A-4

Fonts and Graphics
The printer contains 21 resident bitmap fonts and three outline
fonts. You can use font ID 3 through 6 and 8 through 19 to
download user-defined fonts. See Appendix C, “Character Sets,”
for complete tables of all available fonts and their character sets.
Media Specifications
Roll 1,800 inches (46 m)
Label Length 0.38 inch (10 mm) to 8.0 inches (203mm)
Web Width 1.12 inches minimum (28 mm)
4.65 inches maximum (118 mm)
Thickness 0.0059 inch minimum (0.15 mm)
0.010 inch maximum (0.25 mm)
Roll Inner Diameter 1.0 inch (25 mm)
Roll Outer Diameter 5 inches maximum (127 mm)
Memory
Base 512K of DRAM
Optional 1 or 4MB flash RAM modules
Printhead
Printed dot size 0.005 inch square (0.13 mm)
Width 4.1 inches maximum (104 mm)
Resolution 203 dots per inch (8 dots per mm)
Number of elements 832 per printhead
“X” dimensions 10 mil to 50 mil (0.25 mm to 1.27 mm); 5
mil (0.13 mm) in dra
g
printin
g
(specified
media only)
Printing Method
The 7421 printer is capable of direct thermal (DT) printing or
optional thermal transfer (TTR) printing using thermal transfer
ribbon.