Patent US4551404A successfully refreshed from Google Patents.
US4551404A
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Disazo electrophotographic photosensitive member
Assignee: Canon Inc
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Filing: 1982-08-09
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Granted: 1985-11-05
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Expires: 2002-08-09
Abstract
Abstract An electrophotographic photosensitive member characterized by containing at least one azo pigment represented by the following formula (1), (2), or (3): ##STR1## In these formulae; ##STR2## wherein Z represents ##STR3## in which R 71 is hydrogen, or substituted or unsubstituted alkyl; n is 0 or 1; R 21 , R 22 , R 61 and R 62 represent hydrogen, alkyl, alkoxy, nitro, or hydroxyl R 31 and R 32 represent hydrogen or alkoxy; and R 41 , R 42 , R 43 , R 44 , R 51 , R 52 , R 53 and R 54 represent hydrogen, halogen, or organic monovalent residue. ##STR4## wherein X represents a residue necessary for completing an aromatic hydrocarbon ring or a heterocyclic ring, each ring being substituted or unsubstituted; R 11 represents hydrogen or alkyl; R 12 represents methyl, ethyl or C 3 -C 8 linear alkyl; and R 17 and R 18 represent alkyl, aralkyl or aryl, each substituted or unsubstituted. In formula (2), R 11 , R 12 and X are as defined above; R 13 and R 14 represent hydrogen or cyano; and R 15 and R 16 represent hydrogen, halogen, alkyl, alkoxy, nitro or hydroxyl.
Inventors
- 👤 Masaaki Hiro
- 👤 Yoshio Takasu
- 👤 Shozo Ishikawa
- 👤 Kazuharu Katagiri
- 👤 Hideyuki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:14
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0675; G03G5/0679; G03G5/0683; G03G5/0685; C; C09; C09B; C09B35/00; C09B35/02; C09B35/021; G03G5/0687; G03G5/0688
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
212 words
An electrophotographic photosensitive member characterized by a conductive layer or substrate a charge transport layer and a layer comprising a binder and at least one azo pigment represented by the following formula (1), (2) or (3): ##STR390## in these formulae; ##STR391## wherein, Z is ##STR392## in which R 71 is hydrogen, or substituted or unsubstituted alkyl; n is 0 or 1; R 21 , R 22 , R 61 and R 62 are hydrogen, alkyl, alkoxy, nitro, or hydroxyl; R 31 and R 32 are hydrogen or alkoxy; and R 41 , R 42 , R 43 , R 44 , R 51 , R 52 , R 53 and R 54 are hydrogen, halogen, or organic monovalent residue: ##STR393## wherein X represents a residue necessary for completing an aromatic hydrocarbon ring or a hetercyclic ring, each ring being substituted or unsubstituted; R 11 is hydrogen or alkyl; R 12 is methyl, ethyl, or C 3 -C 8 linear alkyl; and R 17 and R 18 are alkyl, aralkyl or aryl, each substituted or unsubstituted: in formula (2); R 11 , R 12 and X are as defined above; R 13 and R 14 are hydrogen or cyano; and R 15 and R 16 are hydrogen, halogen, alkyl, alkoxy, nitro, or hydroxyl.
Claim 2
Dependent Claim
212 words
An electrophotographic photosensitive member characterized by a conductive layer or substrate a charge transport layer and a layer comprising a binder and at least one azo pigment represented by the following formula (1), (2) or (3): ##STR390## in these formulae; ##STR391## wherein, Z is ##STR392## in which R 71 is hydrogen, or substituted or unsubstituted alkyl; n is 0 or 1; R 21 , R 22 , R 61 and R 62 are hydrogen, alkyl, alkoxy, nitro, or hydroxyl; R 31 and R 32 are hydrogen or alkoxy; and R 41 , R 42 , R 43 , R 44 , R 51 , R 52 , R 53 and R 54 are hydrogen, halogen, or organic monovalent residue: ##STR393## wherein X represents a residue necessary for completing an aromatic hydrocarbon ring or a hetercyclic ring, each ring being substituted or unsubstituted; R 11 is hydrogen or alkyl; R 12 is methyl, ethyl, or C 3 -C 8 linear alkyl; and R 17 and R 18 are alkyl, aralkyl or aryl, each substituted or unsubstituted: in formula (2); R 11 , R 12 and X are as defined above; R 13 and R 14 are hydrogen or cyano; and R 15 and R 16 are hydrogen, halogen, alkyl, alkoxy, nitro, or hydroxyl.
Claim 3
Dependent Claim
27 words
An electrophotographic photosensitive member of claim 1, wherein the formulae (1), (2) and (3) R 11 is hydrogen and R 12 is methyl, ethyl, n-propyl, or n-butyl.
Claim 4
Dependent Claim
23 words
An electrophotographic photosensitive member of claim 2, wherein the formulae (1), (2) and (3) R 11 is hydrogen and R 12 is methyl.
Claim 5
Dependent Claim
34 words
An electrophotographic photosensitive member of claim 1, wherein X of the formulae (1), (2) and (3) is a residue necessary for completing a benzene ring, naphthalene ring, benzofuran ring, indole ring, or carbazole ring.
Claim 6
Dependent Claim
25 words
An electrophotographic photosensitive member of claim 4, wherein X of the formulae (1), (2) and (3) is a residue necessary for completing a benzene ring.
Claim 7
Dependent Claim
34 words
An electrophotographic photosensitive member of claim 1, wherein said charge transport layer is laid on the layer comprising a binder and at least one azo pigment represented by the formula (1), (2) or (3).
Claim 8
Dependent Claim
33 words
An electrophotographic photosensitive member of claim 6, wherein the layer comprising a binder and at least one azo pigment represented by the formula (1), (2) or (3) is laid on a conductive layer.
Claim 9
Dependent Claim
37 words
An electrophotographic photosensitive member of claim 7, wherein a bond layer is held between the conductive layer and the layer comprising a binder and at least one azo pigment represented by the formula (1), (2) or (3).
Claim 10
Dependent Claim
32 words
An electrophotographic photosensitive member of claim 1, wherein the layer comprising a binder and at least one azo pigment represented by the formula (1), (2) or (3) has a thickness of 0.01-1μ.
Claim 11
Dependent Claim
19 words
An electrophotographic photosensitive member of claim 1, wherein said charge transport layer comprises a charge-transporting material and a binder.
Claim 12
Dependent Claim
15 words
An electrophotographic photosensitive member of claim 10, wherein said charge-transporting material is an electron-transporting material.
Claim 13
Dependent Claim
30 words
An electrophotographic photosensitive member of claim 11, wherein said electron-transporting material is a compound selected from the group consisting of chloranil, bromanil, tetracyanoethylene, tetracyanoquinodimethane, 2,4,7-trinitro-9-fluorenone, 3,4,5,7-tetranitro-9-fluorenone, 2,4,7-trinitro-9-dicyanomethylenefluorenone, 2,4,5,7-tetranitroxanthone, and 2,4,8-trinitrothioxanthone.
Claim 14
Dependent Claim
15 words
An electrophotographic photosensitive member of claim 10, wherein said charge-transporting material is a hole-transporting material.
Claim 15
Dependent Claim
38 words
An electrophotographic photosensitive member of claim 13, wherein said hold-transporting material is selected from the group consisting of pyrene, carbazoles, hydrazones, oxadiazoles, pyrazolines, oxazoles, thiazoles, triarylmethanes, polyarylalkanes, triphenylamine, poly(N-vinylcarbzole), polyvinylpyrene, polyvinylanthracene, polyvinylacridine, poly(9-vinylphenylanthrancene), pyrene-formaldehyde resin, and ethylcarbazole-formaldehyde resin.
Claim 16
Dependent Claim
17 words
An electrophotographic photosensitive member of claim 14, wherein said hole-transporting material is a hydrazone or a pyrazoline.
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| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
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