| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate the deterioration of the image quality of a printed image caused by the variation of a perforated state in the case that flatness is lowered due to waviness, or the displacement of a heating element occurs due to curvature. <P>SOLUTION: There is provided a pressuring control system for a platen roller 13 brought into press-contact with a thermal head 70 that has a plurality of heating elements 72 in a line, and makes the heating elements 72 generate heat in accordance with an image signal, and thereby making perforation for a stencil master to form a perforation pattern in accordance with the image signal. The pressuring control system includes: the platen roller 13 brought into press-contact with the heating elements 72 of the thermal head 70; an auxiliary roller 44 pressing the platen roller 13 against the thermal head 70 side; a variable pressuring mechanism 71 changing the pressing force of the auxiliary roller 44 to the platen roller 13 for each of areas A to C divided in a shaft direction of the platen roller 13; and a pressing controller 311a controlling the operation of the variable pressuring mechanism 71. <P>COPYRIGHT: (C)2013,JPO&INPIT |
