Portable electrostatic photocopier
US4318608A · kind A · utility
14Cited by
9References
25Claims
0Family size
Inventor
Key dates
| Filing date | Oct 12, 1979 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Oct 12, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The development of a compact non-electrical mains supply based photocopier is described in which a piezo-electric crystal generator or a battery operated capacitor discharge circuit EHT supply is employed for generating the high voltage for charging the photoreceptive paper. The EHT supply for charging the paper is additionally used to provide the source of power for the light source (typically one or more fluorescent gas discharge tubes). The photocopier incorporates all the facilities to charge and subsequently apply toner and fix the latter in place, with a light-proof housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.