Drop-On-Demand Nozzle Interlace Pattern
Original Publication Date: 1985-Jun-01
Included in the Prior Art Database: 2005-Feb-18
This article is directed toward multi-nozzle drop-on-demand (DOD) ink jet printing. It is equally applicable to wire-matrix printing. Columns of nozzles in a multi-nozzle DOD printhead are arranged in an interlace pattern in which pels (picture elements) that are adjacent on the page are ejected from columns of nozzles which are no more than two columns apart. This arrangement has the advantage that perceived drop placement on the printed page is less sensitive to print-mechanism-induced errors than other interlace patterns. The disclosed nozzle interlace pattern is shown in Fig. 1 for a four-column printhead. Here, pels which are adjacent on the page are printed by columns of nozzles which are no more than two columns apart. Successive vertical pels are printed in the order: 1-3-4-2-1-3-4-2-1-3...