| 摘要 |
PURPOSE:To make card setting easy by forming an arc form positioning edge at a fixed distance from the track center to a sheet and providing guide parts for aligning the centers of the tracks and turntable. CONSTITUTION:A sheet 32 is formed in card form and visual information is provided to the front thereof and spiral tracks (e) on its back. An arc form positioning edge alpha is provided in the position at a fixed distance R from the center of the tracks (e) and one side of nearly rectangular shape in outside circumference is created by the edge alpha. On the other hand, quide pins 33, 34 are erected away by the distance R from the turntable center, at the sheet mounting part of the main unit of the machine. The sheet 32 is positioned and mounted to the main unit 47 of the machine as its edge alpha is pressed to the pins 33, 34 whereby the track center is aligned to the turntable center. Thereafter, the head turning together with the turntable moves along the track (e), whereby recording and reproducing are accomplished. |
