Image heating apparatus

Details Image heating apparatus Image heating apparatus

2011-08-23

2011-08-23

Porta, David P (Department: 2884)

Electrophotography

Image formation

Fixing

C219S216000

Reexamination Certificate

active

08005414

ABSTRACT:
An image bearing apparatus includes an image heating belt heating a toner image on a sheet in a nip; a roller, opposing the belt, and forming the nip between the belt and itself; a pad, sandwiching the belt between the roller and itself, and pressing the belt toward the roller in the nip; a device pressing at least one of the pad and the roller so that the belt is pressed between the pad and the roller in the nip; and a device changing a pressure in the nip by the pressing device. The pad has a thickness, at its longitudinal central portion, larger than that at its longitudinal end portions. The pad has two curved surfaces, each being curved toward the opposing roller so that the longitudinal central portion of the pad is closer to the opposing roller than the longitudinal end portions of the pad.

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patent: 2005/0185996 (2005-08-01), Oishi et al.
patent: 2006/0198671 (2006-09-01), Kawahata
patent: 2007/0278203 (2007-12-01), Creteau et al.
patent: 2-157878 (1990-06-01), None
patent: 4-044075 (1992-02-01), None
patent: 4-204980 (1992-07-01), None

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