Grooved drum for tape recording and/or reproducing apparatus

Details Grooved drum for tape recording and/or reproducing apparatus Grooved drum for tape recording and/or reproducing apparatus

H - Electricity

04

N

352/30.02

H04N 5/782 (2006.01) G11B 5/52 (2006.01) G11B 15/61 (2006.01)

Patent

CA 1122705

ABSTRACT OF THE DISCLOSURE A recording and/or reproducing apparatus, such as a video tape recorder, comprises a drum having a peripheral surface on which a magnetic tape can be wrapped, and at least one head for recording signals on the magnetic tape and/or reproducing signals from the magnetic tape by helically scanning the magnetic tape. Grooves are formed in the peripheral surface of the drum to inhibit formation of any thin layer of water between the surface of the drum and the magnetic tape. The lengths of the grooves are substantially parallel to the direction of transport of the magnetic tape and each groove includes a wall portion disposed at an angle greater than 3 degrees to a line joining the crests of the grooves and normal to the direction of transport of the magnetic tape.

325080

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