Electrographic ribbon blender and method
US7137730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F27/11451
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
According to the various aspects of the invention, a method and apparatus for mixing electrographic developer is provided. An elongate shaft having two ends and an intermediate location between the two ends is rotated. Developer is moved away from the intermediate location toward one of the ends with an inner helical ribbon mounted concentrically to the elongate shaft for rotation therewith. Developer is moved away from the one of the ends toward the intermediate location with an outer helical ribbon mounted concentrically to the elongate shaft for rotation therewith, the inner helical ribbon is disposed within the outer helical ribbon. Developer is moved away from the intermediate location toward another of the ends with another inner helical ribbon mounted to the elongate shaft for rotation therewith. Finally, developer is moved away from the another of the ends toward the intermediate location with another outer helical ribbon mounted to the elongate shaft for rotation therewith, the another inner helical ribbon is disposed within the another outer helical ribbon. The outer helical ribbon and the another outer helical ribbon are terminated to provide an opening spanning the inte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.