Image forming unit and image forming apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorKatsunori Mizuta
Life of this patent
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Abstract
According to one embodiment, there is provided an image forming unit including: an image carrier; a charger; a latent image forming unit; a developing roller; and a regulating member. The charger charges the image carrier. The latent image forming unit forms a latent image on the image carrier. The developing roller is arranged to face the image carrier and develops the latent image with a developer including a carrier and a toner. The regulating member regulates a layer thickness of the developer of a surface of the developing roller. The regulating member extends in a direction approaching the developing roller. A magnetic force exerted by the developing roller at a tip end of the regulating member in an extending direction is 55 mT or less.
Claims18
An image forming device, comprising:
- an image carrier;
- a charger configured to charge the image carrier;
- a latent image forming component configured to form a latent image on the image carrier;
- a developing roller positioned to face the image carrier and configured to develop the latent image with a developer comprising a carrier and a toner, wherein the toner has a softening temperature from 56° C. to 60° C.;
- and
- a regulating member configured to regulate a layer thickness of the developer of a surface of the developing roller,
- the regulating member extends in a direction approaching the developing roller, and
- a magnetic force exerted by the developing roller at a tip end of the regulating member in an extending direction is 55 mT or less.
An image forming device, comprising:
- an image carrier;
- a charger configured to charge the image carrier;
- a latent image forming component configured to form a latent image on the image carrier;
- a developing roller positioned to face the image carrier and configured to develop the latent image with a developer comprising a carrier and a toner;
- and
- a regulating member configured to regulate a layer thickness of the developer of a surface of the developing roller,
- the regulating member extends in a direction approaching the developing roller,
- a magnetic force exerted by the developing roller at a tip end of the regulating member in an extending direction is 55 mT or less, and
- an angle of a magnetic force line from the developing roller with respect to a reference line perpendicular to the extending direction of the regulating member at the tip end of the regulating member in the extending direction when viewed from an axial direction of the developing roller is 10° or less.
An image forming apparatus, comprising:
- an image reading component;
- a sheet tray;
- and
- an image forming device, comprising:
- an image carrier;
- a charger configured to charge the image carrier;
- a latent image forming component configured to form a latent image on the image carrier;
- a developing roller positioned to face the image carrier and configured to develop the latent image with a developer comprising a carrier and a toner;
- and
- a regulating member configured to regulate a layer thickness of the developer of a surface of the developing roller,
- the regulating member extends in a direction approaching the developing roller,
- a magnetic force exerted by the developing roller at a tip end of the regulating member in an extending direction is 55 mT or less, and
- an angle of a magnetic force line from the developing roller with respect to a reference line perpendicular to the extending direction of the regulating member at the tip end of the regulating member in the extending direction when viewed from an axial direction of the developing roller is 10° or less.
An image processing method, comprising:
- charging an image carrier;
- forming a latent image on the image carrier;
- developing the latent image with a developer comprising a carrier and a toner using a developing roller positioned to face the image carrier;
- regulating a layer thickness of the developer of a surface of the developing roller;
- and
- exerting a magnetic force at a tip end of a regulating member in an extending direction of 55 mT or less, wherein an angle of a magnetic force line from the developing roller with respect to a reference line perpendicular to the extending direction of a regulating member at the tip end of the regulating member in the extending direction when viewed from an axial direction of the developing roller is 10° or less.
Dependencies are inferred from the claim text.