Developer for developing electrostatic latent image
AssigneeBrother Kogyo Kabushiki Kaishi
InventorsMitsuru Ohta, Noriaki Satoh
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Abstract
A developer for developing an electrostatic latent image formed on an photosensitive body, including a toner, a fluidity improving material, a cleaning material, and hydrophobic fine particles obtained by treating surfaces of the fine particles with silicone, the treated fine particles containing not less than 5% of the silicone.
Claims25
A developer for developing an electrostatic latent image formed on a photosensitive body, comprising:
- a toner;
- a fluidity improving material;
- a cleaning material;
- and
- hydrophobic fine particles obtained by treating surfaces of said fine particles with silicone oil, the treated fine particles containing not less than 5% of said silicone oil,
- said fine particles comprising crystalline titanium oxide obtained by a sulfuric acid method and consisting of one of a rutile-type titanium dioxide and anatase-type titanium dioxide.
A process for developing an electrostatic latent image, comprising:
- forming an image on a photosensitive body;
- developing said image with a developer to form a toner image;
- and
- transferring said toner image onto a recording medium, wherein said developer comprises:
- a magnetic toner;
- a carrier;
- fine particles of hydrophobic silica;
- fine particles of alumina;
- and
- fine particles of crystalline titanium oxide having surfaces treated with silicone oil, the treated fine particles containing not less than 10% of said silicone oil,
- and wherein said fine particles of crystalline titanium are selected from the group consisting of one of a rutile-type titanium dioxide and anatase-type titanium dioxide, and wherein said crystalline titanium oxide is obtained by a sulfuric-acid method.
A developer for developing an electrostatic latent image formed on a photosensitive body, comprising:
- a toner;
- a fluidity improving material;
- a cleaning material;
- and
- fine particles of crystalline titanium oxide having surfaces treated with silicone oil, said fine particles of crystalline titanium oxide being obtained by a sulfuric acid method and consisting of one of a rutile-type titanium dioxide and anatase-type titanium dioxide.
A developer for developing an electrostatic latent image formed on a photosensitive body, comprising:
- a magnetic toner;
- a carrier;
- fine particles of hydrophobic silica;
- fine particles of alumina;
- and
- fine particles of crystalline titanium oxide having surfaces treated with silicone oil, the treated fine particles containing not less than 10% of said silicone oil, said fine particles of crystalline titanium oxide being obtained by a sulfuric acid method and consisting of one of a rutile-type titanium dioxide and anatase-type titanium dioxide.
A process for developing an electrostatic latent image, comprising:
- forming an image on a photosensitive body;
- developing said image with a developer to form a toner image;
- and
- transferring said toner image onto a recording medium, wherein said developer comprises:
- a toner;
- a fluidity improving material;
- a cleaning material;
- and
- hydrophobic fine particles obtained by treating surfaces of said fine particles with silicone oil, the treated fine particles containing not less than 5 % of said silicone oil,
- wherein said fine particles comprise crystalline titanium oxide selected from the group consisting of one of a rutile-type titanium dioxide and anatase-type titanium dioxide, and wherein said crystalline titanium oxide is obtained by a sulfuric-acid method.
A process for developing an electrostatic latent image, comprising:
- forming an image on a photosensitive body;
- developing said image with a developer to form a toner image;
- and
- transferring said toner image onto a recording medium, wherein said developer comprises:
- a toner;
- a fluidity improving material;
- a cleaning material;
- and
- fine particles of crystalline titanium oxide having surfaces treated with silicone oil,
- wherein said fine particles of crystalline titanium oxide are obtained by a sulfuric-acid method and consist of one of a rutile-type titanium dioxide and anatase-type titanium dioxide.
Dependencies are inferred from the claim text.