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US 7,473,509 B2Granted
Image forming method and image forming apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorsAkihiko Itami, Masao Asano, Hiroshi Yamazaki
Life of this patent
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Abstract
A toner image is formed while a developing sleeve is rotated in a direction counter to that of an organic photoreceptor at the developing section and a surface layer of the organic photoreceptor contains metal oxide particles which have a number average primary particle diameter of 3 to 150 nm and are chosen from metal of the 3rd or 4th cycle of a periodic table.
Claims21
An image forming method, comprising the steps of:
- forming an electrostatic latent image on a rotatable organic photoreceptor;
- forming a developing brush with a developing agent containing a toner on a rotatable developing sleeve;
- and
- visualizing the electrostatic latent image into a toner image while the developing sleeve is rotated in a direction counter to that of the organic photoreceptor at the developing section by bringing the developing brush in contact with the organic photoreceptor at a developing region;
- wherein a surface layer of the organic photoreceptor contains metal oxide particles which have a number average primary particle diameter of 3 to 150 nm and metal constituting the metal oxide comprises metal selected from silicon, aluminum and titanium.
2 more elements
An image forming method, comprising the steps of:
- (a) forming an electrostatic latent image on a rotatable organic photoreceptor;
- (b) forming a developing brush with a developing agent containing toner on a developing sleeve;
- (c) visualizing the electrostatic latent image to form a toner image by bringing the developing brush onto the organic photoreceptor while the developing sleeve is rotated in a direction counter to that of the organic photoreceptor at the developing section, and
- (d) transferring the toner image to an intermediate transfer member;
- (e) conducting the steps of (a) through (d) for each of plural different colors so as to superimpose the plural different color toner images on the intermediate transfer member;
- and
- (f) transferring the superimposed different color toner images to a recording material;
- wherein a surface layer of the organic photoreceptor contains metal oxide particles which have a number average primary particle diameter of 3 to 150 nm and metal constituting the metal oxide comprises metal selected from silicon aluminum and titanium.
5 more elements
An image forming-apparatus, comprising:
- (a) an organic photoreceptor to form an electrostatic latent image thereon;
- (b) a developing device to form a developing brush with a developing agent containing toner on a developing sleeve and to bring the developing brush in contact with the organic photoreceptor at a developing section so as to visualize the electrostatic latent image on the organic photoreceptor to toner image;
- wherein a surface layer of the organic photoreceptor contains metal oxide particles which have a number average primary particle diameter of 3 to 150 nm and metal constituting the metal oxide comprises metal selected from silicon, aluminum and titanium, and the electrostatic latent image is visualized to the toner image while the developing sleeve is rotated in a direction counter to that of the organic photoreceptor at the developing section.
Dependencies are inferred from the claim text.