| 摘要 |
<p>PURPOSE:To simplify and miniaturize constitution and to reduce cost by calculating shift information of a tape (tape speed) from the rotational periods of a supply side reel and a winding side reel, and from the radiuses of both reels, driving and controlling at least either one of both reels. CONSTITUTION:The tape is wound between the supply reel 1 and the winding side reel 2 through a drum 3, and driving motors 5 and 6 are respectively provided in the reels 1 and 2. The driving motor 7 is also provided in the drum 3. For detecting the rotary periods of the reels 1 and 2, frequency generators (FG) 8 and 9 are provided, the the rotary periods of both reels 1 and 2 are detected. A control means 10 operates the detected rotary periods and the radiuses of both reels 1 and 2, operates shift information of the tape, namely, the tape speed, and drives and controls at least one of both reels 1 and 2 based on the tape speed. Thus, constitution can be simplified and miniaturized, and cost can be reduced.</p> |
