US5034296A
Expired / Lapsed
US
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Photoconductive imaging members with fluorene polyester hole transporting layers
Assignee: Xerox Corp
•
Filing: 1989-04-03
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Granted: 1991-07-23
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Expires: 2009-04-03
Abstract
Abstract A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of fluorene charge transport polyesters of the following formulas: ##STR1## where A, B, Z are independently selected from a group of bifunctional groups; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y are mole fractional numbers wherein x is greater than 0, and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Inventors
- 👤 Beng S. Ong
- 👤 Giuseppa Baranyi
- 👤 Lupu Alexandru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:54
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/075; C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; G03G5/076; G03G5/0763; G03G5/0764
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
89 words
A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of fluorene charge transport components of the following formulas: ##STR7## where A, B, Z are independently selected from a group of bifunctional groups; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y are mole fraction numbers wherein x is greater than 0, and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 2
Dependent Claim
89 words
A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of fluorene charge transport components of the following formulas: ##STR7## where A, B, Z are independently selected from a group of bifunctional groups; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y are mole fraction numbers wherein x is greater than 0, and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 3
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein the bifunctional groups are alkylene, arylene, substituted alkylene, ether or polyether.
Claim 4
Dependent Claim
22 words
An imaging member in accordance with claim 1 wherein R is an alkyl group of from 1 to about 20 carbon atoms.
Claim 5
Dependent Claim
24 words
An imaging member in accordance with claim 1 wherein R, or Ar is an aryl group of from 6 to about 24 carbon atoms.
Claim 6
Dependent Claim
28 words
An imaging member in accordance with claim 1 wherein A, B and Z are alkylene or substituted alkylene groups containing from about 1 to about 20 carbon atoms.
Claim 7
Dependent Claim
28 words
An imaging member in accordance with claim 1 wherein A, B and Z are arylene groups containing from about 6 to about 30 carbon atoms, or derivatives thereof.
Claim 8
Dependent Claim
27 words
An imaging member in accordance with claim 1 wherein A, B and Z are ether or polyether groups containing from about 2 to about 20 carbon atoms.
Claim 9
Dependent Claim
17 words
An imaging member in accordance with claim 1 wherein the aryl substituents are phenyl, tolyl, or anisyl.
Claim 10
Dependent Claim
18 words
An imaging member in accordance with claim 1 wherein the aryl substituents are fluorophenyl, chlorophenyl, bromophenyl, or iodophenyl.
Claim 11
Dependent Claim
48 words
An imaging member in accordance with claim 1 wherein the hole transport polyester is 2,7-bis(phenyl-m-tolylamino)fluorene polyester III; 2,7-bis(phenyl-m-anisylamino)fluorene polyester IV; 2,7-bis(phenyl-p-tolylamino)fluorene polyester V; 2,7-bis(m-toly-p-tolylamino)fluorene polyester VI; bis(phenyl-p-chlorophenylamino)fluorene polyester VII; 2,7-bis(phenyl-m-tolylamino)fluorene polyester VIII; bis(diphenylamino)fluorene polyester IX; bis(phenyl-m-bromophenylamino)fluorene polyester X; 2,7-bis(phenyl-p-bromophenylamino)fluorene copolyester XI; bis(diphenylamino)fluorene copolyester XII; or 2,7-bis(phenyl-m-tolylamino)fluorene copolyester XIII.
Claim 12
Dependent Claim
35 words
An imaging member in accordance with claim 1 wherein the photogenerating layer is selected from the group consisting of metal free phthalocyanines, metal phthalocyanines, vanadyl phthalocyanines, selenium, selenium alloys, trigonal selenium, squaraine, and perylene pigments.
Claim 13
Dependent Claim
18 words
An imaging member in accordance with claim 11 wherein the photogenerating component is dispersed in a resinous binder.
Claim 14
Dependent Claim
28 words
An imaging member in accordance with claim 12 wherein the resinous binder is a polyester, a polycarbonate, an epoxy resin, a polyamide, a polysiloxane, or a vinyl polymer.
Claim 15
Dependent Claim
36 words
An imaging member in accordance with claim 1 wherein the hole transport layer is doped with a suitable fluorene charge transport small molecule in an amount of from 1 percent to about 50 percent by weight.
Claim 16
Dependent Claim
23 words
An imaging member in accordance with claim 14 wherein the fluorene charge transport small molecule is a bis(alkylarylamino)fluorene, or bis(diarylamino)fluorene hole transport compound.
Claim 17
Dependent Claim
12 words
An imaging member in accordance with claim 1 containing a supporting substrate.
Claim 18
Dependent Claim
14 words
An imaging member in accordance with claim 16 wherein the supporting substrate is aluminum.
Claim 19
Dependent Claim
43 words
An imaging method which comprises generating by exposure to a suitable source an electrostatic latent image on the imaging member of claim 1, followed by developing this image, subsequently transferring the image to a suitable substrate, and optionally, permanently affixing the image thereto.
Claim 20
Dependent Claim
73 words
A method of imaging in accordance with claim 14 wherein the hole transporting compound for the imaging member is selected from the polyesters of Formulas III, IV, V, VI, VII, VIII, IX, X, XI, XII, or XIII, wherein Ph is phenyl; x and y are mole fractional numbers wherein x is greater than 0, and the sum of x and y is equal to 1.0; and n represents the number of repeating segments.
Claim 21
Dependent Claim
39 words
A printing method which comprises generating a latent electrostatic image on the member of claim 1 with laser scanning, followed by developing this image, subsequently transferring the image to a suitable substrate, and optionally, permanently affixing the image thereto.
Claim 22
Dependent Claim
17 words
An imaging member in accordance with claim 1 containing a charge blocking layer, and 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) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |