Method and apparatus for using vibratory energy to reduce transfer deletions in electrophotographic imaging
US5081500A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Jul 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic device includes a flexible belt-type sheet of paper or other transfer member into intimate contact with the charge retentive member, bearing a developed latent image and brings a charge retentive surface at a transfer station for electrostatic transfer of toner from the charge retentive surface to the sheet. At the transfer station, a resonator suitable for generating vibratory energy is arranged in line contact with the back side of the charge retentive surface, to uniformly apply vibratory energy to the charge retentive member. Toner is released from the electrostatic and mechanical forces adhering it to the charge retentive surface at the line contact position. In those areas of the latent image characterized by non-initimate contact of the sheet with the charge retentive surface, toner is transferred across the gap by the electrostatic transfer process, despite the fact that the charge on the paper would not normally be sufficient to attract toner to the sheet from the charge retentive surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.