Developing apparatus

Details Developing apparatus Developing apparatus

1994-03-03

1996-07-09

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355214, 355245, 355251, G03B 2100, G03B 1506

Patent

active

055349820

ABSTRACT:
A developing apparatus includes a developer carrying member for opposing to an image bearing member bearing an electrostatic image, and for carrying a developer to develop the electrostatic image on the image bearing member, the developer having a polarity which is the same as a charging polarity of the image bearing member, and a bias voltage source for applying an oscillating bias voltage to the developer carrying member. The bias voltage oscillates interposing an image portion potential of the image bearing member, and an absolute value of a peak level of a background portion side potential is smaller than an absolute value of a background portion potential.

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