UST889023I4 - Defensive publication - Google Patents

Defensive publication Download PDF

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Publication number
UST889023I4
UST889023I4 US889023DH UST889023I4 US T889023 I4 UST889023 I4 US T889023I4 US 889023D H US889023D H US 889023DH US T889023 I4 UST889023 I4 US T889023I4
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US
United States
Prior art keywords
benzo
defensive publication
represent
salts
heterocyclylidenemethyl
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of UST889023I4 publication Critical patent/UST889023I4/en
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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
    • G03G5/0622—Heterocyclic compounds
    • G03G5/0624—Heterocyclic compounds containing one hetero ring
    • G03G5/0635—Heterocyclic compounds containing one hetero ring being six-membered
    • G03G5/0637—Heterocyclic compounds containing one hetero ring being six-membered containing one hetero atom

Definitions

  • Benzo[b]pyrylium salts and benzo[b]thiapyry1ium salts of the formula are sensitizers for photoconductors wherein R R R R R and R may represent separate moieties including amonoor polycyclic, heterocyclylidenemethyl radical wherein; when taken together, any two of R R R and R attached to adjacent carbon atoms represent the atoms necessary to form a fused ring; and wherein X is a hetero atom, e.g. oxygen or sulfur.

Abstract

BENZO(B)PYRYLIUM SALTS AND BENZO(B)THIAPYRYLIUM SALTS OF THE FORMULA
ARE SENSITIZERS FOR PHOTOCONDUCTORS WHEREIN R1, R2, R3, R4, R5, AND R6 MAY REPRESENT SEPARATE MOIETIES INCLUDING AMONO- OR POLYCYCLIC, HETEROCYCLYLIDENEMETHYL RADICAL WHEREIN; WHEN TAKEN TOGETHER, ANY TWO OF R3, R4, R5, AND R6 ATTACHED TO ADJACENT CARBON ATOMS REPRESENT THE ATOMS NECESSARY TO FORM A FUSED RING; AND WHEREIN X IS A HETERO ATOM, E.G. OXYGEN OR SULFUR.

Description

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may he purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED AUGUST 31, 1971 T889,023 ELECTROPHOTOGRAPHIC COMPOSITION AND ELEMENTS George A. Reynolds and James A. Van Allan, Kodak Park Works, Rochester, NY. 14650 Filed Oct. 5, 1970, Ser. No. 78,613 Int. Cl. G03g 5/00, 7/00 US. Cl. 96-1.6 No Drawing. 37 Pages Specification Benzo[b]pyrylium salts and benzo[b]thiapyry1ium salts of the formula are sensitizers for photoconductors wherein R R R R R and R may represent separate moieties including amonoor polycyclic, heterocyclylidenemethyl radical wherein; when taken together, any two of R R R and R attached to adjacent carbon atoms represent the atoms necessary to form a fused ring; and wherein X is a hetero atom, e.g. oxygen or sulfur.
US889023D 1970-10-05 1970-10-05 Defensive publication Pending UST889023I4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7861370A 1970-10-05 1970-10-05

Publications (1)

Publication Number Publication Date
UST889023I4 true UST889023I4 (en) 1971-08-31

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ID=22145168

Family Applications (1)

Application Number Title Priority Date Filing Date
US889023D Pending UST889023I4 (en) 1970-10-05 1970-10-05 Defensive publication

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US (1) UST889023I4 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045220A (en) 1975-07-14 1977-08-30 Eastman Kodak Company Low color photoconductive insulating compositions comprising nitrogen-free photoconductor and benzopyrilium sensitizer
US5627014A (en) * 1990-11-21 1997-05-06 Polaroid Corporation Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use
US5977351A (en) * 1990-11-21 1999-11-02 Polaroid Corporation Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045220A (en) 1975-07-14 1977-08-30 Eastman Kodak Company Low color photoconductive insulating compositions comprising nitrogen-free photoconductor and benzopyrilium sensitizer
US5627014A (en) * 1990-11-21 1997-05-06 Polaroid Corporation Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use
US5977351A (en) * 1990-11-21 1999-11-02 Polaroid Corporation Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use

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