A795 User Guide: Programming Supplement
Chapter 4: Programming commands
66
Select double-density graphics
ASCII
ESC Y n1 n2 d1 ... dn
Hexadecimal
1B 59 n1 n2 d1 ... dn
Decimal
27 89 n1 n2 d1 ... dn
Value of n:
Value of n (8-dot single density mode)
Value of d
n1 + (256 x n2)
Number of bytes of data
(printed down, then across)
Enters one line of 8-dot double-density graphics into the
print buffer. Any print command is required to print the
line, after which the printer returns to normal processing
mode. Double-density mode allows 0-576 dot columns.
The number of bytes sent is represented by the formulas in
the table.
Each bit corresponds to one horizontal dot. Compare to set
bit image mode (1B 2A, m=1) earlier in this document.
Related information
In TM-T88 emulation, this command is unrecognized and
the parameters are put into the print buffer.
Select the current logo
ASCII
GS # n
Hexadecimal
1D 23 n
Decimal
29 35 n
Range of n:
0 – 255
Default:
0
Selects a color or monochrome logo to be defined or
printed. The active logo n remains in use until this
command is sent again with a different logo n.
When this command precedes a logo definition, that
definition is stored in flash memory as logo n. If there is
already a different definition in flash memory for logo n,
the first is inactivated and the new definition is used. The
inactive definition is not erased from flash and continues
to take up space in flash memory.
When this command precedes a logo print command and n
is different from the previously active logo selected, the
printer retrieves the logo definition for n from flash
memory and prints it. If there is no definition for logo n,
then no logo is printed.
In the case of a previously existing application that expects
only one possible logo, the printer will not receive the
select current logo (1D 23 n) command. In this case, the
printer assigns 0 as the active logo identifier. It
automatically stores any new logo definition in flash
memory as logo 0, inactivating any previous logo 0
definition. If the flash memory space available for logos
fills up with inactive logo 0 definitions, the firmware
erases the old definitions at the next power cycle. This is
the only case in which the printer erases flash memory
without an application command.
In the case of a new application using multiple logos, the
select current logo (1D 23 n) command is used. After that,
the printer no longer automatically erases the logo
definition flash memory page when it fills with multiple
definitions. A new application using multiple logos,
writing a user-defined character set into flash memory, or
both, is responsible for erasing the logo and user-defined
character set flash memory page when the logo area is full
or before a new character set is defined.
Related information
This command is recognized only in A795 native mode.
In A793 and TM-T88 emulations, the parameters are put
into the print buffer.
