GCM 111 Study Guide - Final Guide: Movable Type, Adobe Indesign, Flexography
16 Sep 2017
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Document Summary
Two basic types of ink-jets are continuous jet in which drops are generated continuously and deflected to produce an image and drop-on-demand in which a drip is formed and emitted by heat or pressure. Piezoelectric printers use a voltage pulse applied to a piezoelectric crystal to generate a pressure pulse in the imaging head that cause emission of a droplet. Thermal in-jet systems have two primary types: (cid:883). bubblejet and (cid:884). Bubblejet printers use resistive heating that causes the liquid ink to boil. This produces an ink drop and vapor that propels the drop to the paper. Solid ink/phase change printers use heat to melt solid sticks of ink, and the phase-changed melted ink is converted to drops that are ejected using impulses from a piezoelectric crystal . The drops undergo another phase change from liquid to solid on contact with the paper.
