Programming Codes iTherm
®
280 Programmer’s Guide
28-04430 Rev K Page 233
Function Define Single User-Defined Bit-Image
ASCII GS * x y d
1
… d(x x y x 8)
Hexadecimal 1DH 2AH x y d
1
… d(x x y x 8)
Decimal <29> <42> x y d
1
… d(x x y x 8)
Range 1 x 255
1 y 48
0 d 255
Description The GS * x y d
1
… d(x x y x 8) command defines a single downloaded bit-image
using the number of dots specified by x and y in the RAM buffer area (volatile
memory). The number of dots in the horizontal direction is x x 8. The number of
dots in the vertical direction is y x 8. If (x x y x 8) exceeds the size of the buffer,
the image is truncated. d indicates bit-image data and specifies a bit printed to
one and not printed to zero. After a downloaded bit-image is defined, it may be
saved to the nonvolatile flash storage buffer using the ESC ‗ command where it
remains indefinitely. Otherwise, the image remains in the RAM buffer where it is
available until ESC @ or ESC & is executed; the power is turned off; or the
printer is reset. A representation of the format of a downloaded bit-image is
depicted below.
Column one
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