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Dimatix DMP-2800 (Fluid Requirements (Viscosity: 10 - 12Cp (or cps),…
Dimatix DMP-2800
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Screens
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Waveform Editor
Duration Scaler: Scale entire waveform pulse width at once, use for different density fluids
Maximum Jetting Frequency: Set to 80kHz for characterisation, dictates scale for Drop Watcher Jetting Frequency Maximum
Non-jetting waveform: For all inactive nozzles, pulse signal for Tickle Control
Basics, Set-up and Installation
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Test Pattern
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Set cartridge to 90°, hold CTRL and press print
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Pattern Printing
Leader Bar: Vertical bar to the left of the pattern, used to pre-jet the nozzles to keep drop velocity uniform
Drop Spacing: 1µm adjustment possible, but always rounded to 5µm
Drop Watcher
Movie Mode
Drop Viewing Speed: Sweep rate of the delay of the strobe (makes drops appear to form faster/slower)
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Jetting Control
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Strobe Delay: Time after drop ejection that strobe LED flashes to capture the drop image (has effect of freezing the droplet in flight)
Align the 0µm scale with the nozzles, then drop velocity is distance/graduations travelled / strobe delay
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Waveform Basics
Tips
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Duration of segment 1 and slew rate and duration of segment 2 has a strong influence on drop formation
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Sections
1: Low voltage to force fluid into chamber from reservoir, piezoelectric layer increases available volume in cartridge for this to occur
2: Slope to provide energy for ejection followed by high voltage hold period, piezoelectric reduces volume in chamber
3: Mid-range voltage to prevent print head sucking air back in, piezoelectric layer brought back to zero (slightly deformed) position
4: Slightly lower mid-range voltage, piezoelectric returns to initial, slightly deformed state