TransAct EPIC 630, Programmer'S Manual

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The TransAct
®
EPIC 630 Printer has bit-image graphic capability and a full PC-
compatible graphic character set. The bit image format is similar to that used on other
personal computer printers. Three modes of operation are available. Single-density is
the fastest mode. It makes a single unidirectional 60 dpi print pass. Full-speed double-
density mode makes two passes with a half-dot offset. Full-speed double-density mode
is half the speed of single-density mode, but it prints at 120 dpi. Half-speed double-
density mode is half the speed of full-speed double-density; however, the print quality is
enhanced.
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Character graphics is the term for joining individual characters together to produce a
mosaic of characters that form a graphic image. The simplest method uses an * (or any
other character) to form an image. For example, TRANSACT
®
might be formed as
follows.
*** *** * * ** *** **
* * * * * * * * * *
* * ***** **** * ****
* * * * * * * * * *
*** * * * * * *** * *
Figure 5 Example of Character Graphics
The extended character set of the printer supports line graphic characters that can be
combined to form windows and other shapes. For the shapes to join from line to line,
the spacing must be set properly.