Thick, sticky, or jelly-like CIJ ink is a red flag. Learn what causes it and how to fix it.
What causes thickened ink?
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Evaporation: fluid stored unsealed or in heat
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Cross-contamination: incompatible fluids mixed
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Expired ink: resin separation and breakdown
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Improper storage: high humidity or temperature swings
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Moisture ingress: water absorption through vented tanks
Symptoms to look for
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Ink won’t flow or start
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Bubbles or clumps in return line
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Frequent nozzle blockage
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Viscosity alarms from VMS
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Gummy residue on restrictor or filters
Fix it quickly
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Replace ink with fresh, unopened fluid
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Run Clean Ink System
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Replace restrictor and all filters
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Check seals on tanks and storage areas