Overview
The 508GS 12PL black label (IRH2533U-2410) is the UV-optimised member of Seiko’s 508GS greyscale family. Its seals and fluid path are matched to UV-curable ink chemistry, delivering durable, high-quality output for flatbed and roll-to-roll UV printers in signage, labels, ceramics and industrial decoration. Jetting performance matches the green-label (solvent/UV) and blue-label (aqueous) variants.
Key Features
- 508 active nozzles across a 71.54 mm print width at 180 npi
- 12 pL base drop with multi-drop greyscale up to 84 pL
- Up to 28 kHz firing and 320 µL/sec productivity
- UV-curable configuration (IRH2533U-2410, black label)
- Non-wetting nozzle plate, guard and built-in damper
- New original heads with anti-static packaging and Head ID
Technical Specifications
| Manufacturer | Seiko Instruments Inc. (SII Printek) |
| Model | 508GS 12PL (Black Label, UV) |
| Part number | IRH2533U-2410 |
| Active nozzles | 508 |
| Print width | 71.54 mm |
| Native resolution | 180 npi (up to 720 dpi effective) |
| Drop volume | 12 pL base, multi-drop greyscale up to 84 pL |
| Grey levels | 4 |
| Firing frequency | up to 28 kHz |
| Max productivity | 320 µL/sec per head |
| Ink compatibility | UV-curable ONLY |
| Dimensions | 121 × 28.2 × 123.6 mm |
| Weight | < 300 g |
| Origin | Made in Japan |
Compatible Printers & Systems
UV printers built on the 508GS platform: Infiniti/Challenger UV series (FY-3208GS/UV, FY-3206R, FY-3208R/H), CrystalJet 6000 / F3308II, Crystek X5300, Icontek TW-3308HG/MG, Kerajet K700, Leyenda, Nuocai, OraJet J18.
Frequently Asked Questions
What is the difference between the black label and green label 508GS?
Both share identical 508-nozzle greyscale hardware. The black label (IRH2533U-2410) is configured for UV-curable inks; the green label is for solvent/UV systems. The fluidic materials differ — always match the label to your ink family.
Can the black-label 508GS print water-based inks?
No. Use the blue-label IRH2533U-1420 for aqueous inks. Using the wrong ink family degrades seals and permanently damages the head.
What resolution can it achieve?
Native nozzle density is 180 dpi over 71.54 mm; with greyscale multi-drop and multi-pass printing, effective output reaches 720 dpi class image quality.
Related products: Seiko 508GS Green Label Printhead, Seiko 508GS Blue Label Aqueous Printhead, Seiko SPT510 50PL Printhead — see all Seiko printheads.
