Thermal Print Head Resistor Patterning for High-Definition Printing

The electrode layer is divided into comb portions and striped portions that are alternately arranged, creating a segmented structure. This segmentation allows the heat generating portions to be defined by the intersections of these segments, enabling smaller and more precisely defined heating elements without being constrained by single-process etching limitations.

The patent transitions from a single-layer electrode structure to a multi-dimensional alternating pattern of comb portions and striped portions. By arranging electrodes in alternating rows extending in different directions (main scan direction and secondary scan direction), the invention creates a two-dimensional grid structure that enables finer spacing and higher definition printing.

The electrode system is segmented into distinct comb portions and striped portions that can be formed through standardized patterning processes. This segmentation allows each portion to be manufactured using conventional etching techniques while achieving smaller overall heat generating portions through the alternating arrangement.

The patent uses an alternating pattern where comb portions and striped portions extend partially across the substrate in different directions. This partial extension creates the necessary spacing and alignment for small heat generating portions without requiring excessive precision in the etching process for the entire electrode structure.