Developing unit of dry type
US4700659A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1982 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | May 19, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0822
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing unit is disclosed which utilizes a two-component developer comprising a toner and a carrier to develop an electrostatic latent image formed on a photosensitive member. The unit comprises a doctor for controlling the amount of developer supplied onto a developing sleeve, a flow plate for receiving a quantity of developer scraped off by the doctor and allowing it to flow therealong, at least one deflector plate disposed at an angle on the flow plate for causing the developer to be directed toward one side, and a screw assembly for conveying the developer which has been directed toward one side to the other side and returning it to the interior of a developer vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.