Patent ID: 11947273
Assignee: NOK CORPORATION
Field: Optics (Instruments)
Classification: CPC G  F | IPC F  G

Claim 1:
2. A conductive roller comprising:
a core member including an outer surface along and about an axial line thereof; and
a 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,
an average particle size of the surface roughness imparting material is in a range of 10 micrometers or greater and 32 micrometers or less,
a number of particles of the surface roughness imparting material per unit area of the surface layer is in a range of 1.8×103 particles per mm2 or greater and 1.7×105 particles per mm2 or less, and
an average thickness of the surface layer is in a range of 0.2 micrometers or greater and 5.8 micrometers or less.