Developing apparatus for electrophotographic apparatus
US4967691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus is provided for use in an electrophotographic apparatus. The developing apparatus includes a developer case in which a developer having a mixture of a toner and a carrier is stored, a developing roll which is located in the developer case and which is partially exposed to the outside of the developer case adjacent to a photosensitive drum, a front stirring roll which is located below the developing roll in the developer case to make a flow of developer in the developer case and below the developing roll, a rear stirring roll which is located rearwardly of the front stirring roll in the developer case to create a flow of developer in a direction opposite to the direction of flow of the developer produced by the front stirring roll, and a guide plate located between the front and rear stirring rolls for guiding most of the developer which falls form the developing roll towards the front stirring roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.