发明名称 |
Process for Producing Toner for Liquid Developer, Toner for Liquid Developer, Process for Producing Liquid Developer, Liquid Developer, and Image Forming Apparatus |
摘要 |
A process for producing a toner for a liquid developer includes: preparing an emulsion liquid containing an aqueous dispersion medium and, dispersed therein, dispersoids containing a resin material which has an acidic group having a salt structure formed with a basic substance and has an acid value of from 5.0 to 20 mg KOH/mg when it is in a form of an acidic substance without forming a salt with the basic substance, a colorant and an organic solvent which dissolves the resin material; coalescing the dispersoids contained in the emulsion liquid to obtain coalescent particles; removing the organic solvent contained in the coalescent particles to obtain colored resin particles; washing the colored resin particles with an aqueous liquid (first washing step); dispersing the washed colored resin particles in an aqueous liquid and performing an acid treatment to obtain an acidic dispersion liquid having a hydrogen ion exponent (pH) adjusted to 3.0 to 6.0; washing the colored resin particles subjected to the acid treatment with an aqueous liquid (second washing step); and drying the colored resin particles subjected to the second washing step.
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申请公布号 |
US2010015546(A1) |
申请公布日期 |
2010.01.21 |
申请号 |
US20090489267 |
申请日期 |
2009.06.22 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
OKI MASAHIRO;UENO YOSHIHIRO |
分类号 |
G03G9/00 |
主分类号 |
G03G9/00 |
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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