US4749637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic plate with silicon naphthalocyanine
Assignee: Resonac Corp
•
Filing: 1987-04-23
•
Granted: 1988-06-07
•
Expires: 2007-04-23
Abstract
Abstract An electrophotographic plate comprising an electroconductive support and a photoconductive layer containing a naphthalocyanine compound having siloxy groups bonded to the central metal silicon as a charge generating substance has high sensitivity to the longer wavelength light of about 800 nm without conducting a special treatment.
Inventors
- 👤 Shigeru Hayashida
- 👤 Seiji Tai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:55
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/045; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C07F7/06; C07F7/08; C07F7/0834; C07F7/0838; C09B47/06; C09B47/073; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
An electrophotographic plate comprising an electroconductive support and a photoconductive layer containing an organic photoconductive substance as a charge generating material formed on the substrate, said organic photoconductive substance being a naphthalocyanine compound represented by the formula: ##STR6## where L is a group of the formula: R 1 R 2 R 3 Si--O--; R 1 , R 2 and R 3 are independently hydrogen, an alkyl group or an alkoxy group.
Claim 2
Dependent Claim
71 words
An electrophotographic plate comprising an electroconductive support and a photoconductive layer containing an organic photoconductive substance as a charge generating material formed on the substrate, said organic photoconductive substance being a naphthalocyanine compound represented by the formula: ##STR6## where L is a group of the formula: R 1 R 2 R 3 Si--O--; R 1 , R 2 and R 3 are independently hydrogen, an alkyl group or an alkoxy group.
Claim 3
Dependent Claim
33 words
An electrophotographic plate according to claim 1, wherein the photoconductive layer is a complex type comprising a charge generation layer containing the naphthalocyanine compound of the formula (I) and a charge transport layer.
Claim 4
Dependent Claim
27 words
An electrophotographic plate according to claim 1, wherein the napthalocyanine compound is bis(trihexylsiloxy)silicon napthalocyanine, bis(dimethylpropylsiloxy)silicon naphthalocyanine, bis(triethylsiloxy)silicon naphthalocyanine, bis(tripropylsiloxy)silicon naphthalocyanine, bis(tributylsiloxy)silicon naphthalocyanine, bis(dimethoxymethylsiloxy)silicon naphthalocyanine, or bis(triethoxysiloxy)silicon naphthalocyanine.
Claim 5
Dependent Claim
21 words
An electrophotographic plate according to claim 1, wherein the photoconductive layer comprises a charge generating substance and a charge transport substance.
Claim 6
Dependent Claim
25 words
An electrophotographic plate according to claim 1, wherein the photoconductive layer is a film containing the naphthalocyanine compound of the formula (I) and a binder.
Claim 7
Dependent Claim
27 words
An electrophotographic plate according to claim 2, wherein the naphthalocyanine compound in bis(trihexylsiloxy)silicon naphthalocyanine, bis(dimethylpropylsiloxy)silicon napththalocyanine, bis(triethylsiloxy)silicon naphthalocyanine, bis(tripropylsiloxy)silicon naphthalocyanine, bis(tributylsiloxy)silicon naphthalocyanine, bis(dimethoxymethylsiloxy)silicon naphthalocyanine, or bis(triethyxysiloxy)silicon naphthalocyanine.
References Cited (Backward Citations)
US3816118A
Cited
US3926629A
Cited
US4214907A
Cited
EP0050464A2
Cited
JPS57148745A
Cited
EP0129413A1
Cited
US4557989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |