Electrostatic charge information reproducing method
US5739834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1994 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Sep 12, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G16/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A master electric charge retaining medium 2 having electrostatic charge information recorded thereon is disposed face-to-face with a reproductive electric charge retaining medium 3, and a voltage is applied between the respective electrodes of the two electric charge retaining media to induce an electric discharge, thereby inversely reproducing the electrostatic charge information on the reproductive electric charge retaining medium, as shown in FIG. 2(b). It is possible to effect the reproduction any number of times while preventing the lowering in the contrast of the master electric charge retaining medium by making the electrostatic capacity of the master electric charge retaining medium adequately larger than the electrostatic capacity of the reproductive electric charge retaining medium. In addition, a master electric charge retaining medium 2 having an insulating layer with a relatively high softening point and a reproductive electric charge retaining medium 4 having a thermosoftening resin layer 4a are disposed face-to-face with each other to induce electric charge on the thermosoftening resin layer in correspondence to the electrostatic charge image on the master electric c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.