发明授权
US4810607A Photosensitive member for electrophotography containing trisazo pigment
having pyridylene group in its central skeleton
失效
用于电子照相的感光构件,其含有在其中心骨架中具有亚吡啶基的三偶氮颜料
- 专利标题: Photosensitive member for electrophotography containing trisazo pigment having pyridylene group in its central skeleton
- 专利标题(中): 用于电子照相的感光构件,其含有在其中心骨架中具有亚吡啶基的三偶氮颜料
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申请号: US73221申请日: 1987-07-14
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公开(公告)号: US4810607A公开(公告)日: 1989-03-07
- 发明人: Masakazu Matsumoto , Takao Takiguchi , Hideyuki Takai
- 申请人: Masakazu Matsumoto , Takao Takiguchi , Hideyuki Takai
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX61-172580 19860722
- 主分类号: C09B35/378
- IPC分类号: C09B35/378 ; G03G5/06
摘要:
A photosensitive member for electrophotography comprises a photosensitive layer containing a trisazo pigment represented by the formula: ##STR1## wherein Ar.sub.1 is a pyridylene group capable of having a substituent; Ar.sub.2 and Ar.sub.3 are respectively a pyridylene group or an arylene group each capable of having a substituent; and A is a coupler residue having a phenolic OH group. Because the trisazo pigment has a characteristic central skeleton including the central nitrogen atom and an adjacent pyridylene group, the photosensitive member has a sensitivity region expanded to the near-infrared region and shows a stable charging characteristic during a continuous electrophotographic operation.
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