Formation of fluororesin surface layer of fixing roller for electrophotographic copying machine and the like

Abstract

Abstract PURPOSE:To strengthen adhesion between an elastic layer and a surface layer and to improve dimensional accuracy by heat shrinking a shrinkage fluororesin pipe on a layer specified in compsn. formed on a silicone rubber elastic layer formed and fixed to the surface of a core metal to coat the layer with the shrinkable fluororesin layer. CONSTITUTION:A roller substrate 3 obtained by forming and fixing the elastic layer made of a silicone rubber on and to the core metal 1 is inserted into the fluororesin pipe 4, and heat treated from the outside to shrink the pipe 4 and to bond it to the surface of the elastic layer 2, thus forming the layer 4 on the roller substrate 3 in this process. A soln. of a polymer made of a silicone rubber or a fluororubber and a fluororesin in a ratio of 95:5-50:50 is dried to form a layer between the substrate 3 and the fluororesin layer 4 and heat treated. As a result, the fluororesin surface layer 4 as thin as few ten mum is formed on the layer 2 made of the silicone rubber, and yet, the fixing roller high in dimensional accuracy can be obtained, and the adhesion between the layer 2 and the surface layer 4 is strengthened.

Inventors

• 👤 Kesaaki Kitazawa
• 👤 北沢　今朝昭
• 👤 Ataru Hirayama
• 👤 平山　中

Bibliographic Details