Overview
The Seiko SPT510 50PL (IRH1513U-3522) is a proven drop-on-demand piezo head for grand-format advertising and signage printers. Its 510 nozzles cover a 71.8 mm swathe at 180 dpi native with up to 720 dpi output, and the steel-plate nozzle guard delivers 4–5× the service life of standard 128-nozzle heads. X/Y/Z datum points, flexible mounting orientation and an optional heater make system integration straightforward.
Key Features
- 510 active nozzles across a 71.8 mm print width
- 180 dpi native resolution, up to 720 dpi output quality
- 50 pL drop at 6–8 kHz (35 pL and 80 pL versions available separately)
- Steel-plate nozzle protection for 4–5× longer service life
- Downward, horizontal and vertical mounting with X/Y/Z datum points
- Oil, UV and solvent ink compatibility
- Original new unit, S/N 881M3U0153B with factory label
Technical Specifications
| Manufacturer | Seiko Instruments Inc. (SII Printek) |
| Model | SPT510 50PL |
| Part number | IRH1513U-3522 |
| Serial number | 881M3U0153B, 21.1 V |
| Technology | Drop-on-demand piezoelectric |
| Active nozzles | 510 |
| Nozzle pitch | 141.1 µm (approx. 1/180 inch) |
| Active print width | approx. 71.8 mm |
| Native resolution | 180 dpi (max 720 dpi) |
| Drop volume | 50 pL |
| Firing frequency | 6–8 kHz |
| Jetting speed | 4.2 m/s |
| Ink compatibility | Oil / UV / solvent |
| Dimensions | 126.3 × 99.2 × 32.9 mm |
| Dry weight | approx. 200 g |
| Driving interface | Parallel |
| Origin | Made in Japan |
Compatible Printers & Systems
Infiniti / Challenger FY-3208N/Q, FY-3278N/Q; Phaeton UD-3278K/Q; Acetek TC-3208GD; CrystalJet CJ-4000/CJ-6000, F1804/F3304II (SPT510-50PL config); Icontek TW-3308MS; SID Xpress 320; Xenons X5310; Xutu XTS 1000/2000.
Buying Notes
Note: 35PL (IRH1513D) and 50PL (IRH1513U) variants are NOT interchangeable — confirm your installed part number before ordering.
Frequently Asked Questions
What is the difference between SPT510 35PL and 50PL?
The 35PL variant uses part numbers IRH1513D-3311/3322 and jets 35 pL drops; the 50PL variant (this head) uses IRH1513U-3522 and jets 50 pL. They have different part numbers, ink configurations and compatible printers — they are not interchangeable.
Which printers use the IRH1513U-3522?
Grand-format solvent/UV printers including Infiniti Challenger FY-3208N/Q and FY-3278N/Q, Phaeton UD-3278K/Q, CrystalJet CJ-4000/CJ-6000, Icontek TW-3308MS, SID Xpress 320, Xenons X5310 and Xutu XTS series.
How long does an SPT510 last?
Thanks to the steel-plate nozzle guard, Seiko rates the SPT510 for 4–5× the usable life of common 128-nozzle heads under equivalent conditions.
Related products: Seiko SPT1020 35PL Printhead, Seiko 508GS Green Label Printhead, Used Seiko RC1536 Printhead — see all Seiko printheads.
