Method and apparatus for liquid electrostatic development of charge images on a tape-like record carrier
AssigneeU.S. Philips Corporation
InventorsHans-Dieter Hinz, Ulf Rothgordt, Franz Schinke
Life of this patent
Estimating the term…
Abstract
A method of liquid development of charge images formed on a surface of a tape-like record carrier, for example by an electrostatic printer. The record carrier is simultaneously sprayed with developer liquid in two flows which are directed towards each other. As a result, two separate, uniform and oppositely directed flow zones meeting at one common turbulent flow zone are obtained. Both during pre-development and final developement the charge images are brought into contact with a large quantity of fresh developer liquid.
Claims3
A method of electrostatic development of electrostatic charge images impressed on a surface of a smooth, tape-like record carrier in a liquid, by guiding the carrier through a developer tank through which developer liquid is continuously flowing, comprising:
- spraying a first flow of developer liquid against the surface of the record carrier on which the charge image is formed so as to form a first uniform flow zone,
- spraying a second flow of developer liquid against the surface of the record carrier on which the charge image is formed so as to form a second uniform flow zone, the liquid in said first and second flows flowing toward each other on said surface, and the liquid in said first and second flow zones flowing on said surface to a common turbulent flow zone at the meeting of the two uniform flow zones.
Dependencies are inferred from the claim text.