| 摘要 |
<p>1334721 Magnetic storage devices COMMISSARIAT A L'ENERGIE ATOMIQUE 14 May 1971 [22 May 1970] 15125/71 Addition to 1294319 Heading H3B In a storage matrix in which parallel magnetic wires are located in tunnels in a moulded body overlaid by a folded set of parallel insulated word drive wires 2, the drive wires are formed as a printed circuit by selectively etching a copper face of a flexible support 1 of epoxy resin which may contain a web of glass fibres. The constructional method involves mounting a set of tunnel-forming parallel nylon threads or nickel chromium wires 5 in a frame 4, the frame together with a pre-polymerized epoxy resin plate 3 being then placed over one half of the printed circuit word drive wires 2. A further pre-polymerized epoxy resin plate 6 is placed over the frame threads or wires, and the exposed portion of the printed circuit word drive wires folded over the plate. The assembly is bonded using heat and pressure to melt and subsequently thermoset the plates 3 and 6 to produce a homogeneous structure. The exposed portion of the frame is subsequently removed by sawing, and the tunnel-forming threads or wires 5 withdrawn to allow magnetic wires to be inserted. In a modification the tunnel-forming threads or wires, and optionally spacer threads, are wound on a cylinder-mounted flexible adhesive sheet which is then separated from the cylinder by cutting. The wire-supporting adhesive sheet is then placed against one of the plates of prepolymerized resin, and the threads or wires bonded to the plate by applying restricted heat and pressure to partially set the resin. The adhesive sheet is then stripped off and the bonded assembly of plate and threads or wires used in place of one of the plates 3 or 6 and the wired frame 4 in the assembly process.</p> |
