Single-component development system with intermediate donor member
US5270782A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1991 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for developing an electrostatic latent image on an image support surface. A rotating advancing member advances single component developer material from a toner supply sump in a chamber to an intermediate donor roll. The intermediate donor roll transports a metered amount of developer material to a down roll adjacent to the latent image where the developer material is attracted to the latent image for development thereof. The intermediate donor roll is provided in configuration with the donor roll for preventing escape of developer material from the chamber to increase the life of mechanical components and to decrease background.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.