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US 11,809,126 B2Granted
Charging member, charging device, process cartridge, and image forming apparatus
AssigneeFUJIFILM Business Innovation Corp.
InventorsYasuhiko Kinuta, Yuki Tagawa, Ken Ozaki, Noboru Hirakawa
Life of this patent
Estimating the term…
Abstract
A charging member includes a conductive base material; an elastic layer that is provided on the conductive base material and has a storage elastic modulus G of 5.0 MPa or less at 100 Hz; and a surface layer that is provided on the elastic layer, in which in a Cole-Cole plot obtained by measuring the charging member in a range of 1 MHz to 0.1 Hz by an alternating current impedance method, a resistance component Ra of a capacitive semicircle including 2.5 kHz is 6.3×104Ω or less.
Claims20
A charging member comprising:
- a conductive base material;
- an elastic layer that is provided on the conductive base material and has a storage elastic modulus G of 5.0 MPa or less at 100 Hz;
- and
- a surface layer that is provided on the elastic layer,
- wherein, in a Cole-Cole plot obtained by measuring the charging member in a range of 1 MHz to 0.1 Hz by an alternating current impedance method, a resistance component Ra of a capacitive semicircle including 2.5 kHz is 6.3×104Ω or less.
2 more elements
Dependencies are inferred from the claim text.