| 摘要 |
<p>PURPOSE:To automatically release a metal position, by providing an eject operation detecting means of a cassette tape and making the ejection operation after a tape without a small hole for metal tape detection is compulsively switched with a manual switch. CONSTITUTION:A metal tape detecting switch 1 is closed by loading of a metal tape. A chromium tape detecting switch 2 is closed by loading of a chromium tape. A manual switch 3 is provided for a metal tape without a small hole for type of tape detection and normally opened. in using a metal tape without a small hole for tape type detection, the switch 3 is depressed to be closed, and an FF consisting of NAND gates 5 and 6 is set, allowing to output a metal tape detection signal to an output terminl O1 and the operating conditions are set. When the use of the said tape is finished and ejected, the switches 1 and 2 are opened, the output of a NAND gate 4 goes to L, the FF is reset and automatic release can be made.</p> |
