Gas current classifier and process for producing toner

A gas current classifier which comprises a classifying chamber, a material feed nozzle for introducing a material powder into the classification zone of the classifying chamber, and a Coanda block for classifying the material powder thus introduced by the Coanda effect to separate the powder into at...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TSUJI, YOSHINORI, MITSUMURA, SATOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MAGNETOGRAPHY OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS SEPARATING SOLIDS FROM SOLIDS SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS SORTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A gas current classifier which comprises a classifying chamber, a material feed nozzle for introducing a material powder into the classification zone of the classifying chamber, and a Coanda block for classifying the material powder thus introduced by the Coanda effect to separate the powder into at least a fraction of fine powder and a fraction of coarse powder, wherein the material feed nozzle has a material receiving opening for introducing the material powder into the material feed nozzle the material powder is introduced into the classification zone from an orifice of the material feed nozzle while its flow is accelerated by the gas stream within the material feed nozzle and the Coanda block is provided at a position higher than the orifice of the material feed nozzle.