US4337305A
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Sensitized organic electron donor compounds
Assignee: 3M Co
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Filing: 1981-02-23
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Granted: 1982-06-29
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Expires: 2001-02-23
Abstract
Abstract Organic electron donor compounds for use in electrophotographic constructions must ordinarily be sensitized to desired regions of the electromagnetic spectrum. Indolenine dyes having phenylsulfonyl or benzoyl substituents thereon have been found to be efficient sensitizers, particularly in the infrared portion of the electromagnetic spectrum, for such organic donor compounds.
Inventors
- 👤 Paolo Beretta
- 👤 Louis M. Leichter
- 👤 John J. Stofko, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:58
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
30 words
A photosensitive material comprising an organic electronically active donor compound sensitized with a sensitizing amount of an indolenine cyanine dye bearing a phenylsulfonyl or benzoyl substituent on the 5-position thereof.
Claim 2
Dependent Claim
30 words
A photosensitive material comprising an organic electronically active donor compound sensitized with a sensitizing amount of an indolenine cyanine dye bearing a phenylsulfonyl or benzoyl substituent on the 5-position thereof.
Claim 3
Dependent Claim
17 words
A layer of the photosensitive material of claim 1 wherein said donor compound is a polyvinyl carbazole.
Claim 4
Dependent Claim
27 words
A layer of the photosensitive material of claim 1 wherein said donor compound is present as at least 20% by weight in an electronically inactive polymeric binder.
Claim 5
Dependent Claim
42 words
A layer of the photosensitive material of claim 1 wherein said donor compound is a benzocarbazole derivative of the formula where X is ##STR12## wherein R and Y are independently selected from the group consisting of aliphatic, aromatic, and mixed aliphatic-aromatic groups.
Claim 6
Dependent Claim
162 words
The layers of claims 2, 3 or 4 in which said indolenine dye is represented by any of the formulae: ##STR13## wherein A is selected from ##STR14## n is a positive integer of 1 to 4, m and q each represents a positive integer of 1 to 2, p represents a positive integer of 1 to 3, r is 0 or 1, R 2 represents an acyclic hydrocarbon, R 1 is a 5-position phenylsulfonyl or benzoyl substituent, R 5 and R 6 are an aliphatic group, R 3 and R 4 represent the same or different alkyl groups of 1-6 carbon atoms, R 7 is selected from the group consisting of H, halogen, cyano, alkyl, alkoxy, phenoxy, aryl, amino, thiophenyl, and thioalkyl, Z represents the non-metallic atoms required to complete a heterocyclic nucleus of 5 to 6 ring atoms, Q represents the non-metallic atoms required to complete a heterocyclic nucleus of 5 to 6 ring atoms, and X represents an acid anion.
Claim 7
Dependent Claim
74 words
The layer of claims 2, 3, or 4 in which said indolenine dye is represented by the formula: ##STR15## wherein, n is 1, r is 1, R 2 is an aliphatic group of 1 to 13 carbon atoms, R 1 is phenylsulfonyl or benzoyl, R 3 and R 4 are selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl and hexyl, R 7 is halogen, and X - is an acid anion.
Claim 8
Dependent Claim
93 words
The layer of claims 2, 3, or 4 in which said indolenine dye is represented by the formula: ##STR16## wherein A is selected from ##STR17## r is 1, n is 1, R 2 is an aliphatic group of 1 to 13 carbon atoms, R 1 is a phenylsulfonyl or benzoyl group, R 3 and R 4 are selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, and hexyl, R 5 and R 6 are alkyl of 1 to 6 carbon atoms, R 7 is halogen, and X is an acid anion.
Claim 9
Dependent Claim
15 words
An electrophotographic element comprising, in sequence, a conductive substrate and the layer of claim 5.
References Cited (Backward Citations)
US4264694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |