Electrophotography – Image formation – Development
Patent
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.
Endoh Shuichi
Hosokawa Hiroshi
Komatsubara Satoru
Matsumae Iwao
Murakami Eisaku
Brase Sandra L.
Ricoh & Company, Ltd.
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