ELECTROSTATOGRAPHIC IMAGING APPARATUS INCLUDING MENAS FOR DETECTING THE DENSITY OF APPLICATION OF TONER PARTICLES

摘要

1439527 Developing electrostatic images XEROX CORP 4 Oct 1973 [6 Oct 1972] 46320/73 Heading G2H A measure of the deposition of toner particles on photo-conductive surface 12 is obtained by measuring the transmission of light through a transparent electrode 42, by means of a photosensor 46 which is associated with a light-pipe 48 and kept at a constant temperature by a surrounding heating apparatus 50.