| 摘要 |
<p>There is provided a tube core for a stencil sheet roll, and holders fitted to the tube core, which are simple in construction and low in cost, and capable of preventing the roll from being erroneously mounted in an irrelevant machine without fail. The tube core for the stencil sheet roll (R) has two ends in which the holders (H, H'') are installed. The holders have a guide plate (21) and a projection (22, 23) projecting therefrom. The tube core has openings (14, 16) at the ends into which the projections (22,23) are inserted. The openings are different in inner dimension from each other such that the projections different in dimension from each other are fitted therein respectively. The tube core is formed of a first tube (11). The end opening (14) of the tube core is formed by one of the openings of the first tube (11), while the other opening (16) of the tube core is equal to an opening (16) of a second tube (15) which is nested in the first tube at a location neighboring to the other end opening of the tube (11). The tube (15) may be internally spaced a predetermined distance away from the end of the tube (11), to form a step portion (17), and the holder (H'') may have a shoulder portion (24) so as to be housed in the step portion. <IMAGE></p> |
