Abstract:
An image producing process of a document copier is controlled by means detecting a low average intensity of reflected light during initial stages of scan of an original being copied to produce a low density or light copy adjacent the leading edge of the copy sheet passing through the machine thereby minimizing paper feed difficulties associated with the passage of copy having a dense leading edge through a contact fuser.
Abstract:
AN ELECTROPHOTOGRAPHIC DEVELOPMENT CARRIER COMPRISING CORE PARTICLES COATED WITH A CARBOXYLATED POLYETHYLENE IONOMER. WHEN UTILIZED WITH APPROPRIATE ELECTROSCOPIC TONER MATERIALS, AND CARRIER, WITH IS COATED WITH A CARBOXYLATED POLYETHYLENE IONOMER IS EFFECTIVE IN PRODUCING A DESIRED POLARITY AND MAGNITUDE OF THE TRIBOELECTRIC CHARGE ON THE TONER PARTICLES. CONTROL OF THE POLARITY AND MAGNITUDE OF THE TRIBOELECTRIC CHARGE CHARACTERISTIC OF THE CARRIER, WHICH HAS ITS PARTICLES COATED WITH THE CARBOXYLATED POLYETHYLENE IONOMER IS OBTAINED BY CONTROLLING THE CURING TEMPERATURE OF THE CARBOXYLATED POLYETHLENE IONOMER.