Sooner or later every wide format printer owner faces the same decision: keep cleaning, or buy a new printhead. Guessing wrong is expensive in both directions. Here is how professionals make the call.
Signs Your Printhead Is Failing (Not Just Clogged)
- Permanent missing nozzles after flushing and a fresh damper. Clogs clear; failed channels do not.
- Deflection and banding that shifts position between prints – a sign of a damaged nozzle plate.
- Ink leaking around the head or dripping onto the media. Internal seals have failed; this one is urgent, because leaked ink can also damage the head cable.
- Electrical errors such as head temperature or head drive errors on the control panel.
- Physical damage – a scratch or dent on the nozzle plate, usually from media strikes or head crashes.
- Gradual colour shift or weak density in one channel that does not respond to cleaning.
A useful rule: if a flush plus a new damper and cap top does not recover the nozzles, stop spending on cleaning liquid and price a replacement head.
Identify Your Printhead First
Most wide format printers use one of a handful of Epson, Ricoh or Konica Minolta heads. Before ordering, confirm the printer model, the head part number stamped on the head body, and the number of channels (4, 8 or more). Many “identical looking” heads are not interchangeable, and the version matters.
| Head | Type | Common Machines |
|---|---|---|
| Epson DX5 | 8-channel piezo, 1,440 nozzles | Mimaki JV33 / JV5, Mutoh ValueJet 1604 |
| Epson DX6 | 8-channel piezo, 1,440 nozzles | Roland VS / RA / RE / RF / XF / XR series, Mutoh ValueJet 1626UH |
| Epson DX7 | 8-channel piezo, 1,440 nozzles | Mimaki JV300 / JV150 / CJV300 / CJV150, Mutoh ValueJet 1624 |
| Epson i3200 | 4-channel (A1 / E1), 8-channel (U1) | Newer eco-solvent, DTF and UV printers |
| Ricoh Gen5 | 8-channel piezo | Ricoh Pro and many UV flatbed printers |
| Konica KM512i | 512-nozzle piezo | Solvent and UV industrial printers |
| Epson XP600 / TX800 | Entry-level piezo | DTF and entry-level eco-solvent printers |
Head specifications and model compatibility vary by printer configuration and firmware version. Always confirm the part number stamped on the head or listed in the service manual before ordering – a head that fits the carriage but not the head board will not fire.
Before You Replace: Three Cheap Checks
- New damper. Air in the line mimics a dead head.
- Cap top and wiper. A leaking cap dries the head out and hides good nozzles.
- Head cable and connector. Oxidised contacts cause missing channels that look like head failure.
Replacement Procedure
- Power off and unplug. Discharge static from yourself before touching the head – static is a real killer of piezo heads.
- Move the carriage to the maintenance position using the printer menu, then lock it if the machine has a carriage lock.
- Drain the ink. Clamp the ink lines or draw ink back with a syringe so it does not spill over the electronics.
- Photograph everything before disconnecting cables. Cable routing and connector orientation are the most common reassembly errors.
- Remove the old head, keeping the screws in order. Note any shims or alignment plates.
- Fit the new head gently. Never touch the nozzle plate or squeeze the head body.
- Reconnect, fit new dampers, and prime the lines slowly until ink reaches the head without air bubbles.
- Run a nozzle check, then a normal cleaning cycle, then re-check. Perform any head rank / head ID or voltage adjustment the service manual requires – skipping this causes permanent banding.
- Print a test image and check for banding and colour accuracy before returning to production.
Making a New Head Last
- Use ink that matches the head’s specification – cheap unbranded ink is the fastest way to shorten head life.
- Clean the wiper, cap and capping station at the same time as the head change.
- Keep humidity in the 40-60% range and never let a solvent printer sit dry for weeks.
- Keep the ink filter and damper on a replacement schedule rather than waiting for failure.
FAQ
How much does a printhead replacement cost?
Head price varies widely by model. Factor in new dampers, cleaning liquid and possible head-rank adjustment. Replacing early is usually cheaper than printing scrapped jobs for a month.
Can I replace a printhead myself?
On most mid-range Roland, Mimaki and Mutoh machines it is a manageable job for a careful technician. Industrial and UV machines often require a service engineer for head ranking.
Do compatible printheads work as well as originals?
Quality compatible heads use the same print engine and perform close to OEM when they are correctly graded and tested. Ask your supplier whether the head is tested before shipping – ours are.
Need a Replacement Head?
We stock tested replacement printheads for Roland, Mimaki, Epson, Mutoh, Ricoh, Konica, Kyocera, Canon and HP machines, including DX5, DX7, i3200 and XP600. Send us your printer model and the part number on the head and we will confirm the right match, price and lead time. Delivery worldwide in 2-7 days.