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    • 7. 发明授权
    • Electrostatic latent image developing toner and method for production
thereof
    • 静电潜像显影调色剂及其制造方法
    • US4980257A
    • 1990-12-25
    • US301719
    • 1989-01-26
    • Masahiro AnnoJunji MachidaEiichi Sano
    • Masahiro AnnoJunji MachidaEiichi Sano
    • G03G9/087G03G9/08G03G9/093
    • G03G9/09314G03G9/0825G03G9/0827G03G9/09392Y10T428/2998
    • In an electrostatic latent image developing toner which comprises spherical core particles composed of at least a coloring agent and a thermoplastic resin and an outer shell layer containing at least a thermoplastic resin and applied in the form of a coating fast to the core particles, the outer shell layer applied in the form of a coating is formed by (a) thermally fixing minute particles of one thermoplastic resin and minute particles of another thermoplastic resin on the surface of the core particles thereby enabling part of the aforementioned other thermoplastic resin to retain the original particulate form thereof intact in the produced coating or (b) thermally fixing minute particles of a thermoplastic resin and minute particles of a thermosetting resin or minute particles of a resin possessing a gelling component in a specific amount on the surface of the core particles thereby enabling the minute particles of the resin to retain the original particulate form thereon intact in the produced coating and impart a minutely rugged surface to the coating.
    • 在包含由至少着色剂和热塑性树脂构成的球形核粒子和至少含有热塑性树脂的外壳层的静电潜影显影用调色剂中,以与芯粒子相近的形式涂布, 通过(a)将一种热塑性树脂的微小颗粒和另一种热塑性树脂的微小颗粒热定影在芯颗粒的表面上,从而使得上述其它热塑性树脂的一部分能够保持原始的,形成涂层形式的壳层 (b)将热塑性树脂的微小颗粒和热固性树脂的微小颗粒或具有特定量的胶凝成分的树脂的微小颗粒热固定在芯颗粒的表面上,从而使得能够 树脂的微小颗粒在t上保持其原始颗粒形式 他生产了涂层,并给涂层带来了微小的凹凸不平的表面。