-N,N'-bis(3-methylphenyl)-(1,1'-biphenyl)-4,4'-diamine, wherein said transport layer is coated with a polymer layer comprising a mixture of a crosslinked acrylic emulsion polymer and trimethoxysilyl propyl-N,N,N-trimethyl ammonium chloride, and wherein said polymer layer is coated with an overcoat layer comprising a mixture of a polysiloxane and trimethoxysilyl propyl-N,N,N-trimethyl ammonium chloride.
Claim 13
Dependent Claim
67 words
A coated photoreceptor element comprising a charge generation layer and a charge transport layer, wherein said charge transport layer comprises N,N'-diphenyl-N,N'-bis(3-methylphenyl)-(1,1'-biphenyl)-4,4'-diamine, wherein said transport layer is coated with a polymer layer comprising a mixture of a crosslinked acrylic emulsion polymer and trimethoxysilyl propyl-N,N,N-trimethyl ammonium chloride, and wherein said polymer layer is coated with an overcoat layer comprising a mixture of a polysiloxane and trimethoxysilyl propyl-N,N,N-trimethyl ammonium chloride.
References Cited (Backward Citations)
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JPS5625747A
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US4409309A
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JPS5880642A
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US4407920A
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JPS6464955A
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JPH0239056A
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JPH0293756A
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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) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |