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Toner for use in compositions for developing latent electrostatic images, method of making the same, and liquid composition using the improved toner
Toner for use in compositions for developing latent electrostatic images, method of making the same, and liquid composition using the improved toner
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机译:用于显影静电潜像的组合物中使用的调色剂,其制备方法以及使用改进的调色剂的液体组合物
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摘要
A liquid composition for developing latent electrostatic images comprising toner particles associated with a pigment dispersed in a nonpolar liquid. The salient feature of the invention is that the toner particles are formed with a plurality of fibers or tendrils from a thermoplastic polymer and carry a charge of a polarity opposite to the polarity of the latent electrostatic image. The polymer is insoluble or insolvatable in the dispersant liquid at room temperature. The toner particles are formed by plasticizing the polymer and pigment at elevated temperture and then either permitting a sponge to form and wet-grinding pieces of the sponge or diluting the plasticized polymer-pigment while cooling and constantly stirring to prevent the forming of a sponge while cooling. When cool, the diluted composition will have a concentation of toner particles formed with a plurality of fibers.
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