Developing apparatus
AssigneeCanon Kabushiki Kaisha
InventorKeiji Okano
Life of this patent
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Abstract
A developing apparatus includes developer carrying member for carrying a developer; wherein the developer carrying member is supplied with a developing voltage comprising a superimposed DC voltage component and AC voltage component to develop an electrostatic latent image formed on an image bearing member; switching means for switching an image density of a developed image on the image bearing member; wherein when the image density of the developed image is made higher than a predetermined image density in accordance with an output of the switching means, the frequency of the AC voltage component is made higher than a predetermined frequency.
Claims8
A developing apparatus comprising:
- developer carrying member for carrying a developer;
- wherein said developer carrying member is supplied with a developing voltage comprising a superimposed DC voltage component and AC voltage component to develop an electrostatic latent image formed on an image bearing member;
- switching means for switching an image density of a developed image on the image bearing member;
- wherein when the image density of the developed image is made higher than a predetermined image density in accordance with an output of said switching means, the frequency of the AC voltage component is made higher than a predetermined frequency.
Dependencies are inferred from the claim text.