Canon Kabushiki Kaisha

Satoshi Iki

Yoshinori Tsuji

Takeshi Tsujino

Hidekazu Fumita

Minoru Omura

Naoto Aiko

Shinya Matsumura

A production apparatus and a production method of toner particles are provided which efficiently and stably reduce the water content of the wet toner particle cake obtained by separating and washing toner particles from toner particle dispersion in a production apparatus of toner particles granulated in a wet process. A wet toner particle cakeformed on a belt filter is aerated and dehydrated with air, and at the same time, sealing unitsprovided on the upstream and downstream sides of the aeration unitcan be operated to efficiently seal aeration air.

Filter cloth traveling type belt filter and production method of toner particles

In a process for producing toner particles by granulation carried out in an aqueous medium, a process for producing toner particles is provided which toner particles have a sharp particle size distribution and can achieve a high image density. In a process for producing toner particles to be obtained by granulating in an aqueous medium a colorant composition containing at least a colorant, an apparatus which forms the toner particles by granulation has a granulation tank and a stirrer, and, where the internal volume of the granulation tank is represented by A (L) and the volume of an air layer portion in the interior of the granulation tank by B (L), the air layer portion proportion B/A satisfies the following expression (1):0.05&#x2267;B/A&#x2003;&#x2003;(1).

Process for producing toner particles

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Tsukubamirai, Japan

Satoshi Iki