Abstract A disk cartridge accommodating a disk-type recording medium (1c) and adapted to be used on a recording/read-out apparatus having at least an upper head and a lower head for making access to the upper and lower surfaces of the disk. The disk cartridge comprises an upper case member (1a) and a lower case member (1b) which are assembled together to form a case defining therein an internal space for accommodating the disk. Head windows (2a, 2b) formed in the upper and lower case members such as to oppose to each other so as to allow the heads to make access to the disk therethrough, the head windows extending in a predetermined radial direction of the disk. A recess formed by recessing the surface of each case member at a region extending between one longitudinal end of the head window and the edge of the case member closest to the longitudinal end of the head window. A shutter (3) capable of sliding on the case in the widthwise direction of the head windows so as to open/close the recesses and the head windows. The head window formed in the upper case member and the head window formed in the lower case member has different widths. This disk cartridge enables the shutter to be stably supported on the case, and reduces the risk for the disk to be contaminated by foreign matters.
A disk cartridge accommodating a disk-type recording medium and adapted to be used on a recording/read-out apparatus having at least an upper head and a lower head for making access to upper and lower surfaces of said disk, said disk cartridge comprising: an upper case member and a lower case member which are assembled together to form a case defining therein an internal space for accommodating said disk; said upper and lower case members having head windows therein such as to oppose to each other so as to allow said heads to make access to said disk therethrough, said head windows extending in a predetermined radial direction of said disk, and each of said case members having a recess in a surface thereof at a region extending between one longitudinal end of said head window and an edge of said case member closest to said longitudinal end of said head window; and a shutter capable of sliding on said case in the widthwise direction of said head windows so as to open/close said recesses and said head windows; wherein said head window formed in said upper case member and said head window formed in said lower case member has different widths.
Claim 2
Dependent Claim
201 words
A disk cartridge accommodating a disk-type recording medium and adapted to be used on a recording/read-out apparatus having at least an upper head and a lower head for making access to upper and lower surfaces of said disk, said disk cartridge comprising: an upper case member and a lower case member which are assembled together to form a case defining therein an internal space for accommodating said disk; said upper and lower case members having head windows therein such as to oppose to each other so as to allow said heads to make access to said disk therethrough, said head windows extending in a predetermined radial direction of said disk, and each of said case members having a recess in a surface thereof at a region extending between one longitudinal end of said head window and an edge of said case member closest to said longitudinal end of said head window; and a shutter capable of sliding on said case in the widthwise direction of said head windows so as to open/close said recesses and said head windows; wherein said head window formed in said upper case member and said head window formed in said lower case member has different widths.
Claim 3
Dependent Claim
70 words
A disk cartridge according to Claim 1, wherein said disk is a magneto-optical disk and said recording/read-out apparatus is a magneto-optical recording/read-out apparatus, said head window of the smaller width being adapted to be disposed on the same side as the optical head of said apparatus while said head window of the greater width is adapted to be positioned on the same side as the magnetic head of said apparatus.
Claim 4
Dependent Claim
26 words
A disk cartridge according to Claim 1, wherein only one of said upper case member and the lower case member has an opening for a spindle.
Claim 5
Dependent Claim
47 words
A disk cartridge according to Claim 1, wherein the case member having the head window of the smaller width has shutter guide grooves for guiding said shutter along both sides of said recess therein, such as to extend in parallel with the sides of said case member.
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