UST889023I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- 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
- Authority
- US
- United States
- Prior art keywords
- benzo
- defensive publication
- represent
- salts
- heterocyclylidenemethyl
- Prior art date
- 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
Links
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.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
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.
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.
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 |
Family
ID=22145168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US889023D Pending UST889023I4 (en) | 1970-10-05 | 1970-10-05 | Defensive publication |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST889023I4 (en) |
Cited By (3)
| 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 |
-
1970
- 1970-10-05 US US889023D patent/UST889023I4/en active Pending
Cited By (3)
| 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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