Device for continuously mixing powder and process for producing toner for developing electrostatic image
US5178460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Oct 30, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/531
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A continuous mixing device for mixing continuously powder, comprising a casing having a mixing chamber inside of the device, a rotary shaft included within said casing, a rotatable stirring blade axially supported with said rotary shaft, and a fixed blade fixed inside of said casing, wherein said stirring blades and fixed blades are provided in plural numbers. A process for producing a toner composition of developing electrostatic latent images, comprising introducing colored particles having at least a binder resin and a colorant, and a powdery additive into a continuous mixing device, said continuous mixing device comprising a casing having a mixing chamber inside of the device, a rotary shaft included within said casing, a rotatably stirring blade axially supported with said rotary shaft, and a fixed blade fixed inside of said casing, wherein said stirring blades and fixed blades are provided in plural numbers; and mixing the colored particles and the powdery additive to obtain a toner composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.