Spectra Galaxy JA 256/50 AAA Printhead

    The JA 256/50 AAA is a 256-nozzle, piezoelectric printhead designed for wide-format/industrial printers, offering up to 600 dpi resolution, 50 pL nominal droplet size (adjustable roughly 45–55 pL), 254 μm nozzle spacing, 36 μm nozzle diameter, a 20 kHz firing rate, and operation up to about 90°C. It supports multiple ink chemistries (solvent, water-based, UV) and allows independent firing of each of four piezo slices, enabling versatile head configurations. Typical use cases include high-quality graphic prints, signage, and durable outdoor graphics where precise droplet control and reliable long-term performance matter.

Key specifications at a glance

•     Nozzle count: 256 (4×64 independent channels)
•     Nozzle spacing: 254 μm (0.010 inch)
•     Droplet size: nominal 50 pL (adjustable 45–55 pL)
•     Droplet diameter: 36 μm
•     Resolution potential: up to 600 dpi
•     Firing frequency: 20 kHz
•     Operating temperature: up to 90°C
•     Ink compatibility: Solvent, water-based, UV inks
•     Firing control: serial-to-parallel converters; jets can be fired simultaneously or individually
•     Construction: piezoelectric technology; top-interface fluid and electrical connections; US-manufactured lineage with quality control tests

Pros

•     High nozzle count supports reliable high-resolution printing on large formats.
•     Independent slices allow flexible jetting patterns and potential for fault tolerance (e.g., can bypass jets if needed).
•     Broad ink compatibility makes it suitable for diverse workflows (solvent, UV, water-based).
•     Robust construction and supplier warranties common in reputable sources.

Cons / considerations

•     Compatibility must be verified with your specific printer platform, control electronics, and ink system (e.g., firmware, channel mapping, and maintenance routines).
•     We list “genuine” or “original” units with variable warranty terms; confirm warranty length and return policy before purchase.
•     Lead time and spare-part availability (e.g., seals, electrical connectors) may impact uptime.

Buying decision checklist

•     Confirm printer compatibility: ensure your printer supports a 256-nozzle JA-series head with 0.010 inch nozzle spacing and 36 μm diameter, and that your control software can address 64-channel segments per slice.
•     Verify ink compatibility: confirm solvent, UV, or water-based ink compatibility with your formulation and curing method.
•     Confirm electrical/interface fit: check connector type, mounting, and fluid interface alignment for your printer’s head carriage and electronics.
•     Warranty and service: we offering genuine parts, documented warranty, and clear service/support terms, return policy.
•     Total cost of ownership: include head price, replacement frequency, consumables (gaskets, seals), maintenance fluids, and potential downtime.
•     Supplier reputation: we are distributors with traceable part numbers and after-sales support.

Here’s a buyer-focused side-by-side view of the three Galaxy JA 256 variants.

Illustrative quick comparison (condensed)

JA 256/50 AAA vs. JA 256/80 AAA (if considering higher-volume variants):

        Both offer 256 nozzles, 0.254 mm spacing, and 50 pL droplet class; the 80 variant typically targets different configurations or user needs (check exact nozzle map and firing options). The 256/50 is generally the more common baseline for mid- to high-density prints, while the 256/80 can imply different channel arrangements or ink compatibility; always verify exact specs from the vendor to avoid mismatches. Note: availability and exact features may vary by supplier.

Core specs align with 256 nozzles, 50 pL droplet, 0.254 mm spacing, 36 μm diameter, 600 dpi potential, 20 kHz firing, up to 90°C, and solvent/water-based/UV ink support, with four independent slices for flexible firing control. This aligns across multiple vendor listings and product sheets.