Image forming apparatus

Details Image forming apparatus Image forming apparatus

1996-04-15

1997-04-22

Smith, Matthew S.

Electrophotography

Image formation

Transfer

428212, 430126, 399 44, 399 59, 399 66, G03G 1516

Patent

active

056233302

ABSTRACT:
In an image forming apparatus, a toner image is formed on an image carrier and the toner image thus formed is transferred onto a transfer material. The image forming apparatus solves troublesome matters of image quality and a transfer material conveying quality due to temperature and/or humidity variations without employing a separate temperature/humidity sensor. The transfer conveying belt includes at least two layers which are, a first layer having a surface resistance rate of 1-10.sup.10 .about.1-10.sup.16 and a second layer having a surface resistance rate of 1-10.sup.7 .about.1-10.sup.11, and the second layer is constructed with a rubber material having a temperature/humidity variation of electric resistance which is larger than a temperature/humidity variation of electric resistance of the first layer. Such a transfer conveying belt itself is then used as a temperature/humidity sensor.

REFERENCES:
patent: 4407580 (1983-10-01), Hashimoto et al.
patent: 5172173 (1992-12-01), Goto et al.
patent: 5231452 (1993-07-01), Murayama et al.
patent: 5390012 (1995-02-01), Miyashiro et al.
patent: 5461461 (1995-10-01), Harasawa et al.
patent: 5557384 (1996-09-01), Takano et al.

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