Filter cloth traveling type belt filter and production method of toner particles
AssigneeCanon Kabushiki Kaisha
InventorsHidekazu Fumita, Yoshinori Tsuji, Takeshi Tsujino, Minoru Omura, Satoshi Iki, Naoto Aiko
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Abstract
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 cake 1 formed on a belt filter is aerated and dehydrated with air, and at the same time, sealing units 6 provided on the upstream and downstream sides of the aeration unit 3 can be operated to efficiently seal aeration air.
Claims9
A filter cloth traveling type belt filter for removing water from a toner particle cake by aeration, the belt filter comprising:
- a filter cloth;
- a tray including a horizontal surface and an end;
- and
- a dehydrating apparatus having an aeration unit and sealing units,
- wherein the belt filter has a constitution in which the filter cloth travels between the tray and the aeration unit,
- wherein the aeration unit has a gas discharging part, and is provided opposite to the tray with a gap therebetween, and both ends of the aeration unit and the tray in a direction orthogonal to a traveling direction of the filter cloth are sealed with a static sealing member,
- wherein the sealing units are provided at an upstream side and a downstream side of the aeration unit in the traveling direction of the filter cloth, and are connected to respective driving units so as to advance to and retreat from the filter cloth,
- wherein the sealing units form a space with the aeration unit, the static sealing member, and a toner particle cake on the filter cloth when the sealing units are advanced to the filter cloth on which the toner particle cake exists and in the space, a gas ejected from the gas discharging part of the aeration unit is accumulated for the aeration of the toner particle cake on the filter cloth, and
- wherein the static sealing member statically seals the end of the tray directly to the aeration unit in a direction orthogonal to the traveling direction of the filter cloth.
Dependencies are inferred from the claim text.