Method and apparatus for electrophotography
US4046466A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Nov 17, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/051
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic method by the use of a photosensitive screen having a number of tiny openings therein and by modulation of corona ion current, wherein a primary electrostatic latent image is first formed on the screen by application of electrostatic charge in conformity to an original image to be reproduced, thus a secondary electrostatic latent image is formed by modulating corona ion current for a plurality of times by the use of one and the same primary electrostatic latent image, and applying to the screen, alternately with the corona ion modulation, a corona ion current of a polarity capable of eliminating the charge polarity of the modulating corona ion current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.