ELECTROPHOTOGRAPHIC PRINTING SYSTEMS

摘要

1408406 Electrographic printing XEROX CORP 23 Oct 1972 [27 Jan 1972] 48705/72 Heading G2H Images selected from certain ones only of a stack of cards 1 are placed end to end on a copy web 9 by means of an electro-photographic printing machine which forms latent images only from cards identified by data carried on them, developes the images and transfers them to the copy web. Each card 1 bears marks identifying its content. When a card is identified by scanning means 50A-50C and associated circuitry the matter contained in it is projected on a constantly-rotating photo-sensitive drum 20 as the cards pass in succession to tray 49. Further control circuitry makes certain that the developed images are transfered without gaps to the web 9.