| 摘要 |
<p>A knife holder 51a is secured to a spirally formed groove 51b of a knife rotor (thus far being called a top-rotor) with screws. A commercially available lengthy dual thin-edged knife 53 is secured to the knife holder 51a. A pressing member 52a is secured to a spirally formed groove 52b of a plane rotor (thus far being called a top-rotor) with screws in conjunction with a circumferential surface member 54. The knife rotor 51 and the plane rotor 52 are conjunctionally rotated to cut off a roller paper 55 by cooperating the dual-edged knife 53 and the circumferenctial-surface member 54 secured thereto. <IMAGE></p> |
