TransAct Technologies ITHERM 280 - Manual (Page 267)

iTherm ® 280 Programmer’s Guide ITherm® 280 Unicode and Fonts
28-07764 Rev C Page 265
Bitmap Fonts
It is possible to use bitmap fonts with the ITherm 280 Printer. Bitmap fonts are fixed pitch and
are not scalable. They will only function as legacy fonts. The printer is optionally supplied with
4 legacy bitmap fonts. They are in a 10x24, 12x24 draft font format and a 16x24 near letter
quality format. They are defined as follows:
BMFont0 = chr10x24.bft 10 x 24 draft font with typical spacing of 16 characters per inch
BMFont1 = chr12x24.bft 12 x 24 draft font with typical spacing of 14 characters per inch
BMFont2 = chr16x24.bft 16 x 24 NLQ font with typical spacing of 12 characters per inch
BMFont4 = ocr16x24.bft 16 x 24 OCR font with typical spacing of 12 characters per inch
It is possible to define a custom bitmap font. Transact supports a bitmap font compiler that will
convert a bitmap font picture file into a compressed bitmap file that may be loaded into the
printer as a bitmap (.bft) font file.
The input to the program is a text file in a predefined format consisting of a font description and
then character definitions consisting of the character ID and then the character definition. The
format is as follows: (Note lines preceded with # characters are comments.
# 11 by 24 font with a base line at 22
# F=X is not used in Thermal Products
W=11 H=24 B=22 F=0
; N=0000 U=0000 NULL
01
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21 ...........
22 ...........
23 ...........
24 ...........
; N=0001 U=0020 SPACE
01
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02 ...........