发明授权
- 专利标题: Fluorescent toner processes
- 专利标题(中): 荧光调色剂工艺
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申请号: US299392申请日: 1994-09-01
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公开(公告)号: US5554480A公开(公告)日: 1996-09-10
- 发明人: Raj D. Patel , H. Bruce Goodbrand , Grazyna E. Kmiecik-Lawrynowicz , Michael A. Hopper , Melvin D. Croucher , James M. Duff
- 申请人: Raj D. Patel , H. Bruce Goodbrand , Grazyna E. Kmiecik-Lawrynowicz , Michael A. Hopper , Melvin D. Croucher , James M. Duff
- 申请人地址: CT Stamford
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/09 ; G03G9/087
摘要:
A process for the preparation of fluorescent toner compositions comprising(i) preparing a pigment dispersion in a solvent, which dispersion is comprised of a pigment or dye, an ionic surfactant and optionally a charge control agent;(ii) shearing the pigment dispersion with a latex mixture comprised of a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, a nonionic surfactant and resin particles, thereby causing a flocculation or heterocoagulation of pigment, resin particles and charge control agent to form electrostatically bound toner size aggregates; and(iii) heating the statically bound aggregated particles to form said toner composition comprised of polymeric resin, pigment and optionally a charge control agent, and wherein the pigment or dye is excitable by ultraviolet light in the frequency range of from about 254 to about 366 nanometers and fluoresces in the visible spectrum of from about 400 to about 700 nanometers.
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