US3852065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive bisphenyl thiocompounds linked by bridging organic group
Assignee: Canon Production Printing Holding BV
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Filing: 1971-05-14
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Granted: 1974-12-03
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Expires: 1991-05-14
Abstract
Abstract A photoconductive composition useful in electrophotographic processes is provided by utilizing in admixture with an electrically insulating polymeric organic binder a monomeric organic photoconductor which is a bisphenylthio compound wherein at least one of the phenylthio residues carries a para-tertiary amino group and the two thio atoms are linked together by a bridging organic group which may be an aliphatic, atomatic or heterocyclic residue. Preferably, the two phenylthio residues carry similar paratertiary amino groups. The composition is used in the form of a photoconductive layer, either self-supported or carried on a support which may be paper or the like or a conductive surface, depending upon the manner of utilization. A fine powder of the composition containing a sensitizing dysestuff is useful in phototoner processes.
Inventors
- 👤 A Hectors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/062
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
24 words
A PHOTOCONDUCTIVE COMPOSITION COMPRISING IN ADMIXTURE WITH AN ELECTRICALLY INSULATING POLYMERIC ORGANIC BINDER A MONOMERIC ORGANIC PHOTOCONDUCTOR WHICH IS A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
24 words
A PHOTOCONDUCTIVE COMPOSITION COMPRISING IN ADMIXTURE WITH AN ELECTRICALLY INSULATING POLYMERIC ORGANIC BINDER A MONOMERIC ORGANIC PHOTOCONDUCTOR WHICH IS A COMPOUND HAVING THE FORMULA:
Claim 3
Dependent Claim
26 words
A photoconductive composition according to claim 1, wherein x is an aliphatic residue selected from the group consisting of alkylene, alkenylene, aliphatic dicarboxylic and cycoaliphatic residues.
Claim 4
Dependent Claim
32 words
A photoconductive composition according to claim 1, wherein X is an aromatic residue selecteD from the group consisting of anthryl, phenylene polyphenylene, naphthylene, dicarboxylic phenyl, pyridine, furane, pyrrol, thiophene and triazine residues.
Claim 5
Dependent Claim
13 words
A photoconductive composition according to claim 3 wherein Z is said amino group
Claim 6
Dependent Claim
13 words
A photoconductive composition according to claim 4 wherein Z is said amino group
Claim 7
Dependent Claim
37 words
A photoconductive composition according to claim 1 wherein said photoconductor is selected from the group consisting of 1,2-bis(4-N,N-diethyl-amino-phenylthio)-ethene, 1,2-bis(4-N,N-dibenzylamino-phenylthio) ethene, 1,2-bis(4-N-methyl-N-cyclopentylamino-phenylthio)ethene, 1,2-bis(4-N,N-diethylamino-phenylthio)-dichloroethene, 1,4-bis (4''-N,N-diethylamino-phenylthio)-butane, 1,2-bis(4-N-butyl-N-benzyl-amino-phenylthio)-ethene, 1,2-bis(4-N(H)cyclohexyl aminophenylthio)-ethene, 1,2-bis(4-morpholinophenylthio)-ethene, 1,4-bis(4''-N,N-diethylamino-phenylthio) phenylene, 2,6-bis(4''-N,N-diethylamino-phenylthio)-aniline, bis (4-N,N-diethyl-amino-phenylthio)-thion, bis(4-N,N-diethylamino-phenylthio)-thiolsuccinate, 1,2-bis(4-N,N-dimethylamino-2-methyl-phenylthio)-ethene and 1,2-bis(4-N,N-diethylamino-phenylthio)ethane.
Claim 8
Dependent Claim
14 words
An electrophotographic material comprising a layer of a photoconductive composition according to claim 1.
Claim 9
Dependent Claim
23 words
An electrophotographic material comprising a support having substantial electrical conductivity and carrying thereon a layer of a photoconductive composition according to claim 1.
Claim 10
Dependent Claim
19 words
An electrophotographic material comprising a paper support carrying thereon a layer of a photoconductive composition according to claim 1.
Claim 11
Dependent Claim
23 words
An electrophotographic material comprising a photoconductive composition according to claim 1 in the form of a fine powder useful as a photoconductive toner.
Claim 12
Dependent Claim
21 words
An electrophotographic material according to claim 10, said powder having an average particle size of the order of approximately 20 microns.
Claim 13
Dependent Claim
48 words
The process of producing an electrophotographic copy which comprises electrostatically charging a layer of a photoconductive composition according to claim 1, imagewise exposing the charged layer to light, and thereafter applying oppositely charged toner particles to said layer and fixing said particles to the unexposed image areas thereof.
Claim 14
Dependent Claim
84 words
The process of producing an electrophotographic copy which comprises applying to an electrically conductive surface a layer of a fine powder the particles of which contain a photoconductive composition according to claim 1 with a sensitizing dyestuff, electrostatically charging said layer, then imagewise exposing it to light, removing from said surface the powder in the exposed image areas of said layer, and transferring from said surface to and fixing on a receiving support the powder remaining in the unexposed image areas of said layer.
Claim 15
Dependent Claim
20 words
A photoconductive composition comprising in admixture with an electrically insulating polymeric organic binder a monomeric organic photoconductor having the formula:
Claim 16
Dependent Claim
20 words
A photoconductive composition comprising in admixture with an electrically insulating polymeric organic binder a monomeric organic photoconductor having the formula:
Claim 17
Dependent Claim
13 words
A photoconductive composition according to claim 1, wherein Z is an amino group
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |