US5665501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive element with polycarbonate binder
Assignee: Canon Production Printing Netherlands BV
•
Filing: 1996-11-01
•
Granted: 1997-09-09
•
Expires: 2016-11-01
Abstract
Abstract A photoconductive element having a photoconductive layer containing a polycarbonate binder based on di-(monohydroxyaryl) alkane, wherein the polycarbonate contains a branching agent selected from the group consisting of 1,2,4-benzene tricarboxylic acid, 1,3,5-benzene tricarboxylic acid, 1,2,4-benzene tricarboxylic acid chloride and 1,3,5-benzene tricarboxylic acid chloride.
Inventors
- 👤 Petrus J. M. Derks
- 👤 Hendrik J. A. Ogrinc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0589; G03G5/0557; G03G5/0564; G03G5/0592; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/0616
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
43 words
A photoconductive element having a photoconductive layer containing a polycarbonate binder based on di-(monohydroxyaryl) alkane, wherein the polycarbonate contains a branching agent selected from the group consisting of 1,2,4-benzene tricarboxylic acid, 1,3,5-benzene tricarboxylic acid, 1,2,4-benzene tricarboxylic acid chloride and 1,3,5-benzene tricarboxylic acid chloride.
Claim 2
Dependent Claim
43 words
A photoconductive element having a photoconductive layer containing a polycarbonate binder based on di-(monohydroxyaryl) alkane, wherein the polycarbonate contains a branching agent selected from the group consisting of 1,2,4-benzene tricarboxylic acid, 1,3,5-benzene tricarboxylic acid, 1,2,4-benzene tricarboxylic acid chloride and 1,3,5-benzene tricarboxylic acid chloride.
Claim 3
Dependent Claim
23 words
A photoconductive element according to claim 1, wherein the amount of branching agent in the binder is from 0.1 mol-% to 1 mol-%.
Claim 4
Dependent Claim
23 words
A photoconductive element according to claim 2, wherein the amount of branching agent in the binder is from 0.1 mol-% to 0.5 mol-%.
Claim 5
Dependent Claim
21 words
A photoconductive element according to any one of claims 1 to 3, wherein a plasticizer is included in the binder solution.
Claim 6
Dependent Claim
13 words
A photoconductive element according to claim 4, wherein the plasticizer is dioctyl phthalate.
Claim 7
Dependent Claim
54 words
A photoconductive element having a photoconductive layer with a generating layer and a transport layer, the latter containing a polycarbonate binder based on di-(monohydroxyaryl) alkane, wherein the polycarbonate contains a branching agent selected from the group consisting of 1,2,4-benzene tricarboxylic acid, 1,3,5-benzene tricarboxylic acid chloride, 1,2,4-benzene tricarboxylic acid chloride and 1,3,5-benzene tricarboxylic acid chloride.
Claim 8
Dependent Claim
54 words
A photoconductive element having a photoconductive layer with a generating layer and a transport layer, the latter containing a polycarbonate binder based on di-(monohydroxyaryl) alkane, wherein the polycarbonate contains a branching agent selected from the group consisting of 1,2,4-benzene tricarboxylic acid, 1,3,5-benzene tricarboxylic acid chloride, 1,2,4-benzene tricarboxylic acid chloride and 1,3,5-benzene tricarboxylic acid chloride.
Claim 9
Dependent Claim
23 words
A photoconductive element according to claim 6, wherein the amount of branching agent in the binder is from 0.1 mol-% to 1 mol-%.
Claim 10
Dependent Claim
23 words
A photoconductive element according to claim 7, wherein the amount of branching agent in the binder is from 0.1 mol-% to 0.5 mol-%.
Claim 11
Dependent Claim
21 words
A photoconductive element according to any one of claims 6 to 8, wherein a plasticizer is included in the binder solution.
Claim 12
Dependent Claim
13 words
A photoconductive element according to claim 9, wherein the plasticizer is dioctyl phthalate.
Claim 13
Dependent Claim
41 words
A photoconductive element according to claim 6, wherein an azine transport substance having the following molecular formula is mixed in the transport layer: ##STR4## where R 1 -R 6 comprise a hydrogen atom or an alkyl group with 1-4 carbon atoms.
Claim 14
Dependent Claim
20 words
A photoconductive element according to claim 6, wherein para-tri-tolyl amine is included as a transport substance in the transport layer.
Claim 15
Dependent Claim
24 words
A photoconductive element according to claim 6, wherein a mixture of hydrazones having the following molecular formulae is included in the transport layer: ##STR5##
References Cited (Backward Citations)
GB834502A
Cited
US2999750A
Cited
US4543310A
Cited
US4968573A
Cited
US4956256A
Cited
JPS6365444A
Cited
JPS63136051A
Cited
US5130215A
Cited
US5576162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |