Fluorine-containing resin-coated pressure roller and heat-fixing device

摘要

A fluorine-containing resin-coated pressure roller exhibiting excellent anti-toner soiling characteristic even at low roller temperatures is provided. The pressure roller includes a cylindrical metal substrate, and a rubber elastic layer, an adhesive layer and a fluorine-containing resin release layer disposed in this order on and successively coating the cylindrical metal substrate. The pressure roller has a surface exhibiting a micro-rubber hardness of at most 50 deg., a contact angle with water of at least 105 deg. and a ten point-average surface roughness Rz of at most 3.0 mum. The pressure roller may be suitably combined with a fixing film to provide a film heating-type fixing device suitably used in an electrophotographic image forming apparatus.