Chapter 8: Horizontal Control Commands82
Uni-directional Printing Off ASCII: ESC U 0
Dec: 27 85 0
Hex: 1B 55 00
ASCII: ESC U 0
Dec: 27 85 0
Hex: 1B 55 00
ASCII: ESC =
Dec: 27 61
Hex: 1B 3D
Print Uni-directional
for One Line Only
Not applicable
ASCII: ESC <
Dec: 27 60
Hex: 1B 3C
Not applicable
Your printer is designed to maximize speed by printing alternately from the left and right
(bi-directional printing), rather than moving the printhead back to the left margin so that each
line prints from left to right (uni-directional printing). Use uni-directional printing when precise
vertical alignment from line to line is critical.
You can also select uni-directional graphics printing in the printer menu (see "Menu Mode" in
your printer manual).
Incremental Printing Commands (IBM/E/ML)
⻬ ML320 Turbo, ML321 Turbo
⻬ ML390 Turbo, ML391 Turbo
Function ASCII Dec Hex
Incremental Printing On ESC i 1 27 105 1 1B 69 01
Incremental Printing Off ESC i 0 27 105 0 1B 69 00
The Incremental Printing On command causes the printer to print each individual character as
it is received, as opposed to storing information and printing a line at a time. If you have a
software application that passes information to the printer one keystroke at a time, this
command allows your printer to function as a typewriter.
The print location of the next character is indicated by a red “M” to the left of the printhead on
the ribbon shield.
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