| 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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