Vibratory assisted direct marking method and apparatus
US5504564A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Dec 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2217/0058
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a method and apparatus for producing an image on the image receiving member. The method and apparatus employ a photoconductive member that is charged by the deposition of charged marking particles on an outer surface thereof. Subsequently, selective regions of the photoconductor are selectively exposed to light patterns to cause the photoconductor to exhibit a photoresponse, thereby collapsing the internal electric field in the exposed regions but not in the unexposed regions. When a field neutralizing bias and acoustic energy are applied in a transfer region, toner in the unexposed regions is transferred to an intermediate member or any substrate interposed between the photoconductive surface and the biasing electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.