US4713307A
Expired / Lapsed
US
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Organic azo photoconductor imaging members
Assignee: Xerox Corp
•
Filing: 1986-04-11
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Granted: 1987-12-15
•
Expires: 2006-04-11
Abstract
Abstract A photoconductive imaging member containing a supporting substrate, certain azo pigments of 2,7-bis(1'-azo-2'-hydroxy-3'-naphthanilide)naphthalene and the derivatives thereof, and a hole transport layer. The aforementioned disposable imaging members are particularly useful in electrostatographic imaging and printing apparatuses in that they enable high quality images of excellent resolution, and wherein the electrical properties of the resulting imaging members are substantially stable over extended time periods.
Inventors
- 👤 Kock-Yee Law
- 👤 James M. Wescott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0675; G03G5/0679
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
34 words
An imaging member comprised of a supporting substrate, a photogenerating pigment containing an azo compound of the following formula ##STR3## wherein Ar is an aromatic or substituted aromatic substituent; and a hole transport layer.
Claim 2
Dependent Claim
34 words
An imaging member comprised of a supporting substrate, a photogenerating pigment containing an azo compound of the following formula ##STR3## wherein Ar is an aromatic or substituted aromatic substituent; and a hole transport layer.
Claim 3
Dependent Claim
21 words
An imaging member in accordance with claim 1 wherein the aryl substituent contains from about 6 to about 24 carbon atoms.
Claim 4
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the aryl substituent is phenyl.
Claim 5
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein the aryl substituent is substituted with alkyl, alkoxy, halogen, or nitro.
Claim 6
Dependent Claim
21 words
An imaging member in accordance with claim 4 wherein the alkyl substituent contains from about 1 to about 24 carbon atoms.
Claim 7
Dependent Claim
14 words
An imaging member in accordance with claim 4 wherein the alkyl substituent is methyl.
Claim 8
Dependent Claim
21 words
An imaging member in accordance with claim 4 wherein the alkoxy substituent contains from about 1 to about 24 carbon atoms.
Claim 9
Dependent Claim
14 words
An imaging member in accordance with claim 4 wherein the alkoxy substituent is methoxy.
Claim 10
Dependent Claim
17 words
An imaging member in accordance with claim 1 wherein the halogen is chlorine, bromine, fluorine or iodine.
Claim 11
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo pigment is 2,7-bis(1'-azo-2'-hydroxy-3'-naphthanilide)naphthalene.
Claim 12
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'naphtho-p-toluidide)naphthalene.
Claim 13
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'-naphtho-m-toluidide)naphthalene.
Claim 14
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'-naphtho-o-chloroanilide)naphthalene.
Claim 15
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'azo-2'-hydroxy-3'-naphtho-m-chloroanilide)naphthalene.
Claim 16
Dependent Claim
14 words
An imaging member is accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'-naphtho-m-fluoroanilide)naphthalene.
Claim 17
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'-naphtho-o-nitroanilide)naphthalene.
Claim 18
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'-naphtho-p-nitroanilide)naphthalene.
Claim 19
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the azo compound is 2,7-bis(1'-azo-2'-hydroxy-3'-naphtho-o-ethylanilide)naphthalene.
Claim 20
Dependent Claim
33 words
An imaging member in accordance with claim 1 wherein the hole transport layer comprises an aryl amine of the formula ##STR4## wherein X is selected from the group consisting of alkyl and halogen.
Claim 21
Dependent Claim
30 words
An imaging member in accordance with claim 19 wherein X is ortho (CH 3 ), meta (CH 3 ), para (CH 3 ), ortho (Cl), meta (Cl), or para (Cl).
Claim 22
Dependent Claim
16 words
An imaging member in accordance with claim 1 wherein the supporting substrate is comprised of aluminum.
Claim 23
Dependent Claim
19 words
An imaging member in accordance with claim 1 wherein the supporting substrate is comprised of a polymeric organic composition.
Claim 24
Dependent Claim
35 words
An imaging member comprised of (1) a supporting substrate; (2) a metal oxide hole blocking layer; (3) an azo generating layer comprised of the azo compounds of claim 1; and (4) a hole transport layer.
Claim 25
Dependent Claim
21 words
An imaging member in accordance with claim 23 wherein the aryl substituent contains from about 6 to about 24 carbon atoms.
Claim 26
Dependent Claim
14 words
An imaging member in accordance with claim 23 wherein the aryl substituent is phenyl.
Claim 27
Dependent Claim
20 words
An imaginhg member in accordance with claim 23 wherein the aryl substituent is substituted with alkyl, alkoxy, halogen, or nitro.
Claim 28
Dependent Claim
21 words
An imaging member in accordance with claim 26 wherein the alkyl substituent contains from about 1 to about 24 carbon atoms.
Claim 29
Dependent Claim
14 words
An imaging member in accordance with claim 26 wherein the alkyl substituent is methyl.
Claim 30
Dependent Claim
21 words
An imaging member in accordance with claim 26 wherein the alkoxy substituent contains from about 1 to about 24 carbon atoms.
Claim 31
Dependent Claim
14 words
An imaging member in accordance with claim 26 wherein the alkoxy substituent is methoxy.
Claim 32
Dependent Claim
18 words
An imaging member in accordance with the claim 23 wherein the halogen is chlorine, bromine, fluorine or iodine.
Claim 33
Dependent Claim
14 words
An imaging member in accordance with claim 23 wherein the azo pigment is 2,7-bis(1'-azo-2'-hydroxy-3'-naphthanilide)naphthalene.
Claim 34
Dependent Claim
33 words
A method of imaging which comprises generating an electrostatic latent image on the photoconductive imaging member of claim 1; subsequently developing this image; and thereafter transfering the developed image to a suitable substrate.
Claim 35
Dependent Claim
22 words
A method of imaging in accordance with claim 33 wherein the aryl substituent contains from about 6 to about 24 carbon atoms.
Claim 36
Dependent Claim
15 words
A method of imaging in accordance with claim 33 wherein the aryl substituent is phenyl.
Claim 37
Dependent Claim
21 words
A method of imaging in accordance with claim 33 wherein the aryl substituent is substituted with alkyl, alkoxy, halogen, or nitro.
Claim 38
Dependent Claim
22 words
A method of imaging in accordance with claim 36 wherein the alkyl substituent contains from about 1 to about 24 carbon atoms.
Claim 39
Dependent Claim
15 words
A method of imaging in accordance with claim 36 wherein the alkyl substituent is methyl.
Claim 40
Dependent Claim
22 words
A method of imaging in accordance with claim 36 wherein the alkoxy substituent contains from about 1 to about 24 carbon atoms.
Claim 41
Dependent Claim
15 words
A method of imaging in accordance with claim 36 wherein the alkoxy substituent is methoxy.
Claim 42
Dependent Claim
18 words
A method of imaging in accordance with claim 33 wherein the halogen is chlorine, bromine, fluorine or iodine.
Claim 43
Dependent Claim
15 words
A method of imaging in accordance with claim 33 wherein the azo pigment is 2,7-bis(1'-azo-2'-hydroxy-3'-naphthanilide)naphthalene.
Claim 44
Dependent Claim
16 words
An imaging member in accordance with claim 23 wherein the hole blocking layer is aluminum oxide.
Claim 45
Dependent Claim
16 words
An imaging member in accordance with claim 23 wherein the member further includes an adhesive layer.
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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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |