Citizen Systems iDP-3423 - Manual (Page 115)

iDP-3420/3421/3423 User’s Manual
115 CITIZEN
ESC "U" n
[Function] Specifying/Canceling the Unidirectional print mode
[Code] <1B>H <55>H
[Range] 0 £ n £ 255
[Outline] This command selects/deselects unidirectional print. n is valid only for the least
significant bit.
n Function
0 Deselects
1 Selects
[Caution] If unidirectional print is selected, the printer will print from the left to the right.
When you want to prevent horizontal shear in printing at high accuracy, specify
unidirectional print with this command. (Double height print, etc.)