Printhead structure and method of fabrication.

摘要

An electrostatic or thermal printhead (34) and method of fabrication is provided in which dielectric material (20) is disposed in a row of spaced depressions (14) or in a single recess (16) along the upper surface of an edge (12) of a dielectric-coated conductive sheet (10). Electrodes (22) are disposed along the edge of the sheet over the dielectric material and terminate at associated conductive pads (24) or printhead circuitry (40) on the sheet. In one embodiment, the edge is trimmed and left bare to form an inexpensive electrostatic printhead. In an alternative embodiment, resistive material (42) is disposed over the edge to connect the electrodes (22) to the conductive sheet (10) to form an inexpensive thermal printhead.