| 摘要 |
<p>1365163 Facsimile apparatus 104/72 XEROX CORP 6 Dec 1971 [9 Dec 1970] 56523/71 Heading H4F [Also in Division G2] In a method of facsimile transmission, a transmitted video signal in the form of a modulated voltage having a field strength greater than 10 volts/micron is fed to a photoelectrophoretic printer in which a uniform field of 0À1-1 volt/ micron is applied between blocking and transparent injecting electrodes 10 and 1 (to produce uniform electrophoretic deposition on the injecting electrode) while a uniformly bright point of light scans the nip between the electrodes to produce a photoelectrophoretic image corresponding to the signal on the blocking electrode 10 or on a web 13 passing over electrode 10. In the latter case, the web may be fed to successive yellow, magenta and cyan printers fed respectively with signals corresponding to the red, green and blue components of an original. Before transmission the signals may be fed to a computer wherein they are modified to compensate for the non-ideal response of yellow, magenta and cyan pigments and for the non- ideal contrast characteristics of the photoelectrophoretic system.</p> |
