Zebra Technologies TTP 7030 - Manual (Page 64)

Programming
Font Loading 64
P1003636-002 TTP 7030™ Technical Manual 10/05/2009
Font Loading
The printer can store 8 fonts in its flash PROM. The memory available for fonts is printed on
the self-test printout. The character size is fixed
3
, so you must load one font file for each
character size you require. The fonts are given font numbers when they are loaded into the
printer. The first font is assigned number 0 and the next font 1 etc. up to font 7. Parameter p14
“Font Selection” will determine what font to use when no font selection command has been
received (see
Default Parameter Settings on page 69 ).
You cannot erase a single font, but must erase font 4-7 with command <ESC>&D
,
or all eight
fonts with <ESC>&C, then reload the fonts you wanted to keep.
Windows software for font generation and management is available on the Zebra web site. If
you need to load fonts in a non-Windows environment, use the <ESC>&<NUL> command.
The time required for processing the font data that is loaded is typically 15–20 seconds per
font, excluding transfer time. During this time, any data sent to the printer will be lost.
File Format
A font consists of a header describing the font, then data for every character in the font. The
header has to be downloaded even if the font consists of a single character only. Below is a
description of the font header.
This will be printed on status printouts. (E.g. Swiss 10 cpi.)
Char_matrix table: 256 records, each containing 3 bytes.
3 byte Char_width (pixels) + Char_Ystart(pixels) + Char_Yheight(pixels)
3. Multiple height, and width commands can be used on all fonts.
Note • The font processing ends with a reset. The presenter motor runs momentarily to
indicate that the printer is ready to be used.
Caution • Loading to the flash PROM will erase the RAM completely since the RAM is
used during the loading process. Any print data residing in RAM will thus be lost.
1 byte Reserved Should always be 0 (zero)
1 byte Reserved Should always be 0 (zero)
1 byte Char. width (X) The number of bytes required for the width of one character,
usually 2 or 3. Range 1 to 8.
1 byte Character pitch The maximum width of one character in the set. This value is
used for tab position calculation. Range 1 to 255.
1 byte Char. height (Y) The maximum height of one character matrix measured in
pixels. This is also the minimum line spacing for this character
set.
27 byte Font name String of characters used to identify the character set.