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Browse Prior Art Database

High Speed Magnetic Tape Unit

IP.com Disclosure Number: IPCOM000091153D
Original Publication Date: 1969-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 82K

Publishing Venue

IBM

Related People

Aaron, RT: AUTHOR

Abstract

The tape unit reads information transversely across the width of a magnetic tape on forestroke and backstroke of a reciprocating cycle.

This text was extracted from a PDF file.
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High Speed Magnetic Tape Unit

The tape unit reads information transversely across the width of a magnetic tape on forestroke and backstroke of a reciprocating cycle.

Tape unit 1, at A, includes tape cartridge 2 containing magnetic tape 3 that is fed into unit 1 for sensing by magnetic head 4. The latter is moved transversely across the width of tape 3, first in a direction indicated by arrow 5 and then in the opposite direction indicated by arrow 6. During each reversal of movement of head 4, tape 3 is stepped by stepping mechanisms shown at B. Motor 7, connected by drive belt 8, drives main drive shaft 9, having head cam 10 and stepping cam 11. Mounted for cooperation with cam 10 is slide 12 that carries head 4 and is movable in the directions indicated by arrows 5 and 6. Signals sensed by head 4 are directed by cable 13 to logic 14 for further conveyance by cable 15 to a utilizing device 16 such as another media recording unit.

Stepping cam 11, at B, has double lobes enabling it to operate lever 17 fixed to shaft 18 and thus operates stepping arm 19. This carries pawls 20 and 21, arranged in proximity to stepping ratchet 22. Magnets 23 and 24 are energized selectively to move associated armatures 25 and 26 inwardly into contact with pawls 20 and 21 to thus cause driving engagement of the selected pawl with ratchet 22 when arm 19 is moved toward ratchet 22. The arrangement is applicable to recording operations as well as reproducing operations.

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