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US4664997A
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Crystalline oxytitanium phthalocyanine and photoreceptor for use in electrophotography
Assignee: Mitsubishi Chemical Corp
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Filing: 1985-10-01
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Granted: 1987-05-12
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Expires: 2005-10-01
Abstract
Abstract Disclosed is a crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (2 theta +/-0.2 DEG ) 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 carrier generation layer in which the oxytitanium phthalocyanine above is dispersed in a binder polymer and a charge carrier transport layer laminated thereon.
Inventors
- 👤 Tetsumi Suzuki
- 👤 Tetsuo Murayama
- 👤 Hitoshi Ono
- 👤 Shigenori Otsuka
- 👤 Mamoru Nozomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:47
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0025; C09B67/0026; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (2θ±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
72 words
A crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (2θ±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 3
Dependent Claim
104 words
A photoreceptor for use in electrophotography, comprising at least a charge carrier generation layer in which an oxytitanium phthalocyanine is dispersed in a binder polymer and a charge carrier transport layer laminated thereon, wherein the oxytitanium phthalocyanine shows intense diffraction peaks at Bragg angles (2θ±0.2°) of 9.3°, 10.6°, 13.2°, 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°.
Claim 4
Dependent Claim
104 words
A photoreceptor for use in electrophotography, comprising at least a charge carrier generation layer in which an oxytitanium phthalocyanine is dispersed in a binder polymer and a charge carrier transport layer laminated thereon, wherein the oxytitanium phthalocyanine shows intense diffraction peaks at Bragg angles (2θ±0.2°) of 9.3°, 10.6°, 13.2°, 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°.
References Cited (Backward Citations)
US27117A
Cited
US3155503A
Cited
US3816118A
Cited
US3357989A
Cited
USRE27117E
Cited
JPS49544A
Cited
JPS57148745A
Cited
US4426434A
Cited
US4471039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |