Electrophotography – Image formation – Fixing
Patent
1997-07-29
1998-08-04
Smith, Matthew S.
Electrophotography
Image formation
Fixing
399320, 219216, G03G 1520
Patent
active
057909318
ABSTRACT:
A heat-resistant sheet, which has slits formed therein, is provided between a fixing roller and a pressure member. The heat-resistant sheet, which has a thickness of 300 .mu.m, is coated with a synthetic resin material having superior toner-releasing and heat-resisting properties, or incorporates such a synthetic resin material inside thereof. Here, a recording material is transported between the fixing roller and the heat-resistant sheet. As the surface temperature of the fixing roller rises, the heat-resistant sheet starts expanding gradually, causing its surface to be warped. However, unless the temperature of the fixing roller exceeds a set temperature, the expansion of the heat-resistant sheet and its surface deflection are all absorbed by the slits, and the slit width becomes zero. Therefore, it is possible to keep an optimal nip width while maintaining a proper applied pressure of the pressure member, without the necessity of using a heat-releasing device or increase the thickness of the heat-resistant sheet. As a result, a superior fixing operation is available by using the heat-resistant sheet having the slits.
REFERENCES:
patent: 4822978 (1989-04-01), Morris et al.
patent: 5485259 (1996-01-01), Uehara et al.
patent: 5570171 (1996-10-01), Kusumoto et al.
patent: 5621512 (1997-04-01), Uehara et al.
patent: 5655202 (1997-08-01), Yoshimura et al.
patent: 5708947 (1998-01-01), Kagawa et al.
Azumi Shinichi
Kadoya Atsushi
Kagawa Toshiaki
Tsuji Masaru
Yamaji Kouji
Conlin David G.
Lowry David D.
Sharp Kabushiki Kaisha
Smith Matthew S.
LandOfFree
Fixing device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fixing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fixing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1190837