Developing apparatus having developer layer regulation means
US5084733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus including a developer carrying member for carrying a developer, a magnet disposed in the developer carrying member, and an elastic regulating member contacting the developer carrying member to regulate a thickness of a layer of the developer formed on the developer carrying member. The developer carrying member has a roughened surface over a width thereof larger than a width of the portion of the elastic regulating member contacting the developer carrying member while the magnet forms a magnetic field in a marginal region of the roughened surface of the developer carrying member not contacting the elastic regulating member to remove magnetic developer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.