Device for detecting an end of a cassette tape

摘要

A device detects an end of a tape in a tape cassette. The tape cassette comprises a first reel having an opaque tape wound thereon, with one end of the tape connected to a transparent first leader which is fixed at its other end to the hub of the reel. A second reel receives the tape as it is wound. This tape is connected to one end of a second transparent leader which is fixed at its other end to the second reel hub. A cassette containing the reels has first and second windows in at least one side wall. The tape end detection device comprises at least one light-emitting element and first and second light-receiving elements respectively disposed on opposite sides of the tape, relative to the first and second windows. The light-receiving elements detect the tape ends in resonse to their reception of light passing through the windows.