发明名称 |
PROCESS FOR PRODUCING TONERS FOR USE IN ELECTROPHOTOGRAPHY |
摘要 |
27571-19 Disclosed is a process for producing toners for use in electrophotography which comprises: stirring a mixture of a radical polymerizable liquid monomer and carbon black in the presence of a peroxide polymerization initiator, thereby to disperse the carbon black uniformly and minutely in the monomer; adding an azobisnitrile polymerization initiator to the resultant monomer composition; suspension polymerizing the monomer in an aqueous medium: and recovering and drying the resultant spherical polymer particles. In a preferred manner, the suspension polymerization is carried out in an aqueous medium which contains polyvinyl alcohol as a suspending agent, and after the polymerization, the polyvinyl alcohol remaining on the polymer particles is saponified or nitrated to produce a toner with a higher quality. |
申请公布号 |
CA1313968(C) |
申请公布日期 |
1993.03.02 |
申请号 |
CA19880570558 |
申请日期 |
1988.06.28 |
申请人 |
BANDO CHEMICAL INDUSTRIES, LTD. |
发明人 |
YAMASHIRO, JIRO;MIKI, TAKASHI |
分类号 |
G03G9/08;G03G9/087 |
主分类号 |
G03G9/08 |
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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