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4.2.3 Cassette housing operation outline
(1) Inserted cassette type detection
In its initial state, the reel disk is in the standard position, and only when a mini cassette is inserted it changes to the mini cassette
position. As explained in Section 2, it is the reel change plate (Fig. 4.2.5) that changes the position of the reel disk.
As previously compared in 4.2.1, the thickness of standard and mini cassettes differ.
Standard cassette thickness : 14.6 mm
Mini cassette thickness
Based on this difference, it is differentiated within the cassette housing whether the inserted cassette is standard or mini.
1) When a mini cassette is inserted
The reel disk position changes to the mini cassette position at the same time the cassette housing performs the intake move-
ment.
The reel change bracket (Fig. 4.2.3) located on the right side of the cassette housing is linked to the reel change plate (Fig.
4.2.4), so when the cassette housing intake movement occurs the reel change plate also moves, thereby changing to the mini
cassette position.
Cassette Holder Bar
Fig. 4.2.2 Cassette Holder Bar
2) When a standard cassette is inserted
The cassette holder bar (Fig. 4.2.2) is pushed up for the amount
of thickness differential in relation to mini cassette, and in con-
junction the reel change bracket (Fig. 4.2.3) located on the right
side of the cassette housing moves upward. As a result, the link
with the reel change plate (Fig. 4.2.4) becomes free, and the reel
disk becomes held in the standard position even while the cas-
sette housing is undergoing the intake movement.
4-2
: 12.2 mm
Cassette Holder Bar
Reel Change Bracket
Fig. 4.2.3 Reel Change Bracket
Reel Change Plate
Fig. 4.2.4 Reel Change Plate
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