LTPH245 데이터 시트보기 (PDF) - Seiko Instruments Inc

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LTPH245

LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE

Seiko Instruments Inc 

3.4.2 Motor Timing

Refer to the timing chart in Figure 3-5 when designing the control circuit and/or software for starting and

stopping the motor. Also take note of the following precautions:

Precautions for Designing the Motor Control Circuit and Software

(1) Stop step

To stop the motor, excite for a single step period with a phase that is the same as the final one

in the printing step.

(2) Pause state

In the pause state, do not excite the step motor to prevent the motor from overheating. Even

when the step motor is not excited, it maintains a holding force to prevent paper from sliding.

(3) Start step

To restart the motor from the stop step, shift the motor into the printing sequence.

To restart the motor from the pause (no excitation) state, shift the motor into the printing

sequence after outputting a single step of a phase that is the same as that of the stop step.

1 DOT LINE

H

PH1

L

H

PH2

L

H

PH3

L

H

PH4

L

PRINT STEP

STOP PAUSE START PRINT STEP

STEP STATE STEP

Figure 3-5 Motor Start/Stop Timing

3-8

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