发明名称 |
METHOD FOR MANUFACTURING TONER, TONER AND IMAGE FORMING METHOD |
摘要 |
A method for manufacturing a toner, including at least: dissolving or dispersing a toner material including at least any one of a binder resin and a precursor of a binder resin in an organic solvent which is dispersed in a dispersant-including aqueous medium; forming particles by removing the organic solvent; washing the particles; forming voids in the particles by heating to a temperature T while or after dispersing the particles in an aqueous medium; forming toner base particles by adding a charge controlling agent; and adding an external additive to the toner base particles to obtain toner particles, wherein the T is between a glass transition temperature Tg of the toner particles and Tg+25° C., and the toner has a cross-sectional void fraction Sp/St of 0.1% to 15.0%, where St is a cross-sectional area of the toner particles, and Sp is a cross-sectional area of the voids. |
申请公布号 |
EP2756357(A1) |
申请公布日期 |
2014.07.23 |
申请号 |
EP20120832325 |
申请日期 |
2012.09.12 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
TADA, KEISUKE;UEHARA, KENICHI;MISAWA, DAISUKE;OIKAWA, AYUMI;ENDOH, HIROSHI |
分类号 |
G03G9/087;G03G9/08 |
主分类号 |
G03G9/087 |
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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