Image forming apparatus with bias control to prevent undesirable

Details Image forming apparatus with bias control to prevent undesirable Image forming apparatus with bias control to prevent undesirable

1996-02-08

1998-06-16

Brase, Sandra L.

Electrophotography

Image formation

Development

399 55, G03G 1508

Patent

active

057686653

ABSTRACT:
In an image forming apparatus using a corona discharge type charging device and a contact type image transferring device, a toner deposited on a photoconductive element in the form of a black stripe is prevented from being transferred to the image transferring device; otherwise, the toner would be transferred from the image transferring device to the rear of the following recording medium. Because the toner forming the black stripe is limited to the toner charged to a polarity opposite to an expected polarity, toner consumption ascribable to the stripe is reduced.

REFERENCES:
patent: 5287149 (1994-02-01), Hoshika
patent: 5337127 (1994-08-01), Imaue
patent: 5341197 (1994-08-01), Folkins et al.
patent: 5404213 (1995-04-01), Okano et al.

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