Disc cartridge

Details Disc cartridge Disc cartridge

2005-09-20

2005-09-20

Chen, Tianjie (Department: 2652)

Dynamic optical information storage or retrieval

Optical storage medium structure

Disk cartridge

Reexamination Certificate

active

06948181

ABSTRACT:
A disc cartridge includes a shutter unit having an outer shutter and inner shutters to open and shut apertures on the disc cartridge. The outer shutter opens one of the inner shutters corresponding to a side of the disc cartridge being accessed by a pickup. Accordingly, the overall area of the apertures exposed to the exterior during information recording and reproducing operations is reduced. Accordingly, dust is less likely to enter into the disc cartridge.

REFERENCES:
patent: 4991048 (1991-02-01), Ikebe et al.
patent: 5671212 (1997-09-01), Miyazaki et al.
patent: 5889639 (1999-03-01), Swanson et al.
patent: 6243355 (2001-06-01), Ikebe et al.
patent: 6407981 (2002-06-01), Cho et al.
patent: 6430147 (2002-08-01), Goto et al.
patent: 5-342795 (1993-12-01), None
patent: 10-64221 (1998-03-01), None
patent: 2000-30398 (2000-01-01), None
First Office Action from Chinese patent office.

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