Charge member, charge device and image forming apparatus
View Patent ↗A charge member is positioned in contact with an image carrier and charges a surface of the image carrier. The charge member includes a support body, an elastic layer having conductivity, which is formed on the support body; and a first surface treatment layer, which contains isocyanate compound and polycarbonate compound, is formed on the elastic layer. Residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.16 [V] or less.
1. A charge member that is positioned in contact with an image carrier and that charges a surface of the image carrier, comprising:
a support part;
an elastic layer having conductivity, which is formed on the support part; and
a first surface treatment layer, which contains isocyanate compound and polycarbonate compound, is formed on the elastic layer, wherein
residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.16 [V] or less.
2. The charge member according to claim 1 , wherein
the first surface treatment layer further contains carbon black.
3. The charge member according to claim 1 , further comprising:
a second surface treatment layer containing fluorine-based resin composition, which is formed on the first surface treatment layer.
4. The charge member according to claim 1 , wherein
surface treatment solution for forming the first surface treatment layer contains isocyanate compound and polycarbonate compound.
5. The charge member according to claim 4 , wherein
surface treatment solution for forming the first surface treatment layer further contains fluorine-based resin composition so that the first surface treatment layer contains fluorine-based resin composition.
6. A charge member that is positioned in contact with an image carrier and that charges a surface of the image carrier, comprising:
a support part;
an elastic layer having conductivity, which is formed on the support part; and
a first surface treatment layer, which contains isocyanate compound, polycarbonate compound and fluorine-based resin composition, is formed on the elastic layer, wherein
residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.29 [V] or less.
7. The charge member according to claim 6 , wherein
the first surface treatment layer further contains carbon black.
8. The charge member according to claim 6 , further comprising
a second surface treatment layer containing fluorine-based resin composition, which is formed on the first surface treatment layer.
9. The charge member according to claim 6 , wherein
surface treatment solution for forming the surface treatment layer contains isocyanate compound, polycarbonate compound and fluorine-based resin composition.
10. A charge device, comprising:
a charge member that is positioned in contact with an image carrier and that charges a surface of the image carrier, wherein
(a) the charge member includes
a support part, and
an elastic layer having conductivity, which is formed on the support part,
(b) a surface treatment layer, which contains isocyanate compound and polycarbonate compound, is formed on the elastic layer, and
(c) residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.16 [V] or less.
11. A charge device comprising
a charge member that is positioned in contact with an image carrier and that charges a surface of the image carrier, wherein
(a) the charge member includes
a support part, and
an elastic layer having conductivity, which is formed on the support part,
(b) a surface treatment layer, which contains isocyanate compound, polycarbonate compound and fluorine-based resin composition, is formed on the elastic layer, and
(c) residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.29 [V] or less.
12. An image forming apparatus, comprising:
a charge member that is positioned in contact with an image carrier and that charges a surface of the image carrier, wherein
(a) the charge member includes
a support part, and
an elastic layer having conductivity, which is formed on the support part,
(b) a surface treatment layer, which contains isocyanate compound and polycarbonate compound, is formed on the elastic layer, and
(c) residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.16 [V] or less.
13. An image forming apparatus, comprising:
a charge member that is positioned in contact with an image carrier and that charges a surface of the image carrier, wherein
(a) the charge member includes
a support part, and
an elastic layer having conductivity, which is formed on the support part,
(b) a surface treatment layer, which contains isocyanate compound, polycarbonate compound and fluorine-based resin composition, is formed on the elastic layer, and
(c) residual potential of the charge member in 0.1 [seconds] after corona discharge at a voltage of 6.0 [kV] is 12.29 [V] or less.