Accomodating case for disc cartridge

Details Accomodating case for disc cartridge Accomodating case for disc cartridge

1997-11-12

1999-08-03

Gehman, Bryon P.

Special receptacle or package

For holding a machine readable recording medium

For holding a housed computer disk

2064595, B65D 8557

Patent

active

059312963

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field
This invention relates to an accommodating case adapted for accommodating a disc cartridge within which a disc-shaped recording medium such as optical disc or magneto-optical disc, etc. is accommodated.
2. Background Art
Hitherto, as a recording medium for information signals, disc-shaped recording media such as optical disc or magneto-optical disc, etc. have been used. In the case of disc-shaped recording media of this kind, there is the possibility that when dust is attached to the signal recording surface or such signal recording surface is damaged or injured, etc., missing of recording/reproduction signal may be caused to take place at the time of recording/reproduction of information signals. In view of the above, at the time of storage, etc. when such disc-shaped recording media are not loaded with respect to the recording and/or reproducing apparatus (hereinafter referred to as recording and/or reproduction unit as occasion may demand), such recording media are accommodated within respective disc cartridges in order to prevent that dust is attached thereto, or they are damaged, etc.
As a disc cartridge within which a magneto-optical disc which is a disc-shaped recording medium is accommodated, a disc cartridge constituted as shown in FIG. 1 is known.
It is to be noted that the optical disc of reproduction (playback) only type and the magneto-optical disc which permits re-recording of information signals will be generically named or called "optical disc" as described below.
This disc cartridge 100 includes, as shown in FIG. 1, a cartridge body 103 formed by butt-joining a pair of upper and lower halves 101 and 102 in a rectangular form, and is adapted so that an optical disc 109 is rotatably accommodated within the cartridge body 103.
At the cartridge body 103, a disc accommodating portion is formed by a circular-arc shaped rising wall having a diameter (inside dimension) slightly greater than the outer diameter of optical disc accommodated therewithin and (having height dimension) caused to be slightly greater than the thickness dimension of the optical disc. The optical disc 109 is rotatably accommodated through the disc accommodating portion.
Moreover, at the cartridge body 103, there are opened opening portions for recording and/or reproduction in a manner positioned substantially at the central portion in left and right directions extending from the central portion toward the front side at the upper and lower surfaces. The optical disc 109 accommodated within the cartridge body 103 is adapted so that a portion of the signal recording area is faced toward the external of the cartridge body 103 extending in the radial direction through the opening portions.
Further, at the cartridge body 103, a shutter member 104 for opening/closing the opening portions for recording and/or reproduction is attached so that it can be moved. This shutter member 104 is composed of a pair of shutter portions 105 having sizes (dimensions) sufficient to close the opening portions for recording and/or reproduction, and a connecting portion 106 for connecting these shutter portions 105. Thus, the shutter member 104 is formed so as to take substantially channel shape in cross section as a whole. The shutter member 104 is adapted so that when the disc cartridge 100 is loaded with respect to the recording and/or reproduction unit, the shutter member 104 is caused to undergo movement operation by the shutter movement operation member provided at the recording and/or reproduction unit side to open the opening portions for recording and/or reproduction, while at the non-use time such as storage, etc. when the disc cartridge 100 is not loaded with respect to the recording and/or reproduction unit, the shutter member 104 is held at the position where it closes the opening portions for recording and/or reproduction.
In the above-described disc cartridge 100, since the opening portions for recording and/or reproduction are closed by the shutter member 104 at the non-use time when the disc cartridge 1

REFERENCES:
patent: 5226537 (1993-07-01), Ozeki
patent: 5385235 (1995-01-01), Ikebe et al.
patent: 5531322 (1996-07-01), Iwaki et al.
patent: 5645165 (1997-07-01), Taniyama

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