UBI EasyCoder 401 ? Technical Manual CONTENTS

UBI EasyCoder 401 – Technical Manual
PRINTING PRINCIPLES, cont'd.
Dot Size The basis for all measures and positioning in the UBI Fingerprint
programming language is the size of printhead dots. For example,
in an 8 dots/mm printhead, each dot has a nominal size of 0.125 mm
(4.9 mils). This means that a heated dot under standardized conditions
will produce a black spot which has a diameter of 0.125 mm.
Depending on dot temperature, exposure time, paper and ribbon
characteristics etc., the spot may actually be somewhat smaller
(weak print) or larger (black print), but that does not affect the
calculation of distances, sizes and positions.
The 8 dots/mm (203.2 dpi) printhead contains 832 dots, which gives
a maximum print width of 104 mm (4.095").
The same unit of measure (dots) can be used both across and along
the paper feed direction.
Conversion Table
Density: 8 dots/mm (203.2 dpi)
Dot size (mm): 0.125
Dot size (mils): 4.92
Dot size (inches): 0.00492
1 mm: 8 dots
1 inch: 203.2 dots
1/16 inch: 12.7 dots
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