Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1988-05-24
1989-11-21
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430120, 430 56, 430 58, 430 59, G03G 1322
Patent
active
048822574
ABSTRACT:
An electrophotographic device performing reversal development to develop the portion with lower absolute value of potential in an electrophotographic process having steps of primary charging, imagewise exposure, developing and cleaning, and having a photosensitive member of the lamination type which uses a layer coated with an organic pigment dispersed in a solvent or in a solvent and a polymer binder, as the charge generation layer, wherein the potential of the photosensitive member and process conditions are under constant conditions, said constant conditions being within the range as defined by the following formula of Vd, t and V.sub.H, when the surface potential of the photosensitive member immediately after charged with a primary charger is defined as Vd (V), the time from primary charging to toner development as t (sec) and further the surface potential of the photosensitive member at which the toner developing density becomes the half value of the saturated density as V.sub.H (V):
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Hashimoto Yuichi
Maruyama Akio
Sakakibara Teigo
Canon Kabushiki Kaisha
Lindeman Jeffrey A.
Michl Paul R.
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