Electrostatic printing apparatus and method
US4516847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1982 |
| Grant date | May 14, 1985 |
| Priority date | — |
| Expiry date | Dec 3, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/167
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus is provided for printing on a receptor such as paper. An electrostatic image is formed on a dielectric-coated drum in a controlled environment to minimize the creation of chemical contaminants. The image is then toned by wiping toner over the image from a toner delivery system which includes a mouth shaped to cause a vortex in the toner to improve toner flow. After toning the image is transferred to the receptor under pressure from a roller which is skewed with reference to the drum. The pressure in the nip is sufficient to also cause the toner to be fused to the receptor. An image eraser is also provided in the controlled environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.