Flexible donor belt
US5717986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1996 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Jun 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0651
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A development system which includes a flexible donor belt having groups of electrode array near the surface of the belt is disclosed. The Electrode array has group areas in which perform the function of: Loading; Transferring; Developing; Transferring and Unloading. Each electrode array group area is independently addressable and operatively connected to voltage source in order to supply a voltage in the order of .quadrature.0-1000 volts AC or DC to each group area. The electrodes array group area picks up the toner from the magnetic brush. An electrode array group area connected to the voltage source via phase shifting circuitry such that a traveling wave pattern is established. The electrostatic field forming the traveling wave pattern pushes the charged toner particles about the surface of the donor belt from the magnetic brush to the photoconductive belt where they are transferred to the latent electrostatic images on the belt by an electrode group area which generates a toner cloud in the development zone. Thereafter, toner is moved by an electrode array group area where an electrode group area is bias to unload remaining toner off the belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.