Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Reexamination Certificate
1999-12-10
2002-05-28
Miller, Brian E. (Department: 2652)
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
C369S030410
Reexamination Certificate
active
06396656
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a wrong insertion prevention device for a cartridge type recording medium in a housing storage having a plurality of cells for housing a plurality of cartridge type recording media to be able to individually fetch them, and more particularly to a wrong insertion prevention device for a cartridge type recording medium suitable for a housing storage to be incorporated in a library device or the like for recording in and reproducing, an arbitrary cartridge type recording medium from among a plurality of cartridge type recording media.
2. Description of the Prior Art
Conventionally, in a library device for recording in and reproducing, among others, an arbitrary cartridge type recording medium from among a plurality of cartridge type recording media, there is incorporated a housing storage for housing a plurality of cartridge type recording media to be able to fetch them. This housing storage has a cell main body comprising a plurality of cells for housing cartridge type recording media respectively, and each unit cell is provided with a wrong insertion prevention device for a cartridge type recording medium for preventing wrong insertion of the cartridge type recording medium into the cell.
As a wrong insertion prevention mechanism for a cartridge type recording medium of this type, there is one specified in, for example, Japanese Patent Laid-Open No. 8-180549.
The aforesaid wrong insertion prevention mechanism for a cartridge type recording medium is, as shown in, for example, FIGS.
9
(A) and (B), installed for each of a plurality of cells
52
provided within a cell main body
50
.
This mechanism will be further described in detail. In FIG.
9
(A) , the cell main body
50
is formed like a
-character in cross section, the lower part of which is opened, and is sequentially provided with a plurality of cell
52
areas in a direction perpendicular to the FIG.
9
(A) within. Each of these cells
52
is partitioned by partitioning shelves
53
provided on both side walls at positions close to an opening
52
a
formed on the lower side in FIG.
9
(A).
The wrong insertion prevention mechanism for a cartridge type recording medium installed within each cell
52
is configured by a pair of blade springs
51
A and
51
B installed on the both side wall portions of each cell
52
to oppose each other, and a deep partitioning member
54
provided on a deep inner surface (bottom surface) between each cell
52
. The aforesaid blade springs
51
A and
51
B are arranged within the cell
52
in a mutually opposed state, and an engaging projection
51
Aa or
51
Ba is provided at the tip end of the blade spring
51
A or
51
B respectively.
Thus, when a cartridge type recording medium
60
is inserted into the cell
52
from the opening
52
a
in an ordinary state (normal state), medium-side inclined portions
60
a
formed at the tip end portion of this cartridge type recording medium
60
on both sides are to be inserted not to abut against the engaging projections
51
Aa and
51
Ba of the blade springs
51
A and
51
B as shown in FIG.
9
(B), whereby the cartridge type recording medium
60
can be inserted to an appropriate housing position.
In contrast, when the cartridge type recording medium
60
is erroneously inserted with the front end thereof and the rear end reversed (that is, when the cartridge type recording medium
60
is inserted with its rear end turned toward the cell
52
side), its rear end bumps against the engaging projections
51
Aa and
51
Ba of the blade springs
51
A and
51
B halfway through the insertion of the cartridge type recording medium
60
as shown in
FIG. 10
to thereby inhibit it from being inserted to the appropriate position.
Also, when the cartridge type recording medium
60
is obliquely inserted into the cell
52
, the tip end thereof bumps against the deep partitioning member
54
halfway through the insertion as shown in FIG.
10
(B). This inhibits the cartridge type recording medium
60
from being inserted into the cell
52
. That is, when the cartridge type recording medium
60
is obliquely inserted with a difference in level, the insertion to the appropriate housing position within the cell
52
is inhibited.
Further, the conventional example shown in
FIG. 11
shows that there is provided, on the side of the opening of the aforesaid cell
52
, a door
55
, on the inside of the tip end portion of which there is provided a contacting member
55
a.
In this case, in a state in which the cartridge type recording medium
60
has normally been inserted into the unit cell
52
, the contacting member
55
a
of the door
55
is only brought into point-contact with the rear end portion of the cartridge type recording medium
60
as shown in
FIG. 11
, and the door
55
is completely closed.
In contrast, in the state in which the cartridge type recording medium
60
has been inserted into the cell
52
in the opposite direction, the contacting member
55
a
of the door
55
is brought into surface-contact with the tip end portion of the cartridge type recording medium
60
for abutting, and the door
55
is not completely closed. In this manner, the user can recognize the state in which the cartridge type recording medium
60
has been inserted into the cell
52
in the opposite direction.
However, in the aforesaid wrong insertion prevention mechanism for a cartridge type recording medium according to the conventional example, the cartridge type recording medium
60
is inhibited from being inserted into the cell
52
in the reverse direction with the provision of the engaging projections
51
Aa and
51
Ba on the blade springs
51
A and
51
B. Therefore, when the cartridge type recording medium
60
is further forcibly pushed in a state in which the rear end of the cartridge type recording medium
60
has been bumped against the engaging projections
51
Aa and
51
Ba, the blade springs
51
A and
51
B may possibly become deformed to widen the interval between projection portions
51
Aa and
51
Ba of the blade springs
51
A and
51
B, thus possibly allowing the cartridge type recording medium
60
to be inserted to the appropriate housing position. As a result, there have arisen inconvenience that it cannot be completely prevented to insert the cartridge type recording medium
60
into each unit cell
52
to the appropriate housing position in the reverse direction.
Also, in case of the cell
52
having the door
55
, when the cartridge type recording medium
60
is further forcibly pushed in a state in which the rear end of the cartridge type recording medium
60
has been bumped against the engaging projections
51
Aa and
51
Ba, the contacting member
55
a
of the door
55
does not abut upon the tip end portion of the cartridge type recording medium
60
, but the door
55
will be completely closed, and there arises a case where the operator cannot recognize that the cartridge type recording medium
60
has been inserted in the reverse direction.
BRIEF SUMMARY OF THE INVENTION
Object of the Invention
By improving such inconveniences of the conventional example, it is an object of the present invention to provide a wrong insertion prevention device for a cartridge type recording medium particularly capable of reliably preventing a cartridge type recording medium from being inserted into each unit cell in the reverse direction.
SUMMARY OF THE INVENTION
In order to attain the above-described objects, there are provided: a wrong insertion detection means placed side by side with the cell main body for housing a plurality of cartridge type recording media, for detecting wrong insertion of any of the cartridge type recording media; and a door locking mechanism for operating on the basis of output information from this wrong insertion detection means to regulate a closing operation of the door for the housing case main body which has been opened during an insertion operation of the aforesaid recording medium.
Thus, there has been adopted a technique in which the aforesaid wro
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