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Defining Graphic Image Data
Graphic images are created by a series of dots printed in a
specific pattern. This pattern results from a process of turning
dots "ON" or "OFF" on the printhead.
We will use the terms "black dots" to describe a dot that is ON,
and "white dots" for a dot that is OFF.
This section describes how to build a data stream to create this
pattern with your printer.
This example shows
how black dots and
white dots form an
image of the letter A.
To create a data stream for this image, start with the bottom row.
Count the number of white dots and black dots, in order of
appearance in each row.
For example, rows 1 through 4 (at the bottom) in the image above
have these dot counts:
Row 1: 4 White, 8 Black, 19 White, 8 Black, 4 White
Row 2: 4 White, 8 Black, 19 White, 8 Black, 4 White
Row 3: 4 White, 8 Black, 19 White, 8 Black, 4 White
Row 4: 5 White, 7 Black, 19 White, 7 Black, 5 White
Row 3
Row 2
Row 1
4-2 Using Graphics