Agitating member for a developing apparatus
US5189474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Apr 18, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0889
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus of the type including a developing roller disposed in a development box, a stirring roller parallel spaced apart from the developing roller, and a toner replenisher pipe disposed in the stirring roller, wherein the stirring roller has a substantially hollow cylindrical shape and includes a plurality of axial ribs extending parallel to a longitudinal axis of the stirring roller and disposed equidistantly from the longitudinal axis, and a plurality of helical blades integral with the axial ribs and skewed relative to the longitudinal axis of the stirring roller, said hollow cylindrical stirring roller being composed of at least two identical segments which are divided by a plane extending through said longitudinal axis of said stirring roller. The stirring roller is simple in construction and can be manufactured at a low cost. The developing apparatus further includes a separator for receiving an excess developer which is removed from the outside surface of the developing roller and direct it unto the stirring roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.