| 摘要 |
<p>PURPOSE:To prevent a damage due to the fact that a cassette tape and a head contact with each other, by detecting respectively a state that there is no cassette tape, a state that the cassette tape is in slightly floating state, and a state that the cassette tape is installed correctly. CONSTITUTION:A copper foil part 32 fixed to a holding lever 23 is connected to a mechanism control part 34 through a copper wire 33. The copper foil part 32 conducts to a leaf switch 35 fixed to a lower substrate 27, when a cassette tape 21 is installed correctly. In case of a state that the cassette tape 21 is in slightly floating state, or a state that there is no cassette tape, the leaf switch 35 and the copper foil part 32 are not conducted. According to said execution example, a state that there is no cassette tape 21, a state that the cassette tape 21 is in slightly floating state, and a state that the cassette tape 21 is installed correctly are detected, respectively, and transferred to the mechanism control part 34, by which a force for pushing up the cassette tape 21 is not received, by preventing the cassette tape 21 and a head from being brought into contact with each other and being damaged.</p> |
