Apparatus for information transfer including a dielectric element and generally non-imagewise charge service
AssigneeCubital Ltd.
InventorAlbert Zur
Life of this patent
Estimating the term…
Abstract
Apparatus for information transfer and including a dielectric element having generally opposite first and second surfaces, an information bearing voltage pattern being associated with the first surface and an information bearing charge pattern being associated with the second surface, means for applying a flow of charges to the second surface, the flow of charges being operative to transfer information between the first and second surfaces.
Claims36
Apparatus for information transfer comprising:
- a dielectric element having a first surface and a second surface which are generally opposite, a non-visible information bearing voltage signal initially being associated with said first surface or an information bearing charge pattern initially being associated with said second surface;
- and
- generally non-imagewise source means for applying a non-visible flow of charges only to said second surface, said flow of charges being operative to transfer information between said first surface and second surface from said voltage signal to a charge pattern or from said charge pattern to a voltage signal.
A method for information transfer and including the steps of:
- providing a dielectric element having a first surface and a second surface which are generally opposite and having either an information bearing voltage signal associated with said first surface or an information bearing charge pattern associated with said second surface;
- and
- applying a generally non-imagewise, non-visible flow of charges only to said second surface, said flow of charges being operative to transfer information between said first and second surfaces, from said voltage signal to a charge pattern or from said charge pattern to a voltage signal.
Apparatus for reading an electrostatic charge pattern comprising:
- a dielectric substrate having first surface and second opposite surface;
- a conductive backing operatively associated with said first surface;
- an information bearing charge pattern associated with said second surface;
- generally non-imagewise source means for applying a non-visible flow of charges to said second surface thereby converting said information bearing charge pattern to a corresponding electrical voltage signal in said conductive backing;
- and
- means coupled to said conductive backing for sensing said electrical voltage signal and providing an electrical output representing said pattern.
A method for reading an electrostatic charge pattern including the steps of:
- providing a dielectric substrate having first surface and second opposite surface;
- operatvely associating a conductive backing with said first surface;
- associating an information bearing charge pattern with said second surface;
- applying, in a generally non-imagewise manner, a non-visible flow of charges to said second surface thereby converting said information bearing charge pattern to a corresponding electrical voltage signal in said conductive backing;
- and
- sensing said electrical voltage signal and providing an electrical output representing said pattern.
Dependencies are inferred from the claim text.