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US 8,412,069 B2Granted
Charging unit, manufacturing method for charging unit, process cartridge and image forming device
AssigneeFuji Xerox Co., Ltd.
InventorsTakeshi Kawai, Yasuaki Miyazawa, Masato Ono
Life of this patent
Estimating the term…
Abstract
A charging unit is provided, the charging unit including: a charging member; and a charging member clean-up member having an elastic layer, the elastic layer containing a silicon oil, wherein a silicone concentration in analyzing the charging member by an x-ray photoelectron spectroscopy satisfies following condition: about 1 atm %≦(difference between the maximum value and the minimum value of the silicone concentration in Si2p detected by the x-ray photoelectron spectroscopy above the charging member)≦about 3 atm %.
Claims16
A charging unit, comprising:
- a charging member;
- and
- a charging member clean-up member having an elastic layer, the elastic layer containing a silicon oil,
- wherein a silicone concentration in analyzing the charging member by an x-ray photoelectron spectroscopy satisfies following condition:
- about 1 atm %≦(difference between the maximum value and the minimum value of the silicone concentration in Si2p detected by the x-ray photoelectron spectroscopy above the charging member)≦about 3 atm %.
2 more elements
A charging unit, comprising:
- a charging member;
- and
- a charging member clean-up member having an elastic layer, the elastic layer containing a silicon oil,
- wherein a silicone concentration in analyzing a contact part and a non-contact part of the charging member with the elastic layer by an x-ray photoelectron spectroscopy in a state where the elastic layer of the charging member clean-up member in unused state and the charging member in unused state are contacted for one day or more satisfies the following condition:
- about 1 atm %≦(difference in the silicone concentration in Si2p between the contact part and the non-contact part of the charging member with the elastic layer detected by the x-ray photoelectron spectroscopy above the charging member)≦about 3 atm %.
2 more elements
Dependencies are inferred from the claim text.