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LTPH245 Datasheet(PDF) 34 Page - Seiko Instruments Inc |
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LTPH245 Datasheet(HTML) 34 Page - Seiko Instruments Inc |
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34 / 64 page  3-21 3.6.5 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 the preceding activation start to the current activation start) which conforms to equation (7) to reserve the pause time. Equation (7): W > t + 0.5(ms) W : Activation period of 1-dot line (ms) 3.6.6 Head Activation Pulse Term Coefficient Make adjustments using the head activation pulse term coefficient (equal motor drive frequency) as the printing density changes by the printing speed. According to equations (8), calculate compensation coefficient C of the heat pulse. Equation (8): C = 1 - 2.6/(5.0 + w) w = 2000 / motor drive frequency |
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