| 摘要 |
<p>The present invention provides a printer-machine-plate manufacturing device which facilitates manufacture of a cylindrical printer machine plate. A machine-plate manufacturing device is adapted to manufacture a machine plate 2 which has a cylindrical machine-plate body 17 formed by superposing and joining together opposite end portions of a sheet 19 of a magnetic material, an engagement portion 21 formed on the inner side of a joint portion 20, and a forme area 18 provided on the outer circumferential surface of the machine-plate body 17. The machine-plate manufacturing device 30 includes a cylinder section 32 having an outer circumferential portion around which the sheet 19 is wound. A groove 40 into which the engagement portion 21 of the sheet 19 is removably inserted from its distal end is formed in the outer circumferential portion of the cylinder section 32. On the inner side of the outer circumferential portion of the cylinder section 32, magnetic attraction members 51 formed of a magnetic material are provided, and permanent magnets 53 are provided in such a manner that their positions can be switched. Permanent-magnet switching means is provided in order to switch the positions of the permanent magnets 53 between a magnetization position for magnetizing the magnetic attraction members 51 and a demagnetization position for demagnetizing the magnetic attraction members 51.</p> |
