| 摘要 |
PURPOSE:To enable releasing from pressing of a center core by a cassette pressing member after completion of pressing operation of an upper cover, and reduce torque that rotates a magnetic sheet by providing an elastic clicking mechanism. CONSTITUTION:Pressing force is applied to the upper cover 12. Before the upper cover 12 is fully lowered, a pressing spring 39 comes into contact with the center core 102, and the center core 102 is pressed in a spindle 28 by the elastic force and elastic force of a spring 37 that presses a steel ball 38 in a hole 35a. When the center core 102 arrives at a socket 28a, a cassette pressing plate 31 moves to the upper cover 12 side against the force of the spring 37 and the steel ball 38 energizes the cassette pressing plate 31 to the upper cover 12 side while getting out from the hole 35a and moving to a hole 35b side. Thus, the pressing plate 31 is released from pressing to the center core 102, and the pressing spring 39 and center core 102 are separated. |
