发明名称 |
Oxo-titanylphthalocyanine crystal, method for producing the same, and electrophotographic photoreceptor |
摘要 |
The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and charge retention rate of an electrophotographic photoreceptor when it is used as a charge generating agent, a method for producing the oxo-titanylphthalocyanine crystal, and an electrophotographic photoreceptor. The oxo-titanylphthalocyanine crystal has predetermined optical characteristics and thermal properties and is produced by a production method including the following steps (a) to (d): (a) a step of dissolving a crude oxo-titanylphthalocyanine crystal in an acid to obtain an oxo-titanylphthalocyanine solution; (b) a step of adding the oxo-titanylphthalocyanine solution dropwise in a poor solvent to obtain a wet cake; (c) a step of washing the wet cake with an alcohol having 1 to 4 carbon atoms; and (d) a step of stirring the washed wet cake under heating in a nonaqueous solvent to obtain an oxo-titanylphthalocyanine crystal. |
申请公布号 |
US8242261(B2) |
申请公布日期 |
2012.08.14 |
申请号 |
US20100924710 |
申请日期 |
2010.10.01 |
申请人 |
KUBOSHIMA DAISUKE;AZUMA JUN;INAGAKI YOSHIO;OTSUBO JUNICHIRO;MARUO KEIJI;KYOCERA MITA CORPORATION |
发明人 |
KUBOSHIMA DAISUKE;AZUMA JUN;INAGAKI YOSHIO;OTSUBO JUNICHIRO;MARUO KEIJI |
分类号 |
C09B67/04 |
主分类号 |
C09B67/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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