| 摘要 |
Register system for in-register alignment of a flexible printing plate on a plate cylinder of a rotary printing machine includes means defining at least two register punch-holes formed in the printing plate and register markings corresponding thereto formed in the plate cylinder, the printing plate having a lower surface towards the plate cylinder and the plate cylinder having a rotary axis, the register markings being at a radial distance from the axis of the plate cylinder at most equal to the radial distance of the lower surface of the printing plate thereform, the register markings comprising respective surface areas slightly smaller than and geometrically similar to a cross-sectional area of the register punch-holes and having an appearance contrasting with the surroundings thereof, the register markings, in clamped condition of the printing plate on the printing cylinder, being disposable in contact-free coincidence with the register punch-holes. |
