Special receptacle or package – For holding a machine readable recording medium – For holding an optical disc
Reexamination Certificate
2000-05-26
2001-10-02
Foster, Jim (Department: 3728)
Special receptacle or package
For holding a machine readable recording medium
For holding an optical disc
C206S308300, C360S133000, C369S291100
Reexamination Certificate
active
06296115
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a case for containing disk type recording medium, in particular, an optical disk, an optical magnetic disk or the like which is employed in an information recording apparatus such as a data filing apparatus and an image filing apparatus, etc.
2. Description of the Related Art
When the disk type recording medium such as the magnetic disk, optical disk, or optical magnetic disk is loaded into an information recording apparatus, such as a player for playing back information recorded in the disk or a recorder for writing information on the disk, the disk type recording medium has been conventionally loaded manually or loaded together with an exclusive case.
In case where the disk type recording medium is manually loaded into the information recording apparatus, a surface of the disk type recording medium is likely to be damaged with dusts, scratches, fingerprints, etc. These dusts, scratches or fingerprints will sometimes deteriorate reliability of the disk type recording medium in the event of recording and reproducing the information, particularly in recording the information, and as a result, a desired information may not be recorded. In case of recording information especially in the disk type recording medium having a high recording density such as a digital versatile disk (hereinafter referred to as DVD), there has been a fear that a desired information may not be accurately recorded.
Under such situation, in order to prevent adhesion of dusts and the like on a surface of the disk type recording medium, there have been employed such cartridges
201
,
301
as shown in
FIGS. 5 and 6
which enable the disk type recording medium to be loaded into the information recording apparatus as they are encased in the cartridge.
A conventional cartridge
201
illustrated in
FIG. 5
comprises a cartridge body
203
of a synthetic resin or the like which contains the disk type recording medium such as a compact disk (hereinafter referred to as CD) or DVD, and a lid body
204
of a synthetic resin or the like. The cartridge body
203
is formed in a shape of a box which can contain the disk type recording medium and includes a cavity
207
for taking in and out the disk type recording medium, and an opening
205
into which a recording and reproducing head and a rotary table of the information recording apparatus are adapted to be inserted.
A shutter
206
for opening and closing the opening
205
is slidably attached to the cartridge body
203
. The shutter
206
is formed of a leaf metal or the like, and biased by a spring (not shown) in a direction of closing the opening
205
.
The lid body
204
is formed in a shape of a plate having such a size that it can cover the cavity
207
. One end of the lid body
204
is rotatably fixed to one end of the cartridge body
203
, while the other end of the lid body
204
is provided with a locking piece
209
which can be locked with the other end of the cartridge body
203
. In this manner the lid body
204
is fixed to the cartridge body
203
so that the cavity
207
can be opened and closed.
At the center of the lid body
204
, is attached a clamp
210
provided with magnetic plates
211
. The clamp
210
is inserted from outside into a circular opening
212
which is formed at the center of the lid body
204
. Around the circular opening
212
is formed a flange
208
for preventing the clamp
210
from dropping into the lid body
204
, that is, into the cartridge body
203
.
The clamp
210
is inserted into the opening
212
from the outside of the lid body
204
, and then, fixed to the lid body
204
by fitting a retaining plate
213
for covering the opening
212
to an outer face of the lid body
204
.
The clamp
210
thus interposed between the flange
208
and the retaining plate
213
is fitted to the lid body
204
with a backlash so that it may minutely move in a direction of departing from the disk type recording medium contained in the cartridge body
203
and along a surface of the disk type recording medium.
When the cartridge
201
of the structure as described above and illustrated in
FIG. 5
is loaded into the information recording apparatus with the disk type recording medium contained therein, the shutter
206
slidingly moves against a tension of the spring to open the opening
205
. Then, the rotary table of the information recording apparatus enters into the cartridge body
203
through the opening
205
.
On this occasion, a magnet fixed on the rotary table attracts the magnetic plates
211
of the clamp
210
, and the disk type recording medium is centered and mounted on the rotary table. In a state where the disk type recording medium is centered and mounted, the clamp
210
is held at such a position that it may neither contact with the flange
208
nor the retaining plate
213
. As the rotary table rotates, the disk type recording medium and the clamp
210
will rotate with the rotation of the rotary table to perform recording and reproduction of the desired information.
The cartridge
301
of the second conventional example illustrated in
FIG. 6
comprises a cartridge body
303
of a synthetic resin or the like which contains the disk type recording medium such as the CD or DVD, and a lid body
304
of a synthetic resin or the like. The body
303
is formed in a shape of a box which can contain the disk type recording medium and includes a cavity
307
for taking in and out the disk type recording medium, and an opening
305
into which a recording and playback head and the rotary table of the information recording apparatus are adapted to be inserted. Further, the lid body
303
is provided with locking holes
303
b
which serve as locking retainers, at its peripheral wall
303
a
positioned at one end thereof.
The lid body
304
is formed in a shape of a plate having such a size that it can cover the cavity
307
. One end of the lid body
304
is provided with locking projections
306
a
which are adapted to engage with the locking holes
303
b
, while the other end of the lid body
304
is provided with a locking piece
306
b
which can be locked with a peripheral wall
303
c
facing with the peripheral wall
303
a
of the body
303
. In this manner the lid body
304
is fixed to the cartridge body
303
by an engagement of the locking projections
306
a
with the locking holes
303
b
and an engagement of the locking piece
306
b
with the peripheral wall
303
c
, so that the cavity
307
can be opened and closed.
At the center of the lid body
304
, is attached a clamp
310
provided with magnetic plates
311
. The clamp
310
is inserted from outside into a circular opening
312
which is formed at the center of the lid body
304
. Around the circular opening
312
is formed a flange
308
for preventing the clamp
310
from dropping into the lid body
304
, that is, into the cartridge body
303
.
The clamp
310
is inserted into the opening
312
from the outside of the lid body
304
, and then, fixed to the lid body
304
by fitting a retaining plate
313
for covering the opening
312
to an outer face of the lid body
304
.
The clamp
310
thus interposed between the flange
308
and the retaining plate
313
is fitted to the lid body
304
with a backlash so that it may minutely move in a direction of departing from the disk type recording medium contained in the cartridge body
303
and along a surface of the disk type recording medium.
When the cartridge
301
is carried or stored with the disk type recording medium contained therein, the cartridge
301
is encased in a protective case
314
in order to prevent dusts from entering through the opening
305
and adhering to the surface of the disk type recording medium.
The protective case
314
is formed of a synthetic resin or the like, and consists of a flat bottom wall
315
, a pair of side walls
316
,
316
provided in an upright form from opposite edges of the bottom wall
315
, and a rear wall
317
provided in an upright form from a rear edge of the bottom w
Kondo Toshiyasu
Kurosawa Masashi
Foster Jim
Pioneer Corporation
Sughrue Mion Zinn Macpeak & Seas, PLLC
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