Likely Causes

1. Settled white ink / poor circulation: Heavy pigments settle quickly.

2. Clogged dampers/nozzles: Particulate accumulates, especially after idle.

3. Air in ink lines: Air bubbles can interrupt ink flow to the printhead.

4. Dried ink on capping station: Poor seal allows nozzles to dry out.

Quick Checks

• Shake white ink bottles (per OEM guidance).
• Run circulation if printer supports it.
• Print nozzle check; perform targeted clean.
• Check capping station for debris and ensure a good seal.
• Inspect ink lines for any visible air bubbles.

Step-by-Step Fix

1. Agitate white ink; purge lines — Resuspends pigment and refreshes feed.

2. Targeted clean on affected channels — Clears micro-clogs.

3. Perform a head soak or use a flushing cartridge — Dissolves stubborn clogs.

4. Clean capping station and wiper blade — Ensures a proper seal to prevent drying.

5. Bleed air from dampers if necessary — Removes air that can cause dropouts.