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US 6,785,499 B1Granted
Developing device and image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorYoshiaki Tanaka
Life of this patent
Estimating the term…
Abstract
The developing device of the present invention has developer containers detachably to house developers to be supplied by hollow holding members, supports plural developing units to supply different color developers to an image carrier and plural developing units in the replaceable state, and a revolver to move a desired developing unit to a point opposite to the image carrier by rotating plural developing units en block, and openings of the holding members for inserting the developer containers in the holding members when removed.
Claims11
A developing device comprising:
- plural developing units having toner cartridges containing developer, respectively, which are detachably held by hollow shaped holders for supplying developers in different colors to an image carrier;
- and
- a revolver for supporting the developing units so that they can be exchanged and capable of rotating the developing units en bloc to oppose them to the image carrier,
- wherein each of the holders has an opening through which a hand is inserted to grasp and pull out the developing unit from the revolver when the toner cartridge is detached from the holder so that the holder becomes empty.
1 more element
An image forming apparatus comprising:
- a main body;
- an image carrier provided in the main body;
- a latent image forming unit to form a latent image on the image carrier;
- plural developing units having toner cartridges containing developer, respectively which are detachably held by hollow shaped holders for supplying the developers in different colors to the image carrier;
- and
- a revolver provided rotatably in the main body of the image forming apparatus, for supporting the developing units, rotating the plural developing units en bloc and positioning desired developing units to face the image carrier,
- wherein each of the holders has an opening through which a hand is inserted to grasp and pull out the developing unit from the revolver when the respective toner cartridge is detached from the holder so that the holder becomes empty.
4 more elements
A developing device comprising:
- plural developing units having toner cartridges containing developer, respectively, which are detachably held by hollow shaped holders for supplying developers in different colors to an image carrier;
- and
- a revolver that supports the developing units so that they can be exchanged is capable of rotating the developing units en bloc to oppose them to the image carrier,
- wherein each of the developing units can be pulled out from the revolver when the respective toner cartridge is detached from the holder so that the holder becomes empty.
1 more element
A developing device comprising:
- plural developing units having toner cartridges containing developer, respectively, which are detachably held by hollow shaped holders for supplying developers in different colors to an image carrier, each of the toner cartridges and the holders configured so that the respective toner cartridge can be pulled out from the respective holder in a first direction;
- and
- a revolver that supports the developer units so that they can be exchanged and is capable of rotating the developing units en bloc to oppose them to the image carrier, the revolver and the developing units configured so that each developing unit can be pulled out from the revolver in a second direction that is different from the first direction.
A developing device comprising:
- a plurality of developing units, each of the developing units has a toner cartridge containing developer and has a holder for detachably holding the toner cartridge, the developing units supplying developers in different colors to an image carrier;
- and
- a revolver configured to support the developing units so that they can be exchanged, and configured to rotate the developer units en bloc to position them opposite to the image carrier,
- wherein each of the developing units is detachably attached to the revolver, and is configured for removal from the revolver when the toner cartridge has been removed from the holder.
1 more element
Dependencies are inferred from the claim text.