Title:
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2024/034290
Kind Code:
A1
Abstract:
Provided is a charging roll for electrophotographic equipment that is exceptional in terms of uniformity of discharge characteristics. Provided is a charging roll 10 in which one or more groove parts 22 extending along a direction within ±46° of a circumferential direction y are regularly formed in an axial direction x on the outer peripheral surface of an elastic layer 14, the groove width w1 is 4-30 μm, the groove depth d is 2-12 μm, the width w2 of flat surface parts 24 that are portions of the outer peripheral surface of the elastic layer 14 other than the groove parts 22 is 4-30 μm, the angle θ of the direction in which the groove parts 22 extend with respect to the circumferential direction y and the ratio w2/w1 of the groove width w1 of the groove parts 22 and the width w2 of the flat surface parts 24 have a specific relationship, a surface layer 16 includes a binder polymer 16a and roughness-forming particles 18, and the roughness-forming particles 18 are disposed on both the flat surface parts 24 and the groove parts 22.
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Inventors:
SAITO YOSHIHIRO (JP)
SUENAGA JUNICHIRO (JP)
MURAI MANAMI (JP)
SUENAGA JUNICHIRO (JP)
MURAI MANAMI (JP)
Application Number:
PCT/JP2023/024706
Publication Date:
February 15, 2024
Filing Date:
July 04, 2023
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
F16C13/00; G03G15/02; G03G15/00
Foreign References:
| JP2015045788A | 2015-03-12 | |||
| JP2013076861A | 2013-04-25 | |||
| JP2021067740A | 2021-04-30 | |||
| JP2018060162A | 2018-04-12 | |||
| JP2022127132A | 2022-08-31 |
Attorney, Agent or Firm:
YAMADA, Kazuhiro (JP)
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