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    • 2. 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。
    • 5. 发明授权
    • Toner processes
    • 墨粉处理
    • US5346797A
    • 1994-09-13
    • US22575
    • 1993-02-25
    • Grazyna E. Kmiecik-LawrynowiczRaj D. PatelGuerino G. Sacripante
    • Grazyna E. Kmiecik-LawrynowiczRaj D. PatelGuerino G. Sacripante
    • G03G9/087G03G9/08
    • G03G9/0804G03G9/0812
    • A process for the preparation of toner compositions comprising(i) preparing a pigment dispersion in a solvent, which dispersion is comprised of a pigment, 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 the formed particles of pigment, resin 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.
    • 一种制备调色剂组合物的方法,包括(i)在溶剂中制备颜料分散体,该分散体由颜料,离子表面活性剂和任选的电荷控制剂组成; (ii)用包含与所述离子表面活性剂相反电荷极性的反离子表面活性剂,非离子表面活性剂和树脂颗粒的胶体混合物剪切所述颜料分散体,从而引起所形成的颜料颗粒的絮凝或杂合, 树脂和电荷控制剂以形成静电结合的调色剂尺寸聚集体; 和(iii)加热静态结合的凝集颗粒以形成由聚合树脂,颜料和任选的电荷控制剂组成的所述调色剂组合物。
    • 8. 发明授权
    • Toner process
    • 调色剂过程
    • US5698223A
    • 1997-12-16
    • US829551
    • 1997-03-28
    • Walter MychajlowskijGuerino G. SacripanteRaj D. PatelGrazyna E. Kmiecik-Lawrynowicz
    • Walter MychajlowskijGuerino G. SacripanteRaj D. PatelGrazyna E. Kmiecik-Lawrynowicz
    • G03G9/08G03G9/087
    • G03G9/0804G03G9/08768
    • A process for the preparation of toner comprising (i) solubilizing an imide based resin in water at pH of from about 10 to about 13 and which solubilizing is accomplished in the presence of nonionic surfactants and anionic surfactants; followed by precipitating the resulting dissolved imide resin into colloidal particles with a size diameter of from about 20 nanometers to about 500 nanometers, and which precipitating is accomplished with a high shearing device operating at a speed of from about 500 to about 2,000 revolutions per minute; acidifying the resulting mixture to a pH of from about 2 to about 4; (ii) preparing a pigment dispersion in water, which dispersion is comprised of a pigment, an oppositely charged ionic surfactant and optionally charge control agent; (iii) shearing (i) and (ii), thereby causing a flocculation of the resin, pigment, surfactants, and optional charge control agent; (iv) heating the resulting flocculent mixture of (iii) with stirring at a temperature of from about 25.degree. C. to about 1.degree. C. below the glass transition temperature (Tg) of the imide resin to effect formation of electrostatically bounded toner sized aggregates, and wherein the imide resin has a Tg of from about 45.degree. C. to about 65.degree. C.; (v) heating the resulting aggregate suspension of (iv) in the presence of additional anionic surfactant selected in an amount of from about 0.01 to about 5 weight percent based on the weight percent of the total reaction mixture solids, and which heating is at a temperature of from about 10.degree. C. to about 55.degree. C. above the Tg of the imide resin; and optionally cooling, and optionally (vi) separating said toner by washing, and thereafter drying said toner.
    • 一种制备调色剂的方法,包括(i)将酰亚胺基树脂溶解在约10至约13的pH下,并且在非离子表面活性剂和阴离子表面活性剂存在下进行增溶; 然后将所得溶解的酰亚胺树脂沉淀成尺寸直径为约20纳米至约500纳米的胶体颗粒,并且以约500至约2000转/分钟的速度运行的高剪切装置完成沉淀; 将所得混合物酸化至约2至约4的pH; (ii)在水中制备颜料分散体,该分散体由颜料,相反电荷的离子表面活性剂和任选的电荷控制剂组成; (iii)剪切(i)和(ii),从而引起树脂,颜料,表面活性剂和任选的电荷控制剂的絮凝; (iv)在低于酰亚胺树脂的玻璃化转变温度(Tg)的约25℃至约1℃的温度下搅拌加热得到的(ⅲ)絮状混合物,以形成静电有界调色剂尺寸 聚集体,并且其中所述酰亚胺树脂的Tg为约45℃至约65℃。 (v)在所选择的另外的阴离子表面活性剂存在下加热得到的(iv)聚集体悬浮液,其量为总反应混合物固体的重量百分比为约0.01至约5重量%,加热为 温度高于酰亚胺树脂的Tg约10℃至约55℃; 并任选地冷却,并且任选地(vi)通过洗涤分离所述调色剂,然后干燥所述调色剂。