HEATING FIXING ROLLER OF ELECTROPHOTOGRAPHIC COPYING MACHINE OR THE LIKE

摘要

PURPOSE:To reduce a wear caused by a slide against an inner ring of a bearing, and also to prevent a deformation caused by a collision to other machine parts by performing a surface treatment of an anodic oxidizing method, etc. to the surface of a bearing use journal part, making an Al2O3 film, and increasing the hardness. CONSTITUTION:Before entering into a process for coating a parting agent such as ''Teflon'', etc. to the surface of a paper running part 2, a film 5 of an Al2O3 layer is formed by performing a surface treatment of an anodic oxidizing method, etc. to bearing use journal parts 3, 3', or the surface of its vicinity containing the bearing use journal parts 3, 3', so that the hardness of the surface is increased. In this way, a degree by which the surface of the bearing use journal part is worn due to a slide against an inner ring of a bearing is reduced remarkably, and accordingly, by that portion, a life of a roller itself can be extended, and also, even if the journal parts 3, 3' are made to collide with other machine parts, etc. by a handling mistake, the generation of a state that they are deformed immediately as before can also be suppressed enough.