Spectra Galaxy JA 256/30 AAA Printhead

The Spectra Galaxy JA 256/30 AAA Printhead is a high performance, robust and reliable jetting assembly designed for a broad range of wide format printers at resolutions up to 900 dpi. Two electrically independent piezoelectric slices, each with 128 addressable channels and two separate connecting cables, are combined to provide a total of 256 nozzles. The nozzles are arranged in a single line, at a native 0.010 inch distance between nozzles.

Direct specs (typical for JA 256/30 AAA)

•     Droplet and resolution: 256 nozzles with a nominal drop size around 30 pl; native resolutions up to about 900 dpi depending on printhead configuration and printer platform. This 256-nozzle array is organized in a single line with 254 µm (0.010 in) nozzle pitch. This combination supports high-detail output on wide-format substrates.
•     Technology and architecture: Piezoelectric drop-on-demand with independent firing control, enabling simultaneous or selective jet firing across the 256 channels. Power interface and fluid inlet are usually located on the top of the module for compatibility with a range of mounting options.
•     Operating envelope: Typical operating temperature up to 90°C; firing frequency around 20 kHz; compatible with a broad range of ink chemistries including solvent, UV-curable, and some oil-based inks depending on the exact model revision and printer integration.
•     Droplet size flexibility: Drop size is adjustable in the general range of about 25–30 pl (some listings quote 25–30 pl or 28 pl nominal). This allows some tuning for print speed versus optical density.
•     Durability and use case: Designed for industrial/large-format printers with robust duty cycles; often sold as new or refurbished by third-party suppliers with varying warranties.

What to check when shopping (our customer quick evaluation)

•     Ink compatibility: Confirm the exact ink families supported by the printhead in your printer ecosystem (solvent, UV, water-based, etc.). Some sellers emphasize solvent/UV compatibility; verify for your inks to avoid clogging or chemical incompatibilities.
•     Printer integration: Ensure the head’s mounting, fluid interface, and electrical connections align with your printer model or the printer you’re integrating it into. Some listings specify compatibility with brands like Agfa, HP, or Vutek, but compatibility is highly printer-specific.
•     Condition and warranty: Distinguish between new, refurbished, or used units. Warranty length and coverage for nozzle failure, fluid seals, and electronics can vary widely.
•     Electrical interface and firmware: Check the firing voltage, driver electronics, and any firmware requirements on the printer to ensure reliable firing and synchronization with the printer’s controller.
•     Availability of spare parts and service: Consider if the supplier offers seals, connectors, and nozzle maintenance parts, as well as technical support for installation and calibration.

Typical practical pros and cons

•     Pros: High nozzle count for sharp detail; compatible with multiple ink chemistries; flexible mounting and firing control; strong choice for high-resolution wide-format work.
•     Cons: Ink compatibility must be confirmed; head life and performance depend on printer integration and maintenance; price and warranty can vary significantly by source, especially for older revisions or refurbished units.

Illustrative quick guide for a buying decision

•     If you need high detail at up to 900 dpi on banners or signage and your printer supports JA-series heads, the JA 256/30 AAA is a solid option when ink compatibility and mounting fit are confirmed.
•     If your production requires only up to 600 dpi or uses inks outside the supported range, you might consider JA 256/50 or JA 256/80 variants (different droplet sizes and max resolutions) to better match your printer’s capabilities and ink system.

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

How they differ

The 30 pL model is the best fit when you want finer detail and the highest resolution among these three, while the 50 pL version is the middle ground for general wide-format production. The 80 pL head is tuned more for higher ink laydown and lower resolution work, such as white ink or applications where coverage matters more than fine detail.

Buying guidance

• Choose JA 256/30 AAA if print sharpness and finer text/detail matter most.
• Choose JA 256/50 AAA if you want a balanced option for broader industrial use and stronger compatibility across solvent, UV, and aqueous setups.
• Choose JA 256/80 AAA if your application needs heavier coverage, such as specialty or white-ink jobs, and you can accept lower max resolution