Developing device having first and second groups of scraper blades in axially offset positions and image forming apparatus with the same
US8515314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2010 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jun 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0838
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device is provided with a developer conveyance path for conveying a developer containing nonmagnetic toner and magnetic carrier, a wall portion including a wall surface for defining the developer conveyance path, a developing roller for supplying the toner from the developer conveyance path to an image bearing member, a conveying member extending in the developer conveyance path for conveying the developer while agitating it, a toner supply port arranged above the developer conveyance path for supplying new toner into the developer conveyance path from the outside, and a scraping member arranged at a position below the toner supply port in the developer conveyance path and adapted to scrape off the toner adhering to the wall surface while sliding in contact with the wall surface of the wall portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.