Optimising reproduction of master copy of image

摘要

The master is opto-electrically sampled. The sample signals are used to raster the master electrically and a display carrier is marked out such that a raster field on the display carrier is allocated to one or more sample signals of the master. Each raster field comprises several elementary cells (11). The relative positioning of the elementary cells is such that the overlap between a marked out cell and a neighbouring unmarked cell is minimal