Browse Prior Art Database

Tape Guide Design

IP.com Disclosure Number: IPCOM000044592D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

Andresen, R: AUTHOR [+4]

Abstract

A known tape guiding mechanism using air bearing principles depends on one fixed flange (reference edge) and one compliant flange to force the tape against the fixed flange. The air bearing provides air flow distributed along the outer surface to suspend the tape. The cross section of the air channel suspending the tape is shown schematically in Fig. 1. An improved configuration of Fig. 2 allows flow at the bottom edge of the bearing. A fixed flange is required for lateral positioning of the tape, but flow is provided around the bottom edge of the tape by milling openings in the edge of the fixed flange where the tape rides. This provides a path for the air to flow down as well as up. The slots or holes provide adequate flow to give uniform fly heights over the bearing, thus removing the tension gradient.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 89% of the total text.

Page 1 of 2

Tape Guide Design

A known tape guiding mechanism using air bearing principles depends on one fixed flange (reference edge) and one compliant flange to force the tape against the fixed flange. The air bearing provides air flow distributed along the outer surface to suspend the tape. The cross section of the air channel suspending the tape is shown schematically in Fig. 1. An improved configuration of Fig. 2 allows flow at the bottom edge of the bearing. A fixed flange is required for lateral positioning of the tape, but flow is provided around the bottom edge of the tape by milling openings in the edge of the fixed flange where the tape rides. This provides a path for the air to flow down as well as up. The slots or holes provide adequate flow to give uniform fly heights over the bearing, thus removing the tension gradient. It also removes the instability of the lower edge, since flow is not being interrupted by the tape edge and guide irregularities. Flow can also be improved by allowing air to escape up through the compliant flange as well. As Fig. 1 indicates, the air must turn around the corner of the air bearing to escape from the top. This can be improved by placing holes through the compliant flange, as illustrated in Fig. 3. The holes allow the flow to continue straight without turning a corner. The arrangement evens the air flow by providing a path for the air to escape on both edges of the tape. In addition, it improves the stability of the lower edge of...