HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

23-86 The Character Group EN
TD, Transparent Data
This command specifies whether control characters perform their
associated function or print as characters when labeling. Use the TD
command to print characters that function only as control characters
in normal mode.
TD mode[;]
or
TD [;]
The printer interprets the parameters as follows:
z No Parameters– Defaults the labeling mode to normal.
Equivalent to (TD0).
z Mode– Selects the normal or transparent data mode for labeling.
z 0 — Normal.Control codes with an associated functionality
perform their function and do not print. Refer to the symbol set
tables in Appendix B of the PCL 5 Comparison Guide.
z 1 — Transparent.All characters print and perform no other
function (except the currently defined label terminator, which
terminates the label). The printer prints a space for non-printing
or undefined characters.
Transparent data mode must be enabled to access printable
characters which have character codes with an associated
functionality in normal mode. For example, the left arrow in the PC-8
symbol set has a character code of 27. In normal mode, a character
code of 27 is interpreted as an escape character (
E
C
); in transparent
data mode, a character code of 27 prints a left arrow.
Table 23-54
Parameter Format Functional Range Default
mode clamped integer 0 or 1 0 (normal)