Patent ID: 11947272
Assignee: NOK CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A method for producing a conductive roller, the method comprising:
a formation process that includes forming a surface layer of the conductive roller; and
a determination process that includes determining whether characteristics of the conductive roller are good,
wherein the conductive roller includes:
a core member including an outer surface along and about an axial line thereof; and
the surface layer arranged along the outer surface of the core member, wherein the surface layer includes:
a conductive portion; and
a surface roughness imparting material in a form of particles dispersed in the conductive portion,

wherein an average particle size of the surface roughness imparting material is in a range of 6 micrometers or greater and 10 micrometers or less,
wherein an average thickness of the surface layer is in a range of 3.0 micrometers or greater and 15.0 micrometers or less,
wherein the determining whether characteristics of the conductive roller are good includes:
calculating a number of particles of the surface roughness imparting material per unit area of the surface layer; and
determining, based on the number of particles being in a range of 1.0×104 particles per mm2 or greater and 2.0×106 particles per mm2 or less, that the characteristics of the conductive roller are good.