Likely Causes

1. Insufficient agitation/recirculation: Heavy pigment settles quickly.

2. Filters/dampers loading with pigment: Flow restriction and uneven feed.

3. Expired or overheated ink: Stability and dispersion degrade.

4. Long idle time without capping/flush: Settling and dry-in at head.

Quick Checks

• Agitate bottles per spec.
• Run recirculation; purge 10–20ml.

Step-by-Step Fix

1. Agitate bottles and run recirc cycle — Re-suspends pigment.

2. Replace white filters/dampers — Restores consistent flow and particle capture.

3. Purge lines and do targeted cleans — Clears micro-settle at head.

4. Discard expired ink; restock with fresh — Prevents repeat instability.

5. Enable timed agitation schedules — Maintains suspension during idle.