Dynamic information storage or retrieval – With particular cabinet structure – Slotted for edgewise insertion of storage disc
Reexamination Certificate
1997-05-23
2001-03-06
Davis, David (Department: 2754)
Dynamic information storage or retrieval
With particular cabinet structure
Slotted for edgewise insertion of storage disc
Reexamination Certificate
active
06198712
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an information recording and reproducing apparatus which prevents dust from entering into the internal mechanism, even if the stopping position of a tray for loading a recording medium into the apparatus is variable.
2. Description of the Related Art
In an information recording and reproducing apparatus, a recording/reproducing disc is put on an eject tray, after which it is loaded into the apparatus for a recording/reproducing operation.
For example, Japanese Patent Publication (KOKOKU) No. 5-47909 discloses an information recording and reproducing apparatus as shown in FIG.
12
. The apparatus has a tray port
104
provided at a front panel
102
of a housing
100
, a tray
106
which is ejected from the tray port
104
and is loaded into the apparatus, a motor for ejecting and loading the tray
106
(not shown), and a sensor for detecting a position of the tray
106
(also not shown).
When the motor is driven and the tray
106
containing a disc is loaded into the apparatus and reaches a predetermined position, the sensor detects it, and the loading is completed and the loading motor is stopped. Then, the action of recording or reproducing starts.
However, in the information recording and reproducing apparatus having the above mentioned structure, a stopping position of the tray
106
is variable because of the variation of a detecting position of the sensor and an attaching position error of relational parts. Accordingly, a distance between a cover
108
and a tray port
104
is changed, which may provide a clearance for the entrance of dust.
Since the apparatus has a lens moving mechanism for moving a lens, if dust enters the interior of the apparatus, there is problem that the lens actuator may not work properly.
FIG. 13
is a partially enlarged view showing the relation of the position between the cover
108
and the tray port
104
, when the tray
106
of
FIG. 12
is loaded.
The tray port
104
has step structure with an upper portion
104
a
and a step portion
104
b.
As the tray
106
can move smoothly in loading the tray
106
, an upper edge portion
108
a
of the tray
106
and the upper edge portion
104
a
of the tray portion
104
are provided to keep a distance L
1
between them.
In such a case, if the stopping position of the tray
106
is variable because of the above reason, a clearance shown as L
2
produced between a circumferential portion
108
b
of the tray
106
and the step portion
104
b
of the tray port
104
, and dust enters the interior of the apparatus.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide an information recording and reproducing apparatus which does not have a clearance between a cover and a tray port, and thus prevents dust from entering the apparatus from the outside, even if there is a variation of a detecting position of the sensor or an attaching position error of relational parts.
REFERENCES:
patent: 4653039 (1987-03-01), Ueno et al.
patent: 5265072 (1993-11-01), Numata et al.
patent: 3-61691 (1991-06-01), None
patent: 4-103391 (1992-09-01), None
patent: 4-115395 (1992-10-01), None
patent: 5-47909 (1993-07-01), None
patent: 5-73739 (1993-10-01), None
patent: 9-55005 (1997-02-01), None
patent: 10-503316 (1998-03-01), None
patent: WO 96/36966 (1996-11-01), None
Davis David
Dickstein , Shapiro, Morin & Oshinsky, LLP
Ricoh & Company, Ltd.
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