公开(公告)号：BR8205116A

公开(公告)日：1983-08-09

申请号：BR8205116

申请日：1982-08-31

Applicant: BASF AG

Inventor： BALZ WERNER ,  MUENZER WULF ,  SCHOMANN KLAUS DIETER ,  BERGER HEINZ ,  ROOS ROLAND

IPC: G11B15/60 ,  G11B23/04 ,  G11B23/087 ,  G11B23/50 ,  H05F3/02

Abstract: In a tape cassette, particularly a video tape cassette, equalization of electrostatic charges between the two faces of the tape is effected by a connector element or connector elements electrically connecting at least one of two electrically conducting guide elements contacting the front of the tape and provided on the two sides, respectively, of the cassette with at least the associated one of two electrically conducting tape deflecting elements provided in the two respective front corners of the tape cassette. In this manner sticking of the tape to the deflecting elements due to electrostatic attraction therebetween and also the build-up of electrostatic charges along the tape path parallel to the front of the cassette housing due to the transporting of such charges from the deflecting elements as a result of the tape travel, are counteracted.

公开(公告)号：BR8205095A

公开(公告)日：1983-08-09

申请号：BR8205095

申请日：1982-08-31

Applicant: BASF AG

Inventor： ROOS ROLAND ,  SCHOMANN CLAUS DIETER ,  MUENZER WULF

IPC: G11B15/60 ,  G11B23/04 ,  G11B23/087 ,  G11B23/50 ,  H05F3/00

Abstract: A tape guide system wherein a magnetic tape having different resistivities on its back and front travels in contact with guide elements, the members of these elements which are in contact with the tape being matched to the relevant face of the tape in respect of surface resistivity and/or of charge affinity. The members contacting the front of the magnetic tape accordingly consist of a conductive or low-insulation material and the members contacting the back of the tape consist of a high-insulation material. In alternative embodiments, the contact members can consist of a material of low conductivity, or of a plastic with an added conductive material. The novel guide system can be used in any type of high-speed magnetic tape transport mechanism. The invention also concerns the tape guide elements per se, and magnetic tape cassettes employing the tape guide system.