Electric charging member and electric charging apparatus
AssigneeBridgestone Corporation
InventorsYoshitomo Masuda, Hajime Tamura, Takahiro Kawagoe, Yoshio Takizawa, Gaku Yakushiji, Kazuya Murata, Shohei Morikawa
Life of this patent
Estimating the term…
Abstract
An electric charging member and electric charging apparatus are described, including the surface of the charging member being formed of a resin layer including a nylon copolymer containing at least 15% by weight of nylon 12 or a urethane-modified acrylic resin containing 5-80% by weight of an acrylic resin component.
Claims20
A charging member which is contacted at its surface with an object to be charged wherein the object is charged by applying a voltage between the charging member and the object,
- the surface of said charging member in contact with the object being formed of a resin layer comprising a nylon copolymer selected from the group consisting of nylon 6/66/12, 6/610/12, 6/612/12, 6/66/610/12, 6/66/11/12, 6/69/610/12, 6/66/69/12, 6/66/612/12, and 6/610/11/12, said nylon copolymer containing at least 15% by weight of nylon 12.
A charging apparatus comprising
- a charging member which is contacted at its surface with an object to be charged and
- means for applying a voltage between said charging member and said object,
- the surface of said charging member in contact with the object being formed of a resin layer comprising a nylon copolymer selected from the group consisting of nylon 6/66/12, 6/610/12, 6/612/12, 6/66/610/12 6/66/11/12, 6/69/610/12, 6/66/69/12, 6/66/612/12, and 6/610/11/12, said nylon copolymer containing at least 15% by weight of nylon 12.
A charging member which is contacted at its surface with an object to be charged wherein the object is charged by applying a voltage between the charging member and the object,
- the surface of said charging member in contact with the object being formed of a resin layer comprising a urethane-modified acrylic resin containing 5 to 80% by weight of an acrylic resin component.
A charging apparatus comprising
- a charging member which is contacted at its surface with an object to be charged and
- means for applying a voltage between said charging member and said object,
- the surface of said charging member in contact with the object being formed of a resin layer comprising a urethane-modified acrylic resin containing 5 to 80% by weight of an acrylic resin component.
A charging member which is contacted at its surface with an object to be charged wherein the object is charged by applying a voltage between the charging member and the object,
- particles having a particle size of 35 to 100 .mu.m being distributed in the proximity of the surface of said charging member in contact with said object.
A charging apparatus comprising
- a charging member which is contacted at its surface with an object to be charged and
- means for applying a voltage between said charging member and said object,
- particles having a particle size of 35 to 100 .mu.m being distributed in the proximity of the surface of said charging member in contact with said object.
Dependencies are inferred from the claim text.