Epson P-80 User Manual download pdf (Page 46)

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DATA 134,-6,32,134,-6,149,134,-l

DATA 134,152,32,152,32,152,32,134,-6,32,134,-1

DATA 137,-6,133,129,-6,133,138,0

Now that you have seen the program work, you can substitute

your own DATA lines to make it print any combination of graphics

characters you need. Notice that each DATA line corresponds to a

print line, and each ends with -1, except for the last, which ends the

program with a zero. For spaces, you use 32, the ASCII code for a

space. You can repeat any character, including the space, by entering

the number of repetitions as a negative number followed by the num-

ber of the character to be repeated. For example, the first part of line

90 supplies the DATA for one vertical line (character 134), six spaces,

and another vertical line.

Dot Graphics

Think of your piece of paper as an artist’s canvas waiting for the

images you create. With dot graphics, you use dots instead of brush-

strokes to form your pictures and designs. If you plan carefully where

you want the dots to appear and use your computer to give the printer

the proper instructions, your P-80 will generate nearly any pattern or

figure you wish.

Printing high-resolution graphics on the P-80 requires a mode that

is very different from text modes. In dot graphics mode, none of the

predefined characters or symbols in the printer’s memory is used.

Instead, you create the patterns of dots that are printed. Thus, you

control where each and every dot is printed.

Print Head

For each column position on a print line, the print head impresses

the pattern of dots that you have specified. Before you can start

designing these patterns, you need to know a little more about the

way the print head works.

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Epson P-80 User Manual Page 46