Method and apparatus for reducing sheet material curl...

Details Method and apparatus for reducing sheet material curl... Method and apparatus for reducing sheet material curl...

2007-08-07

2007-08-07

Chen, Sophia S. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C219S216000, C399S044000, C399S069000, C399S341000, C430S124300

Reexamination Certificate

active

11143402

ABSTRACT:
A fuser assembly within an image forming apparatus having a paper path along which substrates travel through the image forming apparatus including a heating member and a backup member cooperating with the heating member to form a nip therebetween for fusing images onto substrates passing through the nip. Also provided is structure for conveying substrates along the paper path to the nip, and a processor. The processor determines a relative humidity, determines if the relative humidity is above a predefined value corresponding to undesirable substrate curl; sets an interpage gap between conveyed substrates to a nominal value if the relative humidity is below the predefined value; and determines if the interpage gap should be increased beyond the nominal value if the relative humidity is above the predefined value. A corresponding method is provided.

REFERENCES:
patent: 5697015 (1997-12-01), Ream et al.
patent: 6681094 (2004-01-01), Horrall et al.
patent: 6823150 (2004-11-01), Cao et al.
patent: 6947679 (2005-09-01), Kato et al.
patent: 2005/0095022 (2005-05-01), Fujisawa
patent: 2005/0265741 (2005-12-01), Otsuka
patent: 2002-169416 (2002-06-01), None

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