Seiko 201 Especificações descarregar pdf (Página 21)

2.6.4 Control of Printing Pulse Width

Superior print quality can be maintained by controlling the print pulse width by the print pulse width

control circuit. This is an oscillating circuit in which the frequency varies depending upon the voltage

and ambient temperature, and provides a specified pulse width by counting a certain number of pulses

with the CPU.

The leading edge of the pulse is synchronized with the timing signal. Control the leading edge of the

pulse by the pulse width control circuit to obtain the rated applied energy.

0.8t

Do not exceed maximum specified energy.

Head drive signal

Timing signal

Figure 2-9 Pulse Width Control

• Avoid continuous energizing.

• When driving the same dot successively, reduce the applied energy to 80% of the rated applied

energy and slow down the rise of the head driving signal.

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