| 摘要 |
1503067 Assemblies of flexible record discs INTERNATIONAL BUSINESS MACHINES CORP 16 Nov 1976 [8 Dec 1975] 47659/76 Addition to 1454254 Heading G5R A stack of flexible record discs rotating in an ambient fluid (e.g. air) pressure which resists widening of any inter-disc gap is disturbed, e.g. by an air jet, to form a partial split in the stack at a position estimated to be that required for transducing access, the location of the partial split (identified, e.g. by distinguishable indicia recorded on the edges of the discs) is compared with that required, and, on detection of coincidence, the ambient pressure is changed to one which establishes a stable circumferentially uniform split to admit a transducer. |
