| 摘要 |
Tape recording and playback apparatus (10) utilising magnetic tape as a recording medium and incorporating a tape-driving capstan (12) upon which undesirable deposits of recording medium and/or other debris can build up. The apparatus (10) incorporates an intermittently operated capstan cleaner (20) mounted on a pivotable arm (16). The position of the arm (16) is maintained by a cam (28) in opposition to a spring (24). The cam (28) is normally in a position (Fig 1) that holds the capstan cleaner (20) out of contact with the capstan (12). The cam (28) is coupled to a tape cassette loading/discharging mechanism to be rotated to a position (Fig 2) that allows the spring (24) to pivot the arm (16) to bring the capstan cleaner (20) into contact with the capstan (12) when the tape cassette is being loaded into and/or discharged from the apparatus. Capstan cleaning is entirely automatic, adequately frequent, and cannot interfere with recording/playback operations. Excessive wear of the capstan is avoided since the cleaning contact is intermittent rather than continuous. <IMAGE> |
