Title:
α型チタニルフタロシアニンの製造方法およびα型チタニルフタロシアニンを用いる電子写真感光体
Document Type and Number:
Japanese Patent JP4590439
Kind Code:
B2
Abstract:
The present invention relates to a method for producing an ±-form titanylphthalocyanine represented by the formula (1):
which has a peak at a Bragg angle (2¸ ± 0.2°) in X-ray diffraction spectrum with CuK ±-ray: 7.5°, 10.2°, 12.6°, 13.2°, 15.1°, 16.3°, 17.3°, 18.3°, 22.5°, 24.2°, 25.3° and 28.6°, wherein the method includes steps of:
(I) subjecting a crude titanylphthalocyanine having an ±-form polymorph to an acid pasting treatment, and then filtering and washing with water to give a water-containing wet cake, and then subjecting the wet cake to drying and crushing to give a low crystalline titanylphthalocyanine;
(II) adding a dispersing aid to the low crystalline titanylphthalocyanine and dispersing at room temperature, in DMF, to prepare a polymorph; and
(III) filtering, washing, and drying under a reduced pressure. The present invention consists in a provision of a method for conveniently producing the ±-form titanylphthalocyanine having a peak at a Bragg angle (2¸ ± 0.2°) in X-ray diffraction spectrum with CuK ±-ray: 7. 5°, 10. 2°, 12. 6°, 13.2°, 15.1°, 16.3°, 17.3°, 18.3°, 22.5°, 24.2°, 25.3° and 28.6°, wherein a crude titanylphthalocyanine having an ±-form polymorph is used as a starting material, as well as a provision of an electrophotographic photoreceptor comprising a charge generating material of the ±-form titanylphthalocyanine which has excellent photosensitive characteristics.
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Inventors:
High Kenji Ken
Application Number:
JP2007202034A
Publication Date:
December 01, 2010
Filing Date:
August 02, 2007
Export Citation:
Assignee:
Orient Chemical Industries Co., Ltd.
International Classes:
G03G5/06; C09B67/50
Domestic Patent References:
| JP61239248A | ||||
| JP8209023A | ||||
| JP11021466A | ||||
| JP8157740A | ||||
| JP2008208277A |
Attorney, Agent or Firm:
Mitsuo Tanaka
Takuji Yamada
Muneo Yamamoto
Yuko Goto
Takuji Yamada
Muneo Yamamoto
Yuko Goto