Image forming apparatus and fixing device

Details Image forming apparatus and fixing device Image forming apparatus and fixing device

1991-06-06

1992-10-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355284, G03G 1520

Patent

active

051593947

ABSTRACT:
An image forming apparatus for forming a toner image on a recording material applies a bias voltage having the same polarity as the toner to a core bar of a fixing roller. A fixing entrance guide is provided so that the recording material approaches or contacts the fixing roller when the recording material enters a contact-pressure region formed by the fixing roller and a pressing roller. Thus, offset of toner to the fixing roller is prevented.

REFERENCES:
patent: 4596920 (1986-06-01), Inagaki
patent: 4829931 (1989-05-01), Mogi
patent: 4935785 (1990-06-01), Wildi et al.

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