发明授权
- 专利标题: .alpha.-type titanyl phthalocyanine composition, method for production thereof, and electrophotographic sensitive material using same
- 专利标题(中): α型钛酞菁组合物,其制备方法和使用其的电子照相感光材料
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申请号: US261896申请日: 1988-10-25
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公开(公告)号: US4971877A公开(公告)日: 1990-11-20
- 发明人: Eiichi Miyamoto , Nariaki Mutou , Tooru Nakazawa , Tatsuo Maeda
- 申请人: Eiichi Miyamoto , Nariaki Mutou , Tooru Nakazawa , Tatsuo Maeda
- 申请人地址: JPX Osaka
- 专利权人: Mita Industrial Co., Ltd.
- 当前专利权人: Mita Industrial Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX62-271319 19871026; JPX62-301707 19871130
- 主分类号: C09B47/04
- IPC分类号: C09B47/04 ; C09B67/16 ; C09B67/22 ; C09B67/50 ; C09B67/54 ; G03G5/06
摘要:
The first aspect of this invention resides in providing an .alpha.-type titanyl phthalocyanine composition comprising an .alpha.-type titanyl phthalocyanine and metal-free phthalocyanine. This .alpha.-type titanyl phthalocyanine composition is stable, wide in range of absorption wavelengths, and high in spectral sensitivity because it contains an .alpha.-type titanyl phthalocyanine in combination with metal-free phthalocyanine.The second aspect of this invention resides in providing a method for the production of an .alpha.-type titanyl phthalocyanine composition comprising an .alpha.-type titanyl phthalocyanine and a metal-free phthalocyanine, which method comprises pigmenting a concentrated sulfuric acid solution containing at least titanyl phthalocyanine by the acid paste process consisting in pouring said concentrated sulfuric acid solution into water. By this method, an .alpha.-type titanyl phthalocyanine composition stable to withstand the impact of aging can be easily produced.The third aspect of this invention resides in providing an electrophotographic sensitive material having superposed on an electroconductive substrate a sensitive layer compring an .alpha.-type titanyl phthalocyanine and a metal-free phthalocyanine. This electrophotographic sensitive material excels in charging property and dark attenuation property and exhibits high sensitivity and sparing residual potential.The fourth aspect of this invention resides in providing an electrophotographic sensitive material having superposed on an electroconductive substrate a sensitive layer comprising an .alpha.-type titanyl phthalocyanine composition and an electric charge transferring material exhibiting oxidation potential in the range of 0.45 to 0.65 eV. This electrophotographic sensitive material enjoys high sensitivity and shows sparing residual potential.
公开/授权文献
- US5549189A Machine for automatically positioning and aligning containers 公开/授权日:1996-08-27