Developing device having a space for receiving and increasing pressure of toner received therein
US5047805A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Jul 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device having a toner carrying member for transporting toner to a photosensitive member, a toner supplying member facing to the toner carrying member with an opening therebetween for supplying toner to the toner carrying member and a seal member for substantially closing a toner path. In the developing device a scraping member is further provided in contact with the toner supplying member to scrape the toner therefrom and an accommodating space is formed by the toner carrying member, toner supplying member, seal member and scraping member. Thus the toner transported by the toner supplying member is accommodated in the accommodating space and then supplied to the toner holding member under pressure accompanied by the increase of the toner accommodated therein, whereby an adequate quantity of toner is supplied for development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.