TH320/TH420
Programmers Guide
47
To downloaded BMP file to save it as a logo, send the hexadecimal code 1B followed by the whole
BMP file.
The printer decodes the BMP file header and will save the image data after checking important
parameters, such as:
Width,
Height,
Number of colors (only monochrome images are accepted)
BMPs and bit images are definable for the receipt station. However, there is no longer an automatic
erasure whenever the user downloads a character set (as happened previously) as well as in the case
where the current logo was never set > 0, (the automatic erasure if user flash memory had filled up
with inactive logo 0 definitions upon next power cycle). Warnings about the effect of running out of
defined logo space during a download apply (i.e. the command is ignored). The application is required
to manage user data space, downloaded font space, and logo space.
After downloading a logo to the printer, wait 100 ms to allow the printer time to write the logo to flash.
The downloaded BMP file can be printed by using the print downloaded bit image (1D 2F m)
command.
Exceptions
This command is valid only for the receipt station. This command is valid only for monochrome logos.
Related information
Microsoft BMP bitmap file format.
See Select the Current Logo (1D 23 xx) for additional information.
See Download Logo Image (1D 84) for information concerning color logos.
Select bit image mode
ASCII
ESC * m n 1 n 2 d 1 ... d n
Hexadecimal
1B 2A m n 1 n 2 d 1 ... d n
Decimal
27 42 m n 1 n 2 d 1 ... d n
Value of m
Receipt Station
Value of m
Mode
No. of dots (vertical)
No. of dots (horizontal)
0
8-Dotsingle-density
8 (68 DPI)
0–288 (101DPI)
1
8-Dotdouble-density
8 (68 DPI)
0–576 (203 DPI)
32
24-Dotsingle-density
24 (203 DPI)
0–288 (101DPI)
33
24-Dotdouble-density
24 (203 DPI)
0–576 (203 DPI)
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