are pivoted about the hinge portion 103 toward each other and closely put on each other. With this, the catching portion 109 becomes engaged with the caught portion 110 to latch the two lid portions 106 and 107, that is, the cartridge holder 101 at the closed condition.
In order to open the cartridge holder 101 and remove the three cartridges 201A, 201B and 201C therefrom, the following manual work is usually needed. First, a certain force is applied to the catching portion 109 with a thumb to release the latched engagement between the catching and caught portions 109 and 110. Then, the two lid portions 106 and 107 are pivoted in their open directions as seen from FIG. 54. Then, the center cartridge 201B is pull out fromthe two aligned grooves of the parallel ridges 102a and 102b, and then, as is seen from FIG. 53, the inside side edge of the cartridge 201A or 201C is raised from the inner surface of the lid portion 106 or 107 to disengage from the third and fourth engaging stubs 108c and 108d (or, 112c and 112d) and pulled out from the gripping gaps defined by the first and second engaging lugs 108a and 108b (or, 112a and 112b).
However, due to the inherent construction, the abovementioned conventional cartridge holder 101 has the following drawbacks.
First, the manual work for removing the cartridges 201A and 201C from the cartridge receiving areas of the lid portions 106 and 107 is difficult or at least troublesome. That is, although the first