2-22
2.6.5 Determination of Activation Pause Time and Activation Pulse Period
Dot lines may be activated in succession to the same thermal dot in order to protect thermal head
elements. Determine the activation period (the time from preceding activation start to current activation
start) which conforms to equation (7) to reserve the pause time.
Equation 7:
W>
ts + tm + 0.5(ms)
W : Activation period of 1-dot line (ms)
2.6.6 Head Activation Pulse Term Coefficient
Adjust using the head activation pulse term coefficient (equal motor drive frequency) because the printing
density changes by printing speed.
According to equations (8) and (9), calculate compensation coefficient Cm of the main heat pulse and
compensation coefficient Cs of the preheat pulse. When the preline history control function is not needed,
use Cm + Cs of equations (8) and (9) as the respective compensation coefficient.
Equation 8:
Cm = 1 - 3.5/(3.5 + W)
Cs = 1 - Cm (When Cm is 0.75 or more)
Cs = 0.25 (When Cm is less than 0.75)
Equation 9:
W=2000 / motor drive frequency
Содержание LTP3445
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