Citizen iDP-3550 User Manual page 85

ESC "K" n1 <0> m1 m2 ...
[Function] Specifying the 8-dot standard density bit image
[Code] <1B>H <4B>H n1 <00>H m1 m2 ...
[Range] 1 n1 180/2 (DP654 mechanism)
1 n1 200/2 (DP657 mechanism)
[Outline] This command prints the bit image by the number of data specified with n1. Printing will be
unidirectional. The surplus data exceeding the printable quantity in one line will be ignored.
The printer will automatically return to the character mode after printing the bit image.
(Graphic Type)