| 摘要 |
A METHOD AND DEVICE FOR REGULATING THE WATER-INK EQUILIBRIUM ON AN OFFSET PLATE OF AN OFFSET MACHINE A method for controlling the water-ink equilibrium in an offset machine including an offset plate (2) fixed on a cylinder (1) comprises the steps of: illuminating under normal incidence, with a coherent light source (30), a predetermined area (35) of the offset plate (2) in motion, the density of which is known; collecting in the focal plane of a convergent lens (32) a portion of the light reemitted around an axis perpendicular to the plane of the illuminated area (35); and measuring the light intensity in at least one area of the focal plane.
|
