CHAPTER 5
PRINT DRIVE METHOD
5.1 MOTOR AND THERMAL HEAD DRIVE METHOD
The motor and the thermal head must be driven at the same time for printing.
The printer uses the thermal head with heat elements which size is a half-dot size of the feed direction. One
dot is, therefore, composed of two of the half dots. The motor feeds the thermal paper for one dot line with four
steps. In order to print one dot line, feed the thermal paper for four steps and activate the thermal head in
every two step.
Figure 5-1 shows a divided print timing chart.
1st dot line shows a timing chart for using three divisions printing.
2nd dot line shows a timing chart for using batch printing.
4th step
3rd step
2nd step
1st step
Start
Pause
PH1
PH2
PH3
PH4
CLK
DI
LAT
DST
1st half dot line
2nd half dot line
1st dot line
4th step
3rd step
2nd step
1st step
1st half dot line
2nd half dot line
2nd dot line
Figure 5-1 Divided Print Timing Chart Sample
5-1
