Dynamic magnetic information storage or retrieval – Record medium – In container
Reexamination Certificate
1999-11-02
2002-07-16
Miller, Brian E. (Department: 2652)
Dynamic magnetic information storage or retrieval
Record medium
In container
C369S291100
Reexamination Certificate
active
06421204
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a disk cartridge including a disk medium capable of recording or reproducing information, more particularly to a disk cartridge in which a door for opening or closing an opening portion for inserting a head thereto is formed as a rotating type one and the door is provided with a notch for passing a projected streak portion for determining opening of the door on the side of a disk drive only when the rotated door reaches a predetermined rotational angle whereby a wide opening portion is provided and the closed door and parts provided at inside of the disk drive can be prevented from colliding with each other.
Further, the present invention relates to a door opening and closing mechanism of a disk cartridge for opening and closing a door of the disk cartridge including a record medium in a disk-like shape, and a disk drive using thereof, more particularly to a door opening and closing mechanism of a disk cartridge in which a door can be opened and closed stably according to the opening of the door by engaging an engaging pin with a side face of the rotating type door of the disk cartridge and moving the engaging pin along a predetermined track in accordance with the advance of the disk cartridge, and a disk drive using thereof.
BACKGROUND ART
There is known a conventional disk cartridge for recording information as shown in, for example,
FIGS. 24A and 24B
. The disk cartridge
101
is an attachable and detachable cartridge (removable cartridge) containing a record medium in a disk-like shape having a large information capacity used in, for example, an information processing apparatus and
FIGS. 24A and 24B
show the removable hard disk.
As shown in
FIG. 25
, according to the conventional disk cartridge
101
, a cartridge upper shell
109
and a cartridge lower shell
108
are fastened by fixing screws
112
in a state where they overlap each other. There are contained, at inside thereof, a disk
102
having information recording faces on both upper and lower faces
102
a
and
102
b
thereof and a clamp member
103
attached to the center of the disk
102
. As base material of the disk
102
, aluminum or glass is generally used.
The clamp member
103
is constituted by a pair of upper and lower pinching plates
104
and
105
and a fixing screw
106
for fastening these. The two pinching plates
104
and
105
pinch the disk
102
from above and from below and are fastened by the fixing screw
106
whereby a surrounding of a center hole
107
of the disk
102
is pinched by the pinching plates
104
and
105
. The disk
102
is rotatably contained at inside of the disk cartridge
101
.
Further, one side face of the conventional disk cartridge
101
is provided with an opening portion
107
for allowing a recording or reproducing head to be inserted thereinto. There are provided a slide shutter
110
for closing the opening portion
107
to prevent dust and dirt from being entrapped when the disk cartridge
101
is not used, and a return spring
111
for automatically closing the opened slide shutter
110
.
When signals are recorded to or reproduced from the disk cartridge
101
, the disk cartridge
101
is mounted in a disk drive (not illustrated). At this occasion, the slide shutter
110
is slid against urging force of the return spring
111
and then the opening portion
107
is opened. When the disk cartridge
101
is mounted, the disk
102
is fixed to a shaft of a spindle motor of the disk drive by a magnet or the like and driven to rotate, and then a pair of recording/reproducing heads are inserted from the opening portion
107
and arranged opposedly to both upper and lower faces of the disk
102
so that recording or reproducing is carried out.
PROBLEMS IN BACKGROUND ART
However, according to the disk cartridge
101
having the slide shutter
110
shown in
FIG. 25
, there is a physical restriction in a width dimension of the opening portion
107
which emerges after the slide shutter
110
has finished sliding. That is, the slide shutter
110
is constituted so as to slide and to move at the side face of the disk cartridge
101
and therefore, a lateral width of the slide shutter
110
must be constituted to be equal to or smaller than ½ of a lateral width of the disk cartridge
101
and accordingly, the width of the opening portion
107
is equal to or smaller than ½ of the lateral width of the cartridge.
In this way, according to the conventional disk cartridge
101
, the width of the opening portion
107
cannot be set widely relative to the lateral width of the cartridge main body and therefore, it is not suitable for a drive apparatus having a pivoting type actuator in which a recording/reproducing head constitutes a movement locus in a fan-like shape as in a removable hard disk.
Further, in the case of the conventional disk cartridge
101
, when an abnormality is caused in a shutter opening and closing mechanism at inside of the apparatus and the disk cartridge
101
is inserted into the disk drive in a state in which the slide shutter
110
stays to be closed, the slide shutter
110
collides with main parts such as a lamp and a head arranged at inside of the apparatus and depending on cases, there is a fear of destruction of these parts and out of function thereof.
Further, when in the midst of inserting or in the midst of discharging the disk cartridge
101
, the shutter opening and closing mechanism on the side of the disk drive and the slide shutter
110
are inadvertently disengaged, there is a fear of a collision of the slide shutter
110
closed by the return spring
111
with a lamp or a head and an occurrence of destruction or the like.
OBJECT OF THE INVENTION
The present invention has resolved the above-described problems and proposes a disk cartridge capable of firmly providing a wide opening portion and capable of preventing a door of a disk cartridge and parts at inside of a disk drive from colliding with each other.
Further, the present invention proposes a door opening and closing mechanism of a disk cartridge capable of firmly providing a wide head insertion slot and capable of stably opening and closing a door of a disk cartridge, and a disk drive using thereof.
DISCLOSURE OF THE INVENTION
In order to resolve the above-described problems, according to an aspect of the invention, there is provided a disk cartridge comprising cartridge shells containing a disk medium and being mounted in a disk drive to record or reproduce signal, characterized in that the disk cartridge is provided with an opening portion for allowing a head for recording the signal on the disk cartridge medium or reproducing it from the disk cartridge medium to be inserted, and a rotating type door for opening or closing the opening portion, wherein the door is provided with a notch for permitting a projected streak portion for determining opening or closing of the door on a side of the disk drive to be entered therein only when the rotated door reaches a predetermined rotational angle.
In mounting the disk cartridge to the disk drive, when the door is properly rotated and the opening portion is opened, the projected streak portion on the side of the disk drive enters in the notch and the disk cartridge can be mounted. Further, a head and the like are inserted from the opening portion to inside of the cartridge so that the signal is recorded or reproduced.
In the meantime, in mounting the disk cartridge to the disk drive, when the door is not rotated and the opening portion is not opened by some cause, the door and the projected streak portion are brought into contact with each other and the disk cartridge cannot be inserted further.
Therefore, since the rotating type door is used in the present invention, in comparison with the case of using a slide shutter, the opening portion can be provided widely, which is preferable in a drive apparatus having a pivoting type actuator in which a recording/reproducing head constitutes a movement locus in a fan-like shape as in a removable hard disk.
Further, in mounting the d
Funawatari Takatsugu
Yamada Takashi
Chen Faye
Miller Brian E.
Ryan Matthew K.
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