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Device for Self Cleaning Magnetic Record Transducers

IP.com Disclosure Number: IPCOM000095819D
Original Publication Date: 1964-Jul-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

O'Brien, HA: AUTHOR

Abstract

To prevent accumulation of abrasive deposits on the surface of a recording head, the head is adapted to coact with a wiper assembly. In A, the head 1 is in the operative position adjacent the tape 2, and the wiper assembly 3 is held in a non-interfering position by the pin 4 extending from the head.

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Device for Self Cleaning Magnetic Record Transducers

To prevent accumulation of abrasive deposits on the surface of a recording head, the head is adapted to coact with a wiper assembly. In A, the head 1 is in the operative position adjacent the tape 2, and the wiper assembly 3 is held in a non-interfering position by the pin 4 extending from the head.

As the head is rotated to its inoperative position (B), to permit unloading and reloading of tape, the wiper assembly moves with the head, pin 4 describing arc C and wiper blade 5 describing arc C'. Blade 5 thus passes across the surface 6 of the head and removes loose particles. As the head is subsequently restored to its operative position, the wiper assembly is returned to its idle position.

The wiper blade is made of laminated rubber impregnated with molybdenum disulfide. The latter exerts a dry lubricating action at the surface of the head, and the rubber construction of the blade causes it to separate from the head with a snap action in assuming the idle position shown in A. This snap action tends to shake off any loose debris picked up by the blade, thereby avoiding subsequent abrasion of the head by accumulated debris.

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