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Browse Prior Art Database

Capstan Surface Grooves to Improve Tape Guidance

IP.com Disclosure Number: IPCOM000075110D
Original Publication Date: 1971-Aug-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Lewis, JW: AUTHOR [+2]

Abstract

This surface groove configuration eliminates tape slippage, reduces tape ripple and improves tape guidance of relatively wide three inch tape 1 which is being frictionally driven by capstan 2.

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Capstan Surface Grooves to Improve Tape Guidance

This surface groove configuration eliminates tape slippage, reduces tape ripple and improves tape guidance of relatively wide three inch tape 1 which is being frictionally driven by capstan 2.

The tape is held against the capstan by the tape tension produced by vacuum columns 3 and 4, View A. The capstan surface is rubber-like and includes one of the two surface groove configurations shown in perspective side view at B and C.

The brick pattern of View B consists of a combination of axial grooves 5 formed about the 360 degrees circumference of the capstan, and intermittent circumferential grooves 6 which are dispersed in a symmetrical pattern about the circumferential center of the capstan.

The helical pattern of View C consists of grooves cut in the capstan surface to form right and left helices 7 and 8 to produce a symmetrical groove pattern about the circumferential center of the capstan.

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