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SYMPTOM
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POSSIBLE CAUSE
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CORRECTIVE ACTION
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Bar Growth
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Print speed set too high
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Reduce print speed
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Old or inferior ribbon or media
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Use fresh (not older than one year) ribbon; use premium grade consumables
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Overburn/Underburn
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Adjust printhead energy setting
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Printhead energy setting too high or too low
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Adjust to optimize average bar growth (visually or with verifier)
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Insufficient Print Contrast
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Printhead overheats
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Reduce print speed or lower printhead energy setting
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Signal (PCS) or Light Image
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Faded image
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Create new label on laminated, protective stock; increase or lower printhead energy setting
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Ribbon and media incompatibility
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Consult supplier for compatible ribbon/media combination
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Printer set on direct thermal mode
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Set printer to thermal transfer mode
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Unable to Sustain Proper Wide/Narrow Ratio
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Underburn (not enough ribbon transfer
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Increase printhead energy setting or use a ribbon with a higher sensitivity (refers to ribbons requiring less energy)
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Overburn (too much ribbon transfer)
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Lower printhead energy setting or use a ribbon with a lower sensitivity (refers to ribbons requiring more energy)
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Streaks or “Dead Spots” on labels
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Wrinkled ribbon
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Check ribbon path; increase tension; increase print speed; lower printhead energy setting
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Vendor misapplied stock coating
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Replace media
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Elements have dirt on them
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Clean or replace printhead
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Pits and/or Voids, Inconsistent Image Quality
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Dirty printhead
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Clean printhead with Isopropyl Alcohol or specialty cleaning solution
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Dots missing or worn on printhead
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Replace printhead
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Ink picking
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Lower printhead energy setting
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Poor Edge Definition
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Printing too fast
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Slow print speed; do not rotate symbol
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Ribbon and media incompatible
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Consult supplier for compatible ribbon/media combination
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Printer Cannot Calibrate
Die-Cut Labels
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Dirty sensor
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Clean sensor with compressed air or IPA
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Printer set in continuous mode
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Change to labels mode
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Die-cut label length under minimum length for specific printer model
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Go to a “two-up” format
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Sensor may not be aligned with gap in media
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Move sensor
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Printer doesn’t stop when out of ribbon
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Dirty Sensor
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Clean sensor with compressed air or IPA
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Ribbon Breaking
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Printhead energy set too high
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Reduce printhead energy setting
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Printhead pressure set too high
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Lower printhead pressure
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Printer set on direct thermal mode
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Set printer to thermal transfer mode
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Unwind tension set too high
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Lower unwind tension
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Backcoat not there- insufficient
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Replace ribbon product
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Ribbon Slippage
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Ribbon moving slower than label due to incorrect ribbon wind, glossy stock, or unwind tension too high
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Change label stock or ribbon, or adjust unwind tension
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Rewind tension too low
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Increase rewind tension
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Printing Voids
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Dust on label
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Remove dust with compressed air or place static tinsel across label unwind
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Uneven facestock surface
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Select different stock-topcoat or print-treated
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Incompatible combination
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Select new ribbon or stock
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Dirty printhead/ burned out elements
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Clean printhead regularly
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Printhead misalignment
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Check for alignment related defects with a well-performing ribbon/receiver combo, realign if necessary
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Ribbon Wrinkling
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Printhead misaligned
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Realign printhead
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Guide bar misaligned
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Realign guide bar
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Incorrect printhead pressure
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Adjust pressure
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Incorrect printhead spring tension
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Adjust unwind/rewind tension
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Printhead energy setting too high
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Lower printhead energy setting
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Ribbon more narrow than label
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Use ribbon at least as wide as label
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Rewind tension is greater than unwind tension
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Adjust tension (unwind tension should be greater than rewind)
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