Printronix MVP Series User Manual

Page 96

Graphics

5–6

High Resolution Raster Plot Syntax

The proper command syntax for high resolution graphics is:

1) Even dot center control sequence . . . plot data . . . line terminator

followed by:

2) Odd dot center control sequence . . . plot data . . . line terminator

For Example,

EOT

(data)

ENQ

(data)

NOTE: When plotting even dot centers using EOT, ESC Y (line feed and

form feed commands denote end of plot data only), the paper will

not advance. When plotting odd dot centers (ENQ, ESC Z), line

feed and form feed control character denote end of plot data, and

paper will advance to the next plot line or to top–of–form.

Scaling Graphics

Scaling graphics is possible by changing print modes. Each mode has a fixed

dot density in dots per inch, which results in a different physical length for

the same raster plot data when it is plotted in different print modes. For

example, a given set of plot data that prints a one inch long line in Mode 1

(100 dots per inch) would print a line two inches long in Mode 4 (50 dots per

inch). The different length occurs because the same number of dots are

printed at different dot densities.Table 5–3 lists all the modes and their dot

densities in dots per inch.

Table 5–3. Dot Density by Mode

Mode No.

Mode

Dots/Inch

Mode selected by

ASCII code

Word Processing

100

ESC P

Data Processing

ESC R

Compressed Print

62.5

ESC V

High Speed Plot

front panel switch

Condensed Print

100

SI or ESC SI

Expanded Print

SO or ESC SO

* Mode 6 operable only if Configuration Option 20.0 is selected