Browse Prior Art Database

Dielectric Recording System

IP.com Disclosure Number: IPCOM000096544D
Original Publication Date: 1963-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Braun, RE: AUTHOR [+2]

Abstract

The arrangement is a method of dielectric recording of binary information.

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Dielectric Recording System

The arrangement is a method of dielectric recording of binary information.

A dielectric medium is charged uniformly in the preconditioning stage by a constant voltage E. The charged medium is then moved past a recording electrode to which relatively small voltages are applied. The polarity depends on the binary information to be stored. The charge predeposited on the medium establishes a potential across the recording air gap which exceeds the air breakdown potential when E1 is applied. Such potential is well below breakdown when E2 is applied. In the former case, the medium is discharged. In the latter case, the medium retains the original electric charge, thus providing a charge - no charge pattern in accordance with the binary information.

The medium is then subjected to a fixing process by which a liquid or equivalent developer is sprayed on the medium. The developer holds negative charges so that it will be attracted only by the regions of the medium that retain the original positive charge. An optical readout device can then be used to reproduce the recorded information.

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