Download Dither Pattern (Esc B) - Epson ES-1000C Reference Manual

ESC B and other commands
The scanner ignores the image processing you select with the ESC B
command if you have already selected 3 bits/color/pixel or higher
with the ESC D command.

2. Download dither pattern (ESC b)

This command defines the dither pattern that is selected when you use
ESC B to select user-defined dither patterns A and B. You can select
square patterns with sizes of 4 4, 8 8, and 16 16. You define the
dither pattern by assigning a threshold data value to each pattern
member. Since image data has a value from 0 to 256, you can set the
threshold value from 0 to 256.
The threshold values you define with this command remain in effect
until you turn off the scanner or redefine new values. The ESC @
(Initialize the scanner) command does not clear these values.
Command Usage
2-15