Method and apparatus of classifying fine particles
AssigneeFuji Xerox Co., Ltd.
InventorsSeiichi Takagi, Okimasa Okada, Tetsuo Ohta
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Abstract
A method of classifying fine particles includes: introducing a fine particle dispersion containing the fine particles to a micro flow channel having an inlet part and a collection part from the inlet part; moving the fine particles to an inner upper side of the micro flow channel by an electric field applied in a gravitational direction; and delivering the fine particle dispersion in a laminar flow state to the collection part. The delivering step includes classifying the fine particles according to differences in settling velocity among the fine particles.
Claims13
A method of classifying fine particles, comprising:
- introducing a fine particle dispersion containing the fine particles to a micro flow channel having an inlet part and a collection part from the inlet part;
- moving all of the fine particles to an inner upper side of the micro flow channel by an electric field applied in a gravitational direction;
- and
- delivering the fine particle dispersion in a laminar flow state to the collection part;
- wherein the delivering step includes classifying the fine particles according to differences in settling velocity among the fine particles.
An apparatus of classifying fine particles dispersed in a medium liquid in a fine-particle dispersion, comprising:
- an introducing part including an introducing channel that introduces the fine-particle dispersion into a micro flow channel;
- an electric field applying part that applies an electric field in a gravitational direction that moves all of the fine particles to an inner upper side of the micro flow channel;
- a classification part that classifies the fine particles by settling or floating the fine particles in a laminar flow;
- and
- a collection part including a collection channel from which classified fine particles are collected.
Dependencies are inferred from the claim text.