Printhead HP 774 for DesignJet — Photo Black / Light Gray, pigment inks, single pack

The HP 774 printhead for DesignJet is a single-pack printhead module with dedicated Photo Black and Light Gray pigment nozzles designed to restore accurate black and gray output for large-format photo and grayscale printing. Intended for use with compatible HP DesignJet printers, this genuine HP component supports user-replaceable installation and is suitable for workflows that require consistent tonal reproduction across photos, posters, banners and technical drawings.

Advantages

This original HP printhead delivers pigment-based Photo Black and Light Gray jetting for improved neutral grays, deeper photo blacks and stable grayscale transitions. Using an OEM printhead helps maintain consistent drop placement and nozzle performance over time, reducing the risk of banding or color shifts when combined with genuine HP inks. The single-pack format simplifies inventory and replacement for printers that need one dedicated printhead module.

Suitable for

• High-production photographic prints and fine art reproductions
• Large-format banners, backlits and POP displays
• Posters and signage with photo-realistic blacks and grays
• Maps, technical drawings and monochrome line work

Key specifications

• Ink type: pigment-based nozzles for Photo Black and Light Gray
• Configuration: dual-nozzle printhead covering Photo Black and Light Gray channels
• Compatibility: designed for HP DesignJet large-format printer models that accept HP 774-series printheads
• Pack quantity: single printhead unit

How to use

Power off the printer or follow the printer’s on-screen instructions for safe printhead replacement. Remove the empty or faulty printhead module according to the service guide, then insert the HP 774 printhead firmly into the designated slot until it clicks into place. After installation, follow the printer prompts to align and charge the new head if required and run any recommended cleaning or calibration cycles to ensure optimal output.

Recommendations

For best long-term performance, use Original HP pigment inks and perform routine maintenance cycles as recommended by the printer’s manual. Store unused printheads in their original packaging at room temperature and install promptly to avoid contamination. When producing high-volume photo or grayscale work, periodically inspect nozzle health and run automated nozzle checks to maintain consistent image quality.