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EP0180930A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Crystalline oxytitanium phthalocyanine and photoreceptor for use in electrophotography

Assignee: Mitsubishi Chemical Corp
•
Filing: 1985-10-31
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Granted: —
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Expires: 2005-10-31
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Abstract

Abstract Disclosed is a crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (2 theta +/- 0.2:) of 9.3 DEG , 10.6 DEG , 13.2 DEG , 15.1 DEG , 15.7 DEG , 16.1 DEG , 20.8 DEG , 23.3 DEG , 26.3 DEG and 27.1 DEG in the X-ray diffraction spectrum, the intensity of the diffraction peak at Bragg angle of 26.3 DEG being most strong and the intensity of the diffraction peaks at Bragg angles between 4 DEG - 8 DEG being less than 5% of the intensity of the diffraction peak at Bragg angle of 26.3 DEG . Further, disclosed is a photoreceptor for use in electrophotography, comprising at least a charge generation layer in which the oxytitanium phthalocyanine above is dispersed in a binder polymer and a charge transport layer laminated thereon.

Inventors

  • 👤 Tetsumi Suzuki
  • 👤 Tetsuo Murayama
  • 👤 Hitoshi B-411 Sakuradai Apartment Ono
  • 👤 Shigenori Otsuka
  • 👤 Mamoru 301 Shimura Building Nozomi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 16:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696; C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0025; C09B67/0026

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 78 words
(1) A crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (28 + 0.2°) of 9.3°, 10.6°, 13.2°, 15.1°, 15.7°, 16.1°, 20.8°, 23.3°, 26.3° and 27.1° in the X-ray diffraction spectrum, the intensity of the diffraction peak at Bragg angle of 26.3° being most strong and the intensity of the diffraction peaks at Bragg angles between 4° - 8° being less than 5 % of the intensity of the diffraction peak at Bragg angle of 26.3°.
Claim 2
Dependent Claim 109 words
(2) A photoreceptor for use in electrophotography, comprising at least a charge generation layer in which an oxytitanium phthalocyanine is dispersed in a binder polymer and a charge transport layer laminated thereon, wherein the oxytitanium phthalocyanine shows intense diffraction peaks at Bragg angles (28 + 0.2°) of 9.3°, 10.6°, 13.2°, 15.1°, 15.7°, 16.1°, 20.8°, 23.3°, 26.3° and 27.1° in the X-ray diffraction spectrum and the intensity of the diffraction peak at Bragg angle of 26.3° is most strong and the intensity of the diffraction peaks at Bragg angles between 4° - 8° is less than 5 % of the intensity of the diffraction peak at Bragg angle of 26.3°.

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