Business form with electrically conductive layer

Abstract

A business form has first and second coatings one of which is electrically conductive and the other is electrically non-conductive. The coatings are of contrasting colors and the second coating is electrically vaporizable for exposing the underlying coating when selectively removed during a "write" operation. The coatings may overlay a base material to form a three layer structure or the base material itself may function as one of the coatings of appropriate color and conductivity. A third coating overlays the second coating to form a matrix or array thereby organizing the document into sections. At the same time the third coating is put down, a light coat of a contrasting color can be overlaid the second coating. These two operations can be performed separately and in either order. The business form may be composed of first and second sections in which the second section may be a repeat of the basic information contained in the first section. The second section itself may be repeated either in total or in part in more than one place on the business form. One or more of these parts may be easily detached. The second section is encoded for machine reading. One or both sections may have marks to indicate the position of the section with respect to a input-output device.

Dependencies are inferred from the claim text.