Patent · US Expired

Process and apparatus for rendering visible charge images

US4392711A · kind A · utility

133Cited by

5References

11Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Roland Moraw · Naurod, DE
Gunther Schadlich · Wiesbaden, DE

Key dates

Filing date	Mar 20, 1981
Grant date	Jul 12, 1983
Priority date	—
Expiry date	Mar 20, 2001

Classification

Technology area (CPC G)Physics
CPC primaryG03G16/00
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A process and apparatus for rendering visible an electrostatic charge image. The visible image is formed on the surface of a liquid by positioning a charge image adjacent the liquid at distances of about 10 to 1,000 .mu.m from the surface of the liquid without contacting the liquid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.