Back to results
US 7,031,642 B2Granted
Driving system for color image forming apparatus
AssigneeSeiko Epson Corporation
InventorNobumasa Abe
Life of this patent
Estimating the term…
Abstract
A plurality of image supporters are each operable to support a toner image of one color to be transferred. The toner images are each developed by a developing roller. A plurality of brush rollers are each brought into contact with an associated one of the image supporters to charge the same. A plurality of transmitters are each operable to transmit a driving force of an associated one of the image supporters or an associated developing roller to an associated one of the brush rollers.
Claims25
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a toner image of one color to be transferred;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- and
- a plurality of transmitters, each of which is operable to transmit a driving force of an associated one of the image supporters to an associated one of the brush rollers,
- wherein each of the transmitters comprises a step-up gear.
2 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a latent image of one color to be developed;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- a plurality of developing rollers, each of which is operable to develop the latent image as a toner image of one color which is to be transferred, on an associated one of the image supporters;
- and
- a plurality of transmitters, each of which is operable to transmit a driving force of an associated one of the developing rollers to an associated one of the brush rollers.
2 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a latent image of one color to be developed;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- a plurality of developing rollers, each of which is operable to develop the latent image as a toner image of one color which is to be transferred, on an associated one of the image supporters;
- and
- a transmitter, operable to transmit a driving force of one of the developing rollers to each of the brush rollers.
2 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a toner image of one color to be transferred;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- and
- a transmitter, operable to transmit a driving force of one of the image supporters to each of the brush rollers.
1 more element
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a toner image of one color to be transferred;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- and
- a transmitter, operable to transmit a driving force of one of the image supporters to each of the brush rollers;
- wherein the transmitter comprises a step-up gear.
2 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a toner image of one color to be transferred;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- and
- a driver, operable to rotate every one of the image supporters and every one of the brush rollers in a case where a monochrome image formation is performed,
- wherein the driver comprises a plurality of transmitters, each of which is operable to transmit a driving force of an associated one of the image supporters to an associated one of the brush rollers, and
- wherein each of the transmitters comprises a step-up gear.
3 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a toner image of one color to be transferred;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- and
- a driver, operable to rotate every one of the image supporters and every one of the brush rollers in a case where a monochrome image formation is performed,
- wherein the driver comprises a transmitter, operable to transmit a driving force of one of the image supporters associated with a black toner image to each of the brush rollers.
2 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a toner image of one color to be transferred;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- and
- a driver, operable to rotate every one of the image supporters and every one of the brush rollers in a case where a monochrome image formation is performed,
- wherein the driver comprises a transmitter, operable to transmit a driving force of one of the image supporters associated with a black toner image to each of the brush rollers;
- and
- wherein the transmitter comprises a step-up gear.
4 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a latent image of one color to be developed;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- a plurality of developing rollers, each of which is operable to develop the latent image as a toner image of one color which is to be transferred, on an associated one of the image supporters;
- and
- a driver, operable to stop, in a case where a monochrome image formation is performed, ones of the brush rollers which are associated with ones of the image supporters not used for the monochrome image formation,
- wherein the driver comprises a plurality of transmitters, each of which is operable to transmit a driving force of an associated one of the image supporters to an associated one of the brush rollers, which are not used for the monochrome image formation, and
- wherein each of the transmitters comprises a step-up gear.
4 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a latent image of one color to be developed;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- a plurality of developing rollers, each of which is operable to develop the latent image as a toner image of one color which is to be transferred, on an associated one of the image supporters;
- and
- a driver, operable to stop, in a case where a monochrome image formation is performed, ones of the brush rollers which are associated with ones of the image supporters not used for the monochrome image formation,
- wherein the driver comprises a plurality of transmitters, each of which is operable to transmit a driving force of an associated one of the developing rollers to an associated one of the brush rollers, which are not used for the monochrome image formation.
3 more elements
A color image forming apparatus, comprising:
- a plurality of image supporters, each of which is operable to support a latent image of one color to be developed;
- a plurality of brush rollers, each of which is brought into contact with an associated one of the image supporters to charge the same;
- a plurality of developing rollers, each of which is operable to develop the latent image as a toner image of one color which is to be transferred, on an associated one of the image supporters;
- and
- a driver, operable to stop, in a case where a monochrome image formation is performed, ones of the brush rollers which are associated with ones of the image supporters not used for the monochrome image formation,
- wherein the driver comprises a plurality of transmitters, each of which is operable to transmit a driving force of an associated one of the developing rollers to an associated one of the brush rollers, which are not used for the monochrome image formation, and
- wherein each of the transmitters comprises a step-up gear.
4 more elements
Dependencies are inferred from the claim text.