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US4587188A Expired / Lapsed US ⏱️ 0.0 years remaining

Phthalocyanine photoconductor for electrophotography

Assignee: Oki Electric Industry Co Ltd
•
Filing: 1983-08-31
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Granted: 1986-05-06
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Expires: 2003-08-31
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Abstract

Abstract A photoconductor for electrophotography prepared by forming a carrier generation layer made from an organic photoconducting material on a conductive substrate and further forming a carrier transport layer on the carrier generation layer wherein the organic photoconducting material has a basic structure corresponding to phthalocyanine having the following general formula: ##STR1## wherein a central metal Me is selected from the group consisting of indium, gallium and aluminum, and X is a combined halogen, and the above phthalocyanine is the one in which some hydrogen of benzene rings positioned around the phthalocyanine ring of the above basic structure are substituted by the same halogen with the combined halogen, and furthermore the above organic photoconducting material may be a mixture of the former phthalocyanine and the latter phthalocyanine.

Inventors

  • 👤 Masakazu Kato
  • 👤 Yoichi Nishioka
  • 👤 Katsuaki Kaifu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 16:15
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/06; C09B47/067; C09B47/045; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 103 words
In a layered photoconductor for electrophotography, said photoconductor comprising: a carrier generation layer comprising an organic photoconducting material which absorbs light and generates carriers and a carrier transport layer which transports said carriers to said carrier generation layer, the improvement wherein said organic photoconducting material comprises a phthalocyanine having the following formula: ##STR3## wherein Me is selected from the group consisting of indium and gallium, Me is indium or gallium X is chlorine or bromine, X n represents the same halogen as X but which is substituted in at least one benzene ring in the phthalocyanine nucleus and n is greater than 0.
Claim 2
Dependent Claim 103 words
In a layered photoconductor for electrophotography, said photoconductor comprising: a carrier generation layer comprising an organic photoconducting material which absorbs light and generates carriers and a carrier transport layer which transports said carriers to said carrier generation layer, the improvement wherein said organic photoconducting material comprises a phthalocyanine having the following formula: ##STR3## wherein Me is selected from the group consisting of indium and gallium, Me is indium or gallium X is chlorine or bromine, X n represents the same halogen as X but which is substituted in at least one benzene ring in the phthalocyanine nucleus and n is greater than 0.
Claim 3
Dependent Claim 16 words
The layered photoconductor according to claim 1 wherein n, as an average, is up to 2.
Claim 4
Dependent Claim 21 words
The layered photoconductor according to claim 1 wherein 2 or more hydrogens on said benzene rings are substituted by said halogens.
Claim 5
Dependent Claim 15 words
The layered photoconductor according to claim 1 wherein Me is indium and X is chlorine.
Claim 6
Dependent Claim 15 words
The layered photoconductor according to claim 1 wherein Me is indium and X is bromine.
Claim 7
Dependent Claim 16 words
The layered photoconductor according to claim 1 wherein the Me is gallium and X is chlorine.
Claim 8
Dependent Claim 16 words
The the layered photoconductor according to claim 1 wherein Me is gallium and X is bromine.

References Cited (Backward Citations)

US3816118A Cited
US3895944A Cited
JPS57178245A Cited
JPS57211149A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-05-05 1989-11-04 1990-05-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-05-05 1993-11-04 1994-05-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-05-05 1997-11-04 1998-05-06 $7700.00 Window Closed / Lapsed

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