Browse Prior Art Database

Loop Processing Cavity

IP.com Disclosure Number: IPCOM000095011D
Original Publication Date: 1965-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Badum, PJ: AUTHOR [+3]

Abstract

The read-write processing chamber is for tape belt 10 having an outer magnetic surface. Belt 10 is positioned in chamber 11. This has a parallel-sided vacuum column 18 and two tapered vacuum columns 16 and 17 having common planar wall 19.

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Loop Processing Cavity

The read-write processing chamber is for tape belt 10 having an outer magnetic surface. Belt 10 is positioned in chamber 11. This has a parallel-sided vacuum column 18 and two tapered vacuum columns 16 and 17 having common planar wall 19.

Capstan 13 continuously rotates and projects into the processing chamber to engage belt 10. Such occurs at the intersection of columns 16 and 18 to rotate belt 10 and to move it past a read-write head assembly 21. Columns 16 and 17 communicate at their bottoms with valves V1 and V2, respectively. Column 18 communicates with valve V3 in connecting passage 20. These valves provide a lower pressure with respect to the gas pressure being provided into the center of the belt through slot 12. The latter is centrally located on one or each side of column 18 to maintain belt 10 in chamber 11.

The vacuum pressure from valve V3 maintains closed a pivotable door 23 which can be made of flexible material. When it is desired to remove belt 10 from chamber 11, the pressures through valves V1 and V2 are reversed with respect to the pressure applied through slot 12. V3 is closed. Valve V4 has a higher pressure applied to it so that flexible door 23 moves to position 23a. Belt 10 is sucked in the direction of valve V4 into a storage pocket not shown.

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