US4413045A
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US
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Multilayer electrophotographic photosensitive member comprises disazo charge generator layer, hydrazone transport layer
Assignee: Canon Inc
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Filing: 1982-05-24
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Granted: 1983-11-01
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Expires: 2002-05-24
Abstract
Abstract An electrophotographic photosensitive member is characterized by comprising a charge generation layer containing at least one disazo pigment represented by the following formula [I] and a charge transport layer containing at least one hydrazone compound represented by the following formula [II]: ##STR1## wherein A is a coupler residue, B represents hydrogen, halogen, alkyl, or alkoxy, and n is an integer of 1 to 4; ##STR2## wherein R 1 represents N,N-dialkyl amino, or N,N-diarylamino, or N-alkyl-N-arylamino, or alkoxy or aryloxy, each being substituted or unsubstituted; R 2 and R 3 each represent alkyl, aralkyl, or aryl, each being substituted or unsubstituted, or R 2 and R 3 , together with the nitrogen atom which links them, represent nitrogen-containing heterocyclic ring; R 4 represents hydrogen, or alkyl, aralkyl, or aryl, each being substituted or unsubstituted; R 5 represents hydrogen, alkyl, or alkoxy; and l is 0 or 1.
Inventors
- 👤 Shozo Ishikawa
- 👤 Kazuharu Katagiri
- 👤 Katsunori Watanabe
- 👤 Kiyoshi Sakai
- 👤 Makoto Kitahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:33
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/02; C09B35/039; C09B35/34; C09B26/00; C09B26/02; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0616; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/0675; G03G5/0679; G03G5/0681
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
An electrophotographic photosensitive member characterized by comprising a charge generation layer containing at least one disazo pigment represented by the following formula [I] and a charge transport layer containing at least one hydrazone compound represented by the following formula [II]: ##STR15## wherein A is a coupler residue, B represents hydrogen, halogen, alkyl, or alkoxy, and n is an integer of 1 to 4; ##STR16## wherein R 1 represents N,N-dialkylamino, or N,N-diarylamino, or N-alkyl-N-arylamino, or alkoxy or aryloxy, each being substituted or unsubstituted; R 2 and R 3 each represent alkyl, aralkyl, or aryl, each being substituted or unsubstituted, or R 2 and R 3 , together with the nitrogen atom which links them, represent nitrogen-containing heterocyclic ring; R 4 represents hydrogen, or alkyl, aralkyl, or aryl, each being substituted or unsubstituted; R 5 represents hydrogen, alkyl, or alkoxy; and l is 0 or 1.
Claim 2
Dependent Claim
144 words
An electrophotographic photosensitive member characterized by comprising a charge generation layer containing at least one disazo pigment represented by the following formula [I] and a charge transport layer containing at least one hydrazone compound represented by the following formula [II]: ##STR15## wherein A is a coupler residue, B represents hydrogen, halogen, alkyl, or alkoxy, and n is an integer of 1 to 4; ##STR16## wherein R 1 represents N,N-dialkylamino, or N,N-diarylamino, or N-alkyl-N-arylamino, or alkoxy or aryloxy, each being substituted or unsubstituted; R 2 and R 3 each represent alkyl, aralkyl, or aryl, each being substituted or unsubstituted, or R 2 and R 3 , together with the nitrogen atom which links them, represent nitrogen-containing heterocyclic ring; R 4 represents hydrogen, or alkyl, aralkyl, or aryl, each being substituted or unsubstituted; R 5 represents hydrogen, alkyl, or alkoxy; and l is 0 or 1.
Claim 3
Dependent Claim
109 words
An electrophotographic photosensitive member of claim 1, wherein A in the formula [I] is a coupler residue represented by the following formula (a), (b), (c), or (d): ##STR17## wherein X represents a group necessary to complete an aromatic hydrocarbon ring or a heterocyclic ring, each being substituted or unsubstituted; and Y represents ##STR18## wherein R 6 represents hydrogen, or alkyl or aryl, each being substituted or unsubstituted, and R 7 represents alkyl or aryl, each being substituted or unsubstituted; ##STR19## wherein Z 1 represents alkyl, aralkyl, or aryl, each being substituted or unsubstituted; ##STR20## wherein Z 2 represents alkyl, aralkyl, or aryl, each being substituted or unsubstituted; and ##STR21##
Claim 4
Dependent Claim
34 words
An electrophotographic photosensitive member of claim 2, wherein A in the formula [I] is a coupler residue represented by the formula ##STR22## wherein R 7 represents alkyl or aryl, each being substituted or unsubstituted.
Claim 5
Dependent Claim
25 words
An electrophotographic photosensitive member of claim 1, wherein R 1 in the formula [II] is N,N-dialkylamino, or N,N-diarylamino, or N-alkyl-N-arylamino, each being substituted or unsubstituted.
Claim 6
Dependent Claim
22 words
An electrophotographic photosensitive member of claim 4, wherein R 1 in the formula [II] is dimethylamino, diethylamino, dipropylamino, dibutylamino, dibenzylamino, or diphenylamino.
Claim 7
Dependent Claim
23 words
An electrophotographic photosensitive member of claim 1, wherein R 2 and R 3 in the formula [II] are each substituted or unsubstituted aryl.
Claim 8
Dependent Claim
25 words
An electrophotographic photosensitive member of claim 5, wherein at least one of R 2 and R 3 in the formula [II] is α-naphthyl or β-naphtyl.
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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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |