Carrier for electrostatic latent image developing
AssigneeMinolta Co., Ltd.
InventorsHiroshi Shibano, Tomoharu Nishikawa, Koichi Takenaka, Hideaki Yasunaga
Life of this patent
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Abstract
A carrier for electrostatic latent image developing for use in methods of developing an electrostatic latent image formed on the surface of a latent image-bearing member by transporting a developer comprising a toner and a carrier via the rotation of a developing sleeve having a built in stationary magnet roller, the carrier for electrostatic latent image developing including magnetic powder dispersed in a binder resin and having a saturation magnetization of about 50 to about 80 emu/g, residual magnetization of about 3 to about 10 emu/g, and coercive force of about 20 to about 50 oersted.
Claims21
A method for forming a magnetic brush comprising:
- forming an electrostatic latent image;
- rotating a sleeve which is adjacent to the image;
- arranging a fixed magnet adjacent to the sleeve;
- and
- applying a developer including a toner and a carrier onto said sleeve, said carrier having a saturation magnetization of about 50 to about 80 emu/g, a residual magnetization of about 3 to about 10 emu/g, and a coercive force of about 20 to about 50 oersted, said carrier comprising a binder resin and magnetic powder dispersed in the binder resin.
A method for forming a magnetic brush comprising:
- forming an electrostatic latent image;
- rotating a sleeve which is adjacent to the image;
- arranging a fixed magnet adjacent to the sleeve;
- and
- applying a developer including a toner and a carrier onto said sleeve, said carrier having a saturation magnetization of about 50 to about 80 emu/g, a residual magnetization of about 3 to about 10 emu/g, and a coercive force of about 20 to about 50 oersted, wherein said carrier comprises a binder resin and magnetic powder dispersed in the binder resin and the magnetic powder has an oil absorption of about 5 to about 15 g/100 g.
A carrier comprising:
- a binder resin;
- and
- magnetic powder dispersed in the binder resin, said carrier having a saturation magnetization of about 50 to about 80 emu/g, a residual magnetization of about 3 to about 10 emu/g, and a coercive force of about 20 to about 50 oersted.
A carrier comprising:
- a binder resin;
- and
- magnetic powder dispersed in the binder resin, said carrier having a saturation magnetization of about 50 to about 80 emu/g, a residual magnetization of about 3 to about 10 emu/g, and a coercive force of about 20 to about 50 oersted, said magnetic powder having an oil absorption of about 5 to about 15 g/100 g.
Dependencies are inferred from the claim text.