78 Zebra ZXP Series 1 Card Printer Service Manual P1061942-001
3: Theory of Operation
Card Printing Basics
3.2 Card Printing Basics
This section provides an overview description of how images are printed on plastic cards.
Printhead
The Printhead Assembly mounts in the Printhead Bracket, which holds the Printhead at a right
angle to the card’s long surface.
The Printhead is a thin-film device that consists of a row of individually addressable heating
elements. Each heating element is approximately 0.0033 inch (0.08 mm) wide, giving a print
resolution of 300 dots per inch.
There are a total of 672 heating elements. Since the width of the plastic card is 2.125 inches
(54 mm), 638 elements provide full-width coverage.
The “extra” 34 elements (17 on either side of the card’s nominal width) are present to support
programmable image centering and full bleed imaging even if a card is slightly oversize.
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