Developing apparatus
AssigneeCanon Kabushiki Kaisha
InventorJunichiro Kanbe
Life of this patent
Estimating the term…
Abstract
A developing apparatus used to develop the latent image on the latent image holding body, which has a developing agent holding roller established in proximity or in contact with the latent image holding body and a developing agent supplying roller which supplies the developing agent to the developing agent holding roller. The developing agent supplying roller is arranged with a gap against the developing agent holding roller and to this gap an electric field is applied to deliver the developing agent from the one to the other.
Claims30
A developing apparatus for developing a latent image by applying one component developing agent to a latent image holding body comprising:
- developing agent holding means for holding the developing agent on the surface thereof and carrying it to a developing station;
- developing agent supply means for supplying the developing agent to said developing agent holding means, said developing agent supplying means being positioned to face said developing agent holding means with a gap therebetween;
- means for limiting the thickness of the layer of developing agent formed on said developing agent supplying means to be less than the gap between said developing agent holding means and said developing agent supplying means so as to form a clearance between said developing agent holding means and the layer of developing agent;
- and
- means for applying an AC voltage across the gap between said developing agent holding means and developing agent supplying means to cause the developing agent to fly from said developing agent supplying means to said developing agent holding means across the clearance.
A developing apparatus for developing a latent image by applying one component developing agent to a latent image holding body comprising:
- developing agent holding means for holding the developing agent on the surface thereof and carrying it to a developing station;
- developing agent supplying means for supplying developing agent to said developing agent holding means, said developing agent supplying means being positioned to face said developing agent holding means with a gap therebetween;
- means for limiting the thickness of the layer of developing agent formed on said developing agent supplying means to be less than the gap between said developing agent holding means and said developing agent supplying means so as to form a clearance between said developing agent holding means and the layer of developing agent;
- means for forming an AC electric field in the gap between said developing agent holding means and developing agent supplying means to cause the developing agent to fly from said developing agent supplying means to said developing agent holding means across the clearance;
- and
- means for controlling the thickness of the developing agent layer on said developing agent holding means.
A developing apparatus for developing a latent image by applying developing agent to a latent image holding body comprising:
- developing agent holding means for holding a developing agent layer on its surface and which is movable;
- developing agent supplying means for supplying the developing agent to said developing agent holding means, the developing agent supplying means being made to face said developing agent holding means with a gap therebetween;
- and
- means of forming an alternating electric field in the gap between said developing agent holding means and developing agent supplying means to deliver the developing agent from one to the other.
A developing apparatus for developing a latent image by applying developing agent to a latent image holding body comprising:
- developing agent holding means for holding a developing agent layer on its surface and which is movable;
- developing agent supplying means for supplying developing agent to said developing agent holding means and which is made to face said developing agent holding means with a gap therebetween;
- means for forming an alternating electric field in the gap between said developing agent holding means and developing agent supplying means to deliver the developing agent from one to the other;
- and
- means for controlling the thickness of the developing agent layer on said developing agent holding means.
Dependencies are inferred from the claim text.