User`s manual

BD2-3880/3890 User’s Manual
20
9. PRINTER MECHANISM CONTROL SYSTEM
9.1 Thermal Head Control System
The MLT-388/MLT-389 (Line thermal printer) to be driven by this control board has a 576 dots/
line head divided into 9 blocks of 64 dots each. When actually driving the head, you can select
either Fixed Division Number system, which drives the head, always dividing it into 9 blocks or
Variable Division Number system which collectively drives several blocks at the time according
to the number of activated head dots.
For selection by function selection, refer to “4. Function Selection”.
For selection by command, refer to attached “BD2-38XX Command Reference”.
9.1.1 Fixed Division Number System
This system always drives each block in the same sequence.
CAUTION: For a stepping motor driving method, see “9.2 Motor Drive”.
9.1.2 Variable Division Number System
This system counts the number of printing dots for each block of the printing dot line and drives
the blocks collective in such a manner not to exceed the maximum number of driving dots (64
dots).
1st Block
64 Dots
2nd Block
64 Dots
3rd Block
64 Dots
4th Block
64 Dots 5th Block
64 Dots
6th Block
64 Dots
7th Block
64 Dots
8th Block
64 Dots
9th Block
64 Dots
1st Step of Motor
2nd Step of Motor
1 Dot Line
1st Block
64 Dots
2nd Block
64 Dots
3rd Block
64 Dots
4th Block
64 Dots
5th Block
64 Dots
6th Block
64 Dots
7th Block
64 Dots
8th Block
64 Dots
9th Block
64 Dots
1st Step of Motor
2nd Step of Motor
1 Dot Line