| 摘要 |
A miniaturized rolled-paper holding mechanism (10) which is capable of detecting the residual quantity of rolled-paper in both horizontally and vertically installed states of a printer. The rolled-paper holding mechanism (10) includes a rolled-paper holder (21), a holder cover (41), a positioning member (51), and a residual-paper-quantity sensor (61). The positioning member (51) is structured such that, as the holder cover ( 41 ) is opened or closed, the inclination angle of the positioning member (51) is varied with respect to a second-bottom-portion inclined surface (29) formed in the rolled-paper holder (21). Further, a second positioning groove (31)-which, when the holder cover (41) is closed, can be contacted with rolled-paper R having a given diameter-is formed between the positioning member (51) and the second-bottom-portion inclined surface (29) of the rolled-paper holder (21).
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