US4321318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo photoconductor and process of manufacture of electrophotographic element
Assignee: IBM Information Products Corp
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Filing: 1980-12-23
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Granted: 1982-03-23
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Expires: 2000-12-23
Abstract
Abstract A layered xerographic photoconductor having a charge generating layer which includes a photosensitive dye molecule which is soluble in chlorinated organic solvents, specifically methylene chloride, the dye molecule being ##STR1## and a P-type charge transport layer.
Inventors
- 👤 Howard W. Anderson
- 👤 Ronald H. Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:35
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/02; C09B35/039; C09B35/08; C09B35/10; C09B35/14; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0675; G03G5/0679
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
32 words
A layered xerographic photoconductor having a charge generating layer containing a photosensitive dye molecule which is soluble in a chlorinated organic solvent, the dye molecule being ##STR6## and a P-type transport layer.
Claim 2
Dependent Claim
32 words
A layered xerographic photoconductor having a charge generating layer containing a photosensitive dye molecule which is soluble in a chlorinated organic solvent, the dye molecule being ##STR6## and a P-type transport layer.
Claim 3
Dependent Claim
11 words
The photoconductor of claim 1 wherein said solvent is methylene chloride.
Claim 4
Dependent Claim
22 words
The photoconductor of claim 1 or 2 where the dye molecule has n = 18, X = O and Y = Cl.
Claim 5
Dependent Claim
32 words
The photoconductor of claim 1 or 2 where the dye molecule has n = 18, X = O and Y = Cl, and where the transport layer contains p-diethyl amino benzaldehyde-(diphenyl hydrazone).
Claim 6
Dependent Claim
50 words
The process of manufacturing an electrophotographic imaging element including an electrically conductive substrate, comprising the steps of: essentially completely dissolving the dye molecule ##STR7## in a chlorinated solvent; then coating the resulting solution onto a polyester coated conductive substrate; and then coating the dye layer with a P-type transport layer.
Claim 7
Dependent Claim
50 words
The process of manufacturing an electrophotographic imaging element including an electrically conductive substrate, comprising the steps of: essentially completely dissolving the dye molecule ##STR7## in a chlorinated solvent; then coating the resulting solution onto a polyester coated conductive substrate; and then coating the dye layer with a P-type transport layer.
Claim 8
Dependent Claim
11 words
The process of claim 5 wherein said solvent is methylene chloride.
Claim 9
Dependent Claim
22 words
The process of claim 5 or 6 wherein the dye molecule has n = 18, X = O, and Y = Cl.
Claim 10
Dependent Claim
30 words
The process of claim 5 or 6 wherein the dye molecule has n = 18, X = O, and Y = Cl, and where the P-type transport layer contains p-diethylaminobenzaldehyde-(diphenylhydrazone).
References Cited (Backward Citations)
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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) | 1985-03-22 | 1985-09-21 | 1986-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-22 | 1989-09-21 | 1990-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-22 | 1993-09-21 | 1994-03-23 | $7700.00 | Window Closed / Lapsed |