Printhead HP 777 for DesignJet Z6 Pro and Z9+ Pro — 146.8×131.4×27.7 mm

HP 777 printhead is a replacement printhead designed for HP DesignJet Z6 Pro and Z9+ Pro large-format inkjet printers. With compact physical dimensions of 146.8×131.4×27.7 mm, this printhead restores nozzle performance to support high-resolution technical and photographic output. Compatible with professional reprography, CAD drawings and high-quality graphic prints, the part is supplied as an individual unit intended to return a printer to factory-level nozzle operation and consistent colour rendering.

Advantages

The printhead uses high-definition nozzle architecture and dual-drop technology to increase effective nozzle density and deliver finer detail without requiring separate light-colour inks. Restoring or replacing a worn printhead improves line sharpness, edge definition and tonal gradation in high-resolution maps, technical drawings and photographic prints. The compact form factor simplifies installation and reduces downtime when servicing the printer.

Suitable for

• Large-format photo printing and fine art reproductions
• CAD and technical drawing production
• GIS and map printing where detailed line work is required
• Print service providers and retail locations producing posters and signage

Key specifications

• Compatible printer models: designed for use with HP DesignJet Z6 Pro and Z9+ Pro series
• Physical dimensions: 146.8 mm (width) × 131.4 mm (depth) × 27.7 mm (height)
• Nozzle architecture: high-definition nozzle layout with dual-drop capability for increased nozzle density
• Application type: large-format thermal inkjet printhead for photo, CAD and graphics printing
• Supply format: single-unit replacement printhead

How to use

Power off the printer and follow the manufacturer’s service instructions for safe removal of the old printhead. Handle the printhead by its housing, avoiding contact with the nozzle plate and electrical contacts. Insert the replacement printhead into the designated carriage until it seats securely, then perform the printer’s built-in alignment and nozzle check procedures to confirm proper installation and nozzle operation. Allow the printer to complete any automated cleaning cycles before starting production prints.

Usage recommendations

Use genuine or manufacturer-recommended inks and perform regular nozzle checks and alignments to maintain print quality. Store spare printheads in their original packaging in a clean, dry environment at moderate temperature to prevent nozzle contamination or drying.