Browse Prior Art Database

Xerographic Toner Manufacture

IP.com Disclosure Number: IPCOM000048304D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Baird, BW: AUTHOR [+5]

Abstract

Xerographic toner is size-classified by the use of a cyclone separator whose exit tube duct length is adjusted to decrease the separator's efficiency so that toner particles smaller than a desired size exit the separator as waste, through the separator's top-disposed exit duct.

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Xerographic Toner Manufacture

Xerographic toner is size-classified by the use of a cyclone separator whose exit tube duct length is adjusted to decrease the separator's efficiency so that toner particles smaller than a desired size exit the separator as waste, through the separator's top-disposed exit duct.

The figure shows a toner manufacturing plant which includes toner raw materials 10 and 11 which are fed to jet mill 12. The milled materials are then supplied to a coarse classifier 13 which operates to establish the limit for large size toner particles. Excessively large particles are returned to the remilling.

Large size classified toner material is now supplied to cyclone separator 15, where it is small size classified. Separator 15 includes an adjustable tube 16 which is located on the outside of stationary tube 17. Adjustment rods 18 are attached to the top of tube 16 so as not to interfere with the separator's laminar airflow, or block airflow through the entrance opening of the tube. By the use of an external tube 16, rods 18 may be readily adjusted with minimum time and effort.

The finished toner product exits at tube 19.

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