Color Isolation for Drop-On-Demand Nozzle Assembly
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Described is a means for isolating nozzles in a multi-nozzle drop-on-demand (DOD) color ink jet printer that prevents mixing of inks of different colors. This idea is also applicable to ink jet printers having nozzles of a single color closely packed in a single array to achieve good spot placement. Color ink jet printer heads are usually designed with a single, closely-packed, multi-nozzle array to achieve precise drop placement when mounted on a translating mechanism in a serial printer. This idea minimizes the number of components, reduces parts cost, and facilitates manufacture. The nozzle array consists of a single silicon chip forming a nozzle array coated with a low surface energy coating to confine the ink to the nozzles.