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P1002902-002 TTP 2000 Technical Manual 09/14/2009
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. (For example, Swiss 10 cpi.)
Char_matrix table: 256 records, each containing 3 bytes.
3 byte Char_width (pixels) + Char_Ystart(pixels) + Char_Yheight(pixels)
Char_bitmap data: Bitmap data for all characters that are to be defined.
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.
This field can also contain the name of the code page the font is generated with.
This is done with NUL separator between the font name and the code page name.
Then, the entire field should be padded with NUL up to 27 bytes.
Example:
Arial 8<0>Western<0><0><0><0><0><0><0><0><0><0><0><0>
A
Char_Ystart
Baseline
Char_sizeX
Char_Yheight
Char_sizeY
Char_width
A
Char_pitch
Char_width
W
Char_pitch
Char_width
g
Char_pitch
Char_width