Canon Kabushiki Kaisha

Tohru Matsumoto

Masuo Yamazaki

Mitsuru Uchida

A plastic additive containing thermoplastic polymer is provided in which the glass transition temperature of the thermoplastic polymer is from 40.degree. C. to 80.degree. C., and the plastic additive has magnetic particles dispersed therein. Also, a plastic composition containing an additive containing a thermoplastic polymer and plastic is provided in which the glass transition temperature of the thermoplastic polymer is from 40.degree. C. to 80.degree. C., and the plastic composition has magnetic particles dispersed therein. In addition, a molding formed of a plastic composition containing an additive containing thermoplastic polymer and plastic is provided in which the glass transition temperature of the thermoplastic polymer is from 40.degree. C. to 80.degree. C., and the molding has magnetic particles dispersed therein.

Plastic additive, plastic composition containing the additive and

When a particulate material under molten or dissolved state is atomized by means of a fluid nozzle or a rotary disc type atomizer, a high voltage is applied to obtain particles which are uniform in shape and, for example, spherical with a narrow particle size distribution. Further, if necessary, the particles obtained are subsequently encapsulated in the continuous step.

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Kawasaki, Japan

Tohru Matsumoto