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    • 18. 发明授权
    • Toner processes
    • 墨粉处理
    • US5658704A
    • 1997-08-19
    • US663414
    • 1996-06-17
    • Raj D. PatelGuerino G. SacripanteDaniel A. Foucher
    • Raj D. PatelGuerino G. SacripanteDaniel A. Foucher
    • G03G9/08G03G9/087
    • G03G9/08755G03G9/0804G03G9/0812Y10S430/105
    • A process for the preparation of toner comprised ofi) flushing pigment into a sulfonated polyester resin, and which resin has a degree of sulfonation of from between about 0.5 and about 2.5 mol percent based on the repeat unit of the polymer;ii) dispersing the resulting pigmented sulfonated polyester resin in warm water, which water is at a temperature of from about 40.degree. to about 95.degree. C., and which dispersing is accomplished by a high speed shearing polytron device operating at speeds of from about 100 to about 5,000 revolutions per minute thereby enabling the formation of toner sized particles, and which particles are of a volume average diameter of from about 3 to about 10 microns with a narrow GSD;iii) recovering said toner by filtration;iv) drying said toner by vacuum; andv) optionally adding to said dry toner charge additives and flow aids.
    • 一种制备调色剂的方法,其包括:i)将颜料冲洗成磺化聚酯树脂,并且所述树脂的磺化度基于聚合物的重复单元为约0.5至约2.5摩尔%; ii)将得到的着色的磺化聚酯树脂分散在温度为约40℃至约95℃的温水中,并且该分散是通过以约100的速度操作的高速剪切聚酯装置来实现的 至约5,000转/分钟,从而能够形成调色剂尺寸的颗粒,并且哪些颗粒具有约3至约10微米的体积平均直径,具有窄GSD; iii)通过过滤回收所述调色剂; iv)通过真空干燥所述调色剂; 和v)任选地添加到所述干燥调色剂电荷添加剂和流动助剂中。
    • 19. 发明授权
    • Toner processes
    • 墨粉处理
    • US5648193A
    • 1997-07-15
    • US663420
    • 1996-06-17
    • Raj D. PatelGrazyna E. Kmiecik-LawrynowiczGuerino G. SacripanteDaniel A. Foucher
    • Raj D. PatelGrazyna E. Kmiecik-LawrynowiczGuerino G. SacripanteDaniel A. Foucher
    • G03G9/08G03G9/087
    • G03G9/0804G03G9/08755G03G9/08791
    • A process for the preparation of toner compositions, or particles comprised ofi) flushing a pigment into a sulfonated polyester resin, and which resin has a degree of sulfonation of from between about 2.5 and 20 mol percent;ii) dispersing the resulting sulfonated pigmented polyester resin into water, which water is at a temperature of from about 40 to about 95.degree. C., by a high speed shearing polytron device operating at speeds of from about 100 to about 5,000 revolutions per minute thereby enabling the formation of stable toner sized submicron particles, and which particles are of a volume average diameter of from about 5 to about 200 nanometers;iii) allowing the resulting dispersion to cool to from about 5 to about 10.degree. C. below the glass transition temperature of said pigmented sulfonated polyester resin;iv) adding an alkali metal halide solution, which solution contains from about 0.5 percent to about 5 percent by weight of water, followed by stirring and heating from about room temperature, about 25.degree. C., to a temperature below the resin Tg to induce aggregation of said submicron pigmented particles to obtain toner size particles of from about 3 to about 10 microns in volume average diameter and with a narrow GSD; or stirring and heating to a temperature below the resin Tg, followed by the addition of alkali metal halide solution until the desired toner size of from about 3 to about 10 microns in volume average diameter and with a narrow GSD is achieved; andv) recovering said toner by filtration and washing with cold water, drying said toner particles by vacuum, and thereafter, optionally blending charge additives and flow additives.
    • 一种调色剂组合物的制备方法或由以下组分组成的颗粒:i)将颜料冲洗成磺化聚酯树脂,并且所述树脂的磺化度为约2.5至20摩尔%; ii)通过以约100至约5,000转/分钟的速度操作的高速剪切聚酯装置将所得的磺化着色聚酯树脂分散在水中,该水在约40至约95℃的温度下,由此 使得能够形成稳定的调色剂尺寸的亚微米颗粒,并且哪些颗粒的体积平均直径为约5至约200纳米; iii)使所得分散体冷却至低于所述着色的磺化聚酯树脂的玻璃化转变温度约5至约10℃; iv)加入碱金属卤化物溶液,该溶液含有约0.5%至约5%重量的水,然后在约25℃的约室温下搅拌和加热至低于树脂Tg的温度以诱导 所述亚微米有色颗粒的聚集以获得体积平均直径为约3至约10微米并具有窄GSD的调色剂尺寸颗粒; 或搅拌并加热到低于树脂Tg的温度,然后加入碱金属卤化物溶液,直到达到体积平均直径和窄GSD约3至约10微米的所需调色剂尺寸; 和v)通过过滤回收所述调色剂并用冷水洗涤,真空干燥所述调色剂颗粒,然后任选地混合电荷添加剂和流动添加剂。