Epson 4720 Print Head
DTF Survival Companion
The Epson 4720 head is popular in budget and mid-range DTF printers because it prints exceptionally well and costs less than industrial heads like the Epson I3200. Unfortunately, DTF white ink behaves like wet cement mixed with toddler chaos. If you ignore maintenance for two days, the printer starts plotting revenge.
BIGGEST ENEMIES OF YOUR PRINT HEAD
These six factors will destroy your nozzles fast. Avoid them at all costs!
White Ink Sediment
Settles rapidly into hard sludge
Dry Nozzles
Clogged open-air ink path
Dust/Powder
Hot-melt powder contamination
Excessive Cleaning
Pumping cycles wear out caps
Low Humidity
Accelerates drying & static
Long Idle Time
Static ink becomes geology
Daily Interactive Maintenance Checklist
Check off tasks as you complete them to track your print-head health status.
Before Printing Each Day
During Printing Phase
Low humidity increases static electrical charges, leading to bad ink spray patterns and extreme nozzle drying.
End-Of-Day Shutdown
Weekly Maintenance Steps
ENCODER STRIP CLEANING
Clean gently using a lint-free cloth and proper alcohol cleaning solution. Avoid using too much pressure.
INK LINE INSPECTION
Check all supply lines for: Air bubbles, heavy white ink sediment settled on tubes, and sharp kinks.
Air leaks usually originate from: Bad capping station seal, loose damper connections, or a weakened pump.
DAMPER CHECKS
Replace the dampers immediately if you notice: Unstable ink delivery flow, large pockets of visible air, or weak/discolored white layers.
Monthly Deep Maintenance
SYSTEM DEEP CLEAN
Perform manual capping station scrub, flush printhead lines with syringe/flushing solution, and run direct tube inspections.
CARRIAGE RAIL LUBRICATION
Apply thin layer of light sewing machine oil or recommended technician-grade grease on carriage guide rails.