METHOD OF COMPOSING HALF-TONE PICTURES BY MEANS OF ELECTRONIC PHOTOTYPE SETTERS

摘要

Method and apparatus for composing continuous tone pictures by means of electronic phototype setters wherein characters to be reproduced are manually or photographically produced and scanned electro-optically and then stored in binary coded form into a memory. The characters are read from the memory based on a program and continuous tone pictures are composed for relief printing and offset printing by using a finite number of raster fields of different forms and which may be combined to produce a desired image for printing.