SYSTEM AND METHOD FOR CONVENTIONAL PARTICLE ROUNDING UTILIZING CONTINUOUS EMULSION-AGGREGATION (EA) TECHNOLOGY
PROBLEM TO BE SOLVED: To provide a system and method for producing round-shaped conventional toner particles, which are more efficient, do not impact an internal structure, and allow for reducing energy consumption.SOLUTION: A continuous process for rounding conventional toner particles includes: fo...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a system and method for producing round-shaped conventional toner particles, which are more efficient, do not impact an internal structure, and allow for reducing energy consumption.SOLUTION: A continuous process for rounding conventional toner particles includes: forming a slurry by mixing a dispersant and/or a liquid with toner particles; heating the slurry to a first temperature beyond a glass transition temperature to form a coalesced toner particle slurry; quenching the coalesced toner particle slurry to a second temperature below the glass transition temperature after a residence time has elapsed; and recovering the quenched particle slurry at an outlet. Circularity of the toner particles is approximately 0.940-0.999, and the time required for the heating, quenching and recovering steps is less than 20 minutes. An apparatus for practicing the novel continuous coalescence of toner particles, includes an inlet passage, a first heat exchanger coupled to the inlet passage, a residence time coil coupled to the first heat exchanger, a cooling device coupled to the residence time coil; and an outlet passage coupled to the cooling device.SELECTED DRAWING: None
【課題】効率的で内部構造に影響を与えず、エネルギー消費の削減を可能にする、球形状の従来型トナー粒子製造システムとその方法を提供する。【解決手段】従来型トナー粒子を丸めるための連続法は、分散剤および/または液体をトナー粒子と混合することによりスラリーを形成し、ガラス転移温度を超える第一の温度に加熱して、融着トナー粒子スラリーを形成し、滞留時間の経過後、ガラス転移温度よりも低い第二の温度に融着粒子スラリーを急冷し、出口で回収することによる。トナー粒子の真円度は、約0.940〜0.999で、加熱、急冷、および回収段階に必要な時間は、20分未満である。トナー粒子の新規な連続融着を実践するための装置は、流入通路、流入通路に連結された第一の熱交換器、第一の熱交換器に連結された滞留時間コイル、滞留時間コイルに連結された冷却装置、および、冷却装置に連結された流出通路を具備する。【選択図】なし |
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