Air current classifier, process for preparing toner, and apparatus for preparing toner
US5016823A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | May 3, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B11/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A separator for classifying powder with air current, comprises a powder feed pipe and a classifying chamber, provided in said separator; a guide chamber provided at the upper part of said classifying chamber to communicate with said powder feed pipe; a plurality of introducing louvers provided between said guide chamber and said classifying chamber, at which the powder is flowed in from said guide chamber to said classifying chamber through the openings between said introducing louvers together with carrying air; an inclined classifying plate raised at its central part, provided at the bottom of said classifying chamber; classifying louvers provided along the side wall of said classifying chamber, through the openings of which the air is flowed to produce a whirling stream by which said powder fed into said classifying chamber together with carrying air is centrifugally separated into fine powder and coarse powder; a discharge opening provide at the central part of said classifying plate and from which the classified fine powder is discharged; a fine powder discharge chute connected to said discharge opening; and a discharge opening formed along the periphery of said classifying pl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.