发明授权
- 专利标题: Toner processes
- 专利标题(中): 墨粉处理
-
申请号: US09657273申请日: 2000-09-07
-
公开(公告)号: US06190820B1公开(公告)日: 2001-02-20
- 发明人: Raj D. Patel , Michael A. Hopper , Walter Mychajlowskij
- 申请人: Raj D. Patel , Michael A. Hopper , Walter Mychajlowskij
- 主分类号: G03G9087
- IPC分类号: G03G9087
摘要:
A process for the preparation of toner by, for example (i) generating by emulsion polymerization in the presence of an initiator a first resin latex emulsion; (ii) generating in the presence of an oil soluble initiator by solution polymerization a second resin latex; (iii) mixing (ii) with a colorant; (iiib) mixing the resin latex emulsion of (i) with the resin/colorant mixture of (iii) to provide a blend of a resin and colorant; (iv) adding an aqueous inorganic cationic coagulant solution of a metal salt and optionally an organic cationic coagulant to the resin/colorant blend of (iiib); (v) heating at a temperature of from about 5° C. to about 10° C. below the resin Tg of (i), to form aggregate particles; (vi) adjusting the pH of (v) by the addition of a base; (vii) heating the aggregate particles of (v) at temperatures of from about 5° C. to about 50° C. above the Tg of the resin of (i), followed by the addition of an acid.
信息查询