Patent ID: 9304461
Filing Date: 2016-04-05
CPC Classification: B05D,G03G

Claim Text:
1. A method for manufacturing a pressure rotating member of a thermal fixing apparatus, the pressure rotating member comprising: a substrate; and an elastic layer on the substrate, wherein the elastic layer has a void and a needle-shaped filler oriented along a longitudinal direction of the substrate, the method comprising steps of: (1) (i) providing an emulsion liquid composition for forming the elastic layer, the emulsion liquid composition comprising an uncrosslinked rubber, the needle-shaped filler, and a water-containing gel, wherein the water-containing gel is dispersed in the emulsion liquid composition, and (ii) forming a layer of the emulsion liquid composition on the substrate by flowing the emulsion liquid composition in the longitudinal direction of the substrate to orient the needle-shaped filler along the longitudinal direction of the substrate; (2) cross-linking the uncrosslinked rubber in the layer of the emulsion liquid composition so that water in the water-containing gel dispersed in the layer of the emulsion liquid composition is kept in the layer of the emulsion liquid composition; and (3) after the step (2), evaporating the water dispersed in the layer of the emulsion liquid composition to form the elastic layer having the void therein.