Wenderoth, Lind & Ponack, L.L.P.
Disk loading device and disk cartridge
 To present a disk loading device reduced in the thickness of the entire device, capable of loading plural types of cartridge and bare disk commonly, easy to handle in horizontal or vertical position, and particularly excellent in dust-proof performance or manual insertion and discharge performance of tray in power off state, a holder 100 moved back and forth by transfer means provided inside includes a detecting switch 114 of a shutter opener 103 and a detecting switch 115 of a disk holder 104, and these two detecting switches are combined, while a dust-proof member such as dust-proof cover 42 is provided in a passage to the disk and optical head 7 in an external air stream in the device, and therefore, immediately after putting the media into the holder 100, the type and state of the media can be detected, and breakage of device due to insertion of plural types of cartridge in wrong direction or wrong side can be prevented, and also contamination of the disk or optical head 7 by suction of dust or smoke can be also prevented. Moreover, the worm gear provided in a drive gear train 112 of the holder 100 is designed to exclude the axial force in the opposite direction of the loading motor 111, and meshing with the wheel 112 can be freely cleared, and therefore the loaded media can be easily discharged and taken out in power off state. 
Matsushita Electric Industrial Co., Ltd.
G
G11B
inventional
Yoshiaki Shinichi Akira Makoto Kozo Yasuhisa Yoshiyuki
Nakatsuka Maeda Kurozuka Fujita Ezawa Fukushima Hashimoto