Developing device having dispersed floating electrodes in a dielectric layer

A device for developing an electrostatic latent image on an image supporting member by applying a single component developer thereto, comprising:

• a developer transporting means for transporting said developer along a predetermined path including a developing station where said latent image may be developed, said developer transporting means including an electrically conductive base, a dielectric layer formed on said base and a plurality of fine electrodes provided electrically isolated from each other at least at the outer surface of said dielectric layer, said dielectric layer having a substantial eleasticity and a hardness of 75.degree. or less, and
• means for supplying (a) said developer to said developer transporting means.

A device for developing an electrostatic latent image on an image supporting member by applying a single component developer, comprising:

• developer transporting means for transporting said developer along a predetermined path including a developing station where said latent image may be developed, said developer transporting means including an electrically conductive base, a first dielectric layer formed on said base, a second dielectric layer formed on said first dielectric layer and a plurality of fine electrodes provided electrically isolated from each other at least at the outer surface of said second dielectric layer, whereby said first dielectric layer has a hardness which is lower than that of said second dielectric layer;
• and
• means for supplying said developer to said developer transporting means.

A device for developing an electrostatic latent image on an image supporting member by applying a single component developer thereto, comprising:

• developer transporting means for transporting said developer along a predetermined path including a developing station where said latent image may be developed, said developer transporting means including first electrically conductive layer, a first dielectric layer formed on said first conductive layer, a second electrically conductive layer formed on said first dielectric layer, a second dielectric layer formed on said second conductive layer and a plurality of fine electrodes provided electrically isolated from each other at least at the outer surface of said second dielectric layer;
• and
• means for supplying said developer to said developer transporting means.

A device for developing an electrostatic latent image on an image supporting member by applying toner particles thereto, comprising:

• transporting means including an outer surface to which said toner particles are attracted so as to be transported along a predetermined path including a developing station where said latent image may be developed, said surface being roughened to have a representative size which is approximately one to four times the average diameter of said toner particles;
• and
• supplying means for supplying said toner particles to said transporting means.