发明名称 |
Verfahren zur Fluessigentwicklung eines elektrostatischen Bildes |
摘要 |
An electrophotographic liquid-developing method comprising controlling the polarity of the toner by varying the mixing proportion of the dispersion media and/or the temperature of the developer solution. An electrostatic charge-substrate having an electrostatically charged latent image is immersed in the developer solution to convert such latent image into a visible image. Said developer solution comprises a toner consisting of pigment particles and at least one resin selected from the group consisting of alkyd resin, phenol resin and vinyl resin, and a carrier liquid in which said toner is dispersed. The carrier liquid comprises a mixture of two dispersion media having different affinities to said resin. Dispersion media having a larger affinity to the resin include halogenated hydrocarbons, aromatic hydrocarbons and petroleum hydrocarbons containing aromatic ingredients. Dispersion media having a smaller affinity to the resin include isoparaffinic and paraffinic hydrocarbons. |
申请公布号 |
DE1807330(A1) |
申请公布日期 |
1969.08.21 |
申请号 |
DE19681807330 |
申请日期 |
1968.11.06 |
申请人 |
KABUSHIKI KAISHA RICOH |
发明人 |
KASUYA,KAZUHIKO;OHTA,WASABURO;OKUNO,ZENJIRO |
分类号 |
G03G9/12;G03G9/125;G03G9/13;G03G13/10 |
主分类号 |
G03G9/12 |
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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