Mixing device for cross-blending of developer mix in developing stations of electrophotographic printer devices
US4784081A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1986 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Dec 18, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a developing station functioning on the principle of cross-blending in an electrophotographic printing device, two mixing screws running in opposite directions are arranged at a distance from one another. The first mixing screw is situated in a mixing trough provided with a plurality of oblique slots and comprises two mixing strips in the delivery region of the developer mix which are offset by 180.degree. and which neighbor one another. A scraper strip having an actual scraping region and scraping teeth is situated above the two mixing screws. A metering baffle is arranged at an angle relative to this scraper strip, this metering baffle extending through the teeth of the scraper strip and including baffles at its lower end for controlling the flow of the developer mix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.