Development system
US5204719A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1992 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Feb 10, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0643
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus in which an electrostatic latent image recorded on a photoconductive member is developed with toner. A donor roll, spaced from the photoconductive member, transports toner to a development zone adjacent the photoconductive member, an electrode member is positioned in the development zone between the photoconductive member and the donor roll. The electrode member is electrically biased to detach toner from the donor roll so as to form a toner powder cloud in the space between the electrode member and the photoconductive member. In this way, the toner from the donor powder cloud develops the latent image recorded on the photoconductive member. A DC current is transmitted through the electrode member. A magnetic member interacts with the DC current flowing through the electrode member to substantially dampen vibrations of the electrode member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.