| 摘要 |
<p>A positioning sheet is used as a pattern for the exact mounting of film for the manufacture of printing plates for office offset machines. The existing variety of systems for register punching of the printing plates in the office offset sector makes an exact mounting of the printing format on the printing plate via the positioning sheet extremely difficult. In order to guarantee this in all cases, the positioning sheet has a quantity of different register punchings 5,6,7 from the different register punching systems common on the market on the right and left side of its front sheet edge. <IMAGE></p> |
