Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce multiple image on medium or plural radiant energy...
Patent
1977-09-07
1981-09-08
Martin, Jr., Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce multiple image on medium or plural radiant energy...
430 55, 355 14CH, G03G 1322, G03G 1324
Patent
active
042885140
ABSTRACT:
A photosensitive member is exposed to light prior to primary charging so that the surface potential applied by primary charging may always be maintained at a constant level to which the photosensitive member is always charged when it is repetitively used for some time, which may be predetermined by test. Until the surface potential reaches this level, the intensity of light for pre-exposure is gradually decreased and after the surface potential has reached this level, no pre-exposure is applied. But when the surface potential rises after a predeterminable period during which the photosensitive member is not used, the pre-exposure is applied again. All the copies may have the same density.
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Kusunoki Katsuo
Kutsuwada Noboru
Namiki Ryoichi
Saito Minoru
Canon Kabushiki Kaisha
Goodrow John L.
Martin Jr. Roland E.
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