US4361637A
Expired / Lapsed
US
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Electron bis-benzocarbazole donor compounds and photoconductive charge transport materials
Assignee: 3M Co
•
Filing: 1981-02-23
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Granted: 1982-11-30
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Expires: 2001-02-23
Abstract
Abstract Organic electron donor compounds for use in electrophotographic constructions tend to suffer from problems of molecular weight non-uniformity and oxidation. Bis-benzocarbazole derivatives have been found to resist the oxidation and oligomerization which are a source of these problems.
Inventors
- 👤 John J. Stofko, Jr.
- 👤 Kenneth G. Kneipp
- 👤 Terry J. Sonnonstine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:33
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/80; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
47 words
An electronically active photoconductive insulating layer comprising a polymeric binder and an electrically active donor compound of the formula ##STR8## where X is a group selected from ##STR9## wherein R and Y are independently selected from the group consisting of aliphatic, aromatic, heterocyclic, and mixed aliphatic-aromatic groups.
Claim 2
Dependent Claim
47 words
An electronically active photoconductive insulating layer comprising a polymeric binder and an electrically active donor compound of the formula ##STR8## where X is a group selected from ##STR9## wherein R and Y are independently selected from the group consisting of aliphatic, aromatic, heterocyclic, and mixed aliphatic-aromatic groups.
Claim 3
Dependent Claim
11 words
The layer of claim 1 wherein Y is an aromatic group.
Claim 4
Dependent Claim
26 words
The layer of claims 1 or 2 wherein R is an alkyl group of 2 to 20 carbon atoms, phenyl group, naphthyl group or benzyl group.
Claim 5
Dependent Claim
19 words
The layer of claim 1 wherein Y is phenyl and R is n-alkyl of 2 to 20 carbon atoms.
Claim 6
Dependent Claim
13 words
The layer of claim 1 wherein X is a moiety selected from ##STR10##
Claim 7
Dependent Claim
24 words
A photoconductive element comprising, in sequence, a conductive layer, a charge generating layer, and the photoconductive insulating layer of claims 1, 2, or 4.
Claim 8
Dependent Claim
15 words
A photoconductive element comprising a conductive layer and the layer of claims 1 or 2.
Claim 9
Dependent Claim
38 words
A photoconductive element comprising a conductive substrate and the layer of claim 2 wherein R is selected from the class consisting of an alkyl group of 2 to 20 carbon atoms, phenyl group, naphthyl group, or benzyl group.
Claim 10
Dependent Claim
71 words
An imaging process comprising providing an electrical charge on an element comprising in sequence a conductive layer, a photoconductive charge generating layer and the photoconductive insulating layer of claim 1, irradiating said charged element with a pattern of radiation to selectively cause areas of said charge to be conducted to said conductive layer, and selectively attracting material to either the charged or uncharged areas of said element to form an image.
Claim 11
Dependent Claim
16 words
The process of claim 9 wherein said image is transferred to another surface by contact therewith.
Claim 12
Dependent Claim
38 words
The layer of claims 1, 2 or 4 wherein X contains substituents on non-coupling positions other than the nitrogen atom, and such substituents are selected from the group consisting of alkyl, alkoxy, nitro, halogen, phenyl, naphthyl and benzyl.
Claim 13
Dependent Claim
35 words
The element of claim 6 wherein X contains substituents on non-coupling positions other than the nitrogen atom, and such substituents are selected from the group consisting of alkyl, alkoxy, nitro, halogen, phenyl, naphthyl and benzyl.
Claim 14
Dependent Claim
35 words
The element of claim 7 wherein X contains substituents on non-coupling positions other than the nitrogen atom, and such substituents are selected from the group consisting of alkyl, alkoxy, nitro, halogen, phenyl, naphthyl and benzyl.
Claim 15
Dependent Claim
37 words
The process of claims 9 or 10 wherein X contains substituents on non-coupling positions other than the nitrogen atom, and such substituents are selected from the group consisting of alkyl, alkoxy, nitro, halogen, phenyl, naphthyl and benzyl.
References Cited (Backward Citations)
US4025341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |