Patent · US Expired

Playback and/or recording device for magnetic recording media, especially still photographs provided with a magnetizable coating

US4358805A · kind A · utility

7Cited by

3References

6Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Otto Stemme · Munich, DE
Frank Staudacher · Haan, DE
Peter Lermann · Feldkirchen-Westerham, DE
Eduard Wagensonner · Aschheim, DE
Karl-Heinz Schultheiss · Taufkirchen, DE

Key dates

Filing date	Sep 10, 1979
Grant date	Nov 9, 1982
Priority date	—
Expiry date	Sep 10, 1999

Classification

Technology area (CPC G)Physics
CPC primaryG11B2005/0002
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A photographic still provided with a magnetizable coating is inserted into a recording/playback device provided with a movably mounted head unit having a set of heads. A rotary motor drives an endless belt in a single direction, the upper and lower runs of the belt always travelling in opposite directions. The head unit is alternately coupled to the upper and to the lower run of the belt, for travel in one and then the opposite direction. Upon each reversal of the travel direction of the head unit, a successive one of the magnetic heads is activated, so as to track a meandering track on the magnetic coating.

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