CITIZEN CBM1000II - Manual (Page 65)

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GS B n
[Function] Specifying/Canceling the black/white inverted printing
[Code] <1D>H<42>H
[Range] 0 n 255
[Outline] This command specifies or cancels the black/white inverted
printing.
• “n” is valid only for the lowest bit (n0).
• Control by the lowest bit (n0) is shown as follows:
n0 Function
0 The black/white inverted printing is canceled.
1 The black/white inverted printing is specified.
[Caution] • Number “n” is only valid in the lowest bit.
• The black/white inversion works on internal and downloaded
characters.
• The black/white inversion works also on the right spacing of
characters defined by ESC SP.
• This command does not affect the bit image, downloaded bit
image, bar code, HRI characters, or the skip area specified by
HT, ESC $, or ESC \.
• This command does not affect the space between lines.
• Black/white inversion specification takes precedence over
underline specification. Underline printing specified is,
therefore, nullified if black/white inversion is specified; the
underline setting, however, remains unchanged.
[Default] n = 0