EP0405420A1
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EP
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Electrophotographic photoreceptor
Assignee: Konica Minolta Inc
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Filing: 1990-06-26
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Granted: —
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Expires: 2010-06-26
Abstract
Abstract There is disclosed an electrophotographic photoreceptor which comprises a titanylphthalocyanine containing 0.2 % by weight or less of chlorine in a crystal form with the X-ray diffraction spectrum to Cu-Kα line having peaks at Bragg's angles 2ϑ of 9.5° ± 0.2°, 24.1° ± 0.2° and 27.2° ± 0.2°.
Inventors
- 👤 Akira Kinoshita
- 👤 Naohiro Hirose
- 👤 Kazumasa Watanabe
- 👤 Akihiko Itami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 04:24
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0025; C09B67/0026; C07; C07F; C07F7/00; C07F7/003; C09B47/00; C09B47/04; C09B47/045; C09B47/06; C09B47/073; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/047; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
45 words
An electrophotographic photoreceptor comprising a titanylphthalocyanine having a crystal form with the X-ray diffraction spectrum to Cu-Kα line having peaks at Bragg's angles 2ϑ of 9.5° ± 0.2°, 24.1° ± 0.2° and 27.2° ± 0.2° and containing 0.2 % by weight or less of chlorine.
Claim 2
Dependent Claim
45 words
An electrophotographic photoreceptor comprising a titanylphthalocyanine having a crystal form with the X-ray diffraction spectrum to Cu-Kα line having peaks at Bragg's angles 2ϑ of 9.5° ± 0.2°, 24.1° ± 0.2° and 27.2° ± 0.2° and containing 0.2 % by weight or less of chlorine.
Claim 3
Dependent Claim
105 words
The electrophotographic photoreceptor according to Claim 1, wherein said titanylphthalocyanine is prepared according to the method by use of a titanium compound represented by the formula (I) shown below: wherein X₁, X₂, X₃ and X₄ each represent, -OR₁, -SR₂, -OSO₂R₃ or where R₁ to R₅ each represent hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an acyl group, an aryloyl group, a heterocyclic group, and these groups may also have any desired substituent; X₁ to X₄ may be also bonded in any desired combination to form a ring; Y represents a ligand, and n represents 0, 1 or 2.
Claim 4
Dependent Claim
17 words
The electrophotographic photoreceptor according to Claim 1, wherein said titanylphthalocyanine is used as the carrier generating substance.
Claim 5
Dependent Claim
17 words
The electrophotographic photoreceptor according to Claim 2, wherein said titanylphthalocyanine is used as the carrier generating substance.
Claim 6
Dependent Claim
56 words
The electrophotographic photoreceptor according to Claim 2 or 4, wherein said titanylphthalocyanine is prepared by reacting 1,3-diiminoisoindoline represented by the formula: wherein R₆ to R₉ each represent a hydrogen atom or a substituent and the titanium compound represented by the formula (I) in the presence of a solvent at a temperature of 100 to 180 °C.
Claim 7
Dependent Claim
31 words
The electrophotographic photoreceptor according to Claim 2, 4 or 5, wherein said X₁ to X₄ each represent -OR₁ or wherein R₁, R₄ and R₅ have the same meanings as defined above.
Claim 8
Dependent Claim
35 words
The electrophotographic photoreceptor according to claim 2, 4 or 5, wherein said titanium compound is selected from the group consisting of: (1) (C₄H₉O)₄Ti (2) (i-C₃H₇O)₄Ti (3) (C₂H₅O)₄Ti (4) (i-C₄H₉O)₄Ti (5) (C₁₈H₃₇O)₄Ti (6) (C₃H₇O)₄Ti (7) (i-C₃H₇O)₂Ti(CH₃COCHCOCH₃)₂
Claim 9
Dependent Claim
29 words
The electrophotographic photoreceptor according to claim 1 or 3, wherein said titanylphthalocyanine is represented by the formula: wherein R₆ to R₂₁ each represent a hydrogen atom or a substituent.
Claim 10
Dependent Claim
69 words
The electrophotographic photoreceptor according to Claim 1 or 8, wherein the substituent for R₆ to R₂₁ is selected from the group consisting of an alkyl group, an alkoxy group, an alkoxythio group, an aryl group, an aryloxy group, an arylthio group, an acyl group, a carbamoyl group, a sulfamoyl group, an amino group, an alkylamino group, an arylamino group, a halogen atom, a nitro group and a cyano group.
Claim 11
Dependent Claim
22 words
The electrophotographic photoreceptor according to Claims 1 or 2 to 9, wherein chlorine content of said titanylphthalocyanine is 0.1 % or less.
References Cited (Backward Citations)
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