Epson TM-T90 Printer User Manual


 
CONFIDENTIAL
Paper roll Bar code commands GS k
Ver. 10.01 p. 347
The bar code is not affected by print mode (emphasized, underline, or 90° clockwise-rotated), except for
upside-down print mode.
After bar code printing, the print position moves to the left end of the print area. The printer enters the
status of print position at the head of a line or no data exists in the print buffer.
The values of
m
from 0 to 6 in (A) and from 65 to 71 in (B) select the same bar code system, respectively.
The printing results are the same.
This command specifies
m
= 0 to 6 and ends with a
NUL
code.
When an odd number of data is processed for ITF bar code system (
m
= 5), the printer ignores the last
received data.
The printer processes
n
bytes from the next data as bar code data by this command specifying
m
= 65 to 71.
Print area does not include quiet zone (left/right margin) of bar code. Make sure to secure the quiet zone,
using this command.
[Notes for UPC-A (
m
= 0, 65) process]
Modular check character (1 character) is processed as follows:
Automatically added when processing data is 11 byte.
The 12th byte data is processed as a modular check character when processing data is 12 byte. In this
case, modular check character is not checked.
Left guard bar/center bar/right guard bar are added automatically.
[Notes for UPC-E (
m
= 66) process]
The first data (
d1
) is processed as number system character (NSC) so 0 must be specified.
If
n
is out of the specified range or if
n
is an odd number when ITF bar code system (
m
= 70) is selected,
this command is canceled and the following data is processed as normal data.
Modular check character (1 character) is processed as follows:
Automatically added when processing data is 11 byte.
The 12th byte data is processed as a modular check character when processing data is 12 byte. In this
case, modular check character is not checked.