The cbBitMapFontDescriptor and cbBitMapCharDescriptor controls specify the
size in bytes of the font, and character descriptors for a bitmapped font.
HP LaserJet IIP
For the HP LaserJet IIP printer, the font descriptor requires 64 bytes;
therefore the cbBitMapFontDescriptor box contains the value 64. The
character descriptor for each symbol in the font requires 16 bytes;
therefore, the cbBitMapCharDescriptor contains the value 16.