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US 2006/0222415 A1Published application
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorFumitake Hirobe
Life of this patent
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Abstract
An image forming apparatus which can stably form an image of high quality by the use of a first developer carrying member and a second developer carrying member. On the first developer carrying member, development is performed by a method whereby a magnetic carrier contacts with an image bearing member, and on the second developer carrying member, development is performed by a method whereby the magnetic carrier does not contact with the image bearing member.
Claims15
An image forming apparatus comprising:
- an image bearing member on which an electrostatic image is formed;
- and
- a developing device provided with a developer container containing a developer including a magnetic carrier and a nonmagnetic toner, and first and second developer carrying members disposed in an opening portion of said developer container in opposed relationship with said image bearing member for developing the electrostatic image in common on said image bearing member,
- wherein on said first developer carrying member, development is performed by a method whereby said magnetic carrier contacts with said image bearing member, and
- on said second developer carrying member, development is performed by a method whereby said magnetic carrier does not contact with said image bearing member.
2 more elements
Dependencies are inferred from the claim text.