Electrostatic recording apparatus with improved recording electrode
US4734720A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1986 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Jul 17, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/348
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic recording apparatus is provided which comprises a recording electrode with a plurality of stylus electrodes and a developing device with a back electrode provided on opposite sides of a recording medium. The recording apparatus is capable of simultaneously processing the forming of and development of a latent image by using the recording electrode which has a magnetic piece embedded at a tip portion thereof. A magnetic field is concentrated in its path and is increased in a narrow gap region between the recording electrode and the back electrode. Toner chains of magnetic particles in the developing process can easily stand upright on the back electrode, and can thus easily and uniformly contact the recording medium. Dot defects on a formed image, are therefore, avoided. The present invention is directed to several embodiments of the magnetic piece and the manner of embedding the magnetic piece in the recording electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.