
Text and Fonts
Overview
118
P1026208-001 Rev. B Software Integrator Guide 10/29/2010
Later, lower case letters were added to some resident font character sets in Zebra
printers. The lower-case font characters, such as, ‘g’ or ‘y’ have descenders. A descender
is the portion of the font character that extends below the font’s baseline. The font dot grid
for this font becomes a 9 x 5 bitmapped font when upper and lower case fonts are
combined.
As Zebra printers evolved to support more languages, the printers expanded the size of
the font character sets to include characters with ‘ascenders’ above the character (Ë, Ã,
Ă,Ĉ, etc.). These characters where introduced into the existing font set’s font dot grid by
shrinking the upper-case font character with ascenders to fit between the top of the bitmap
font grid and the baseline. This guaranteed backward compatibility with older label and
receipt designs but used slightly distorted font characters with ‘ascenders.
For the best quality font character, each bitmap font set needed to be pre-rasterized to the
exact size and stored in the printer for quick recall. Zebra ZPL printers now include 15
resident bitmap fonts of varying sizes and styles (san serif and OCR) with the ability to
scale these fonts 2 to 10 times their exact height or their width as measured in dots.
Figure 8-1 • Measuring Zebra Bitmap Fonts
Comentarios a estos manuales