Back to results
US 4,046,928 AGranted
Electroresistive paper
AssigneeXerox Corporation
InventorAlptekin Akman
Life of this patent
Estimating the term…
Abstract
This invention relates to an electrosensitive marking blank having a blushed conductive layer and a pigment containing blushed masking layer. The instant electrosensitive element has particular utility in that a relatively thin masking layer in combination with a blushed conductive layer results in a blank having improved whiteness and contrast characteristics.
Claims6
An electrosensitive marking blank comprising:
- a. a substrate;
- b. a blushed opaque conductive layer coated on said substrate said conductive layer including conductive carbon in a film-forming binder of cellulose acetate butyrate;
- and
- c. a contrasting masking layer overlaying said conductive coating said masking layer containing a pigment and film-forming binder said masking layer completely overlaying said conductive coating in order to provide contrast with the conductive layer upon electrical stylus removal of the opaque masking layer.
1 more element
A process for making an electrosensitive marking blank of improved contrast comprising:
- a. blush coating a conductive material in a film-forming binder on a substrate to effect an opaque conductive coating thereon;
- and
- b. blush coating a contrasting pigment and film-blushing binder over the conductive coating in order to completely mask the conductive layer.
Dependencies are inferred from the claim text.