HP CH646A - 761 Magenta/Cyan Printhead

HP 761 Magenta/Cyan Printhead (CH646A)

The HP 761 Printhead combines Magenta and Cyan channels to deliver vibrant, accurate color reproduction for professional wide-format production printing. Engineered specifically for HP DesignJet T7100 and T7200 Production Printer series, this genuine HP printhead ensures consistent, high-quality output with precise ink delivery and exceptional color fidelity for graphics, signage, and high-volume production applications.

Key Features:

• Genuine HP Quality: Original HP printhead designed for optimal performance and reliability
• Dual-Channel Design: Combines Magenta and Cyan in a single printhead for efficient color printing
• Advanced Nozzle Technology: Precision-engineered nozzles deliver consistent, accurate ink placement
• Vibrant Color Output: Produces brilliant magentas and cyans for stunning color reproduction
• Production-Grade Performance: Built for high-volume printing environments with demanding requirements
• Long-Lasting Durability: Robust construction ensures extended printhead life in production settings
• Easy Installation: Simple replacement process minimizes downtime
• Smart Technology: Built-in intelligence monitors printhead health and performance
• Professional Results: Delivers sharp details, smooth gradients, and accurate color matching
• Optimized Ink Flow: Ensures consistent ink delivery for uniform quality across large production runs

Technical Specifications:

• Part Number: CH646A
• Printhead Type: HP 761 Magenta/Cyan
• Color Channels: Magenta, Cyan
• Print Technology: HP Thermal Inkjet
• Compatibility: HP DesignJet T7100 and T7200 Production Printer series
• Nozzle Configuration: High-density nozzle array for precise ink placement
• Expected Life: Varies based on usage and print conditions
• Operating Temperature: 5°C to 40°C (41°F to 104°F)
• Storage Temperature: -20°C to 55°C (-4°F to 131°F)

Compatible Printers:

• HP DesignJet T7100 42-in Production Printer
• HP DesignJet T7100 60-in Production Printer
• HP DesignJet T7200 42-in Production Printer
• HP DesignJet T7200 60-in Production Printer

What is a Printhead?

The printhead is a critical component of your HP DesignJet printer that transfers ink from the cartridges onto the media. Unlike ink cartridges which contain the ink supply, the printhead contains the nozzles and firing mechanisms that precisely control ink droplet size and placement. The Magenta/Cyan printhead is essential for producing vibrant colors and accurate color reproduction in your prints.

Magenta & Cyan Color Importance:

Magenta and Cyan are two of the primary colors in the CMYK color model and are fundamental to professional color printing:

Cyan:

• Creates blues, greens, and cool tones when combined with other colors
• Essential for sky, water, and nature imagery
• Critical for accurate color reproduction in graphics and photography
• Provides depth and richness to color prints

Magenta:

• Produces reds, purples, and warm tones when mixed with other colors
• Vital for skin tones and flesh colors
• Essential for vibrant graphics and signage
• Key component in creating a wide color gamut

Production Printer Applications:

The HP DesignJet T7100 and T7200 series are designed for high-volume production environments, making this printhead ideal for:

• Commercial printing and print service providers
• Signage and display graphics production
• Retail and point-of-purchase materials
• Poster and banner printing
• CAD and technical document reproduction with color
• High-volume graphics and marketing materials
• Trade show displays and event graphics

When to Replace Your Printhead:

• Printer displays printhead replacement message or error
• Visible print quality issues such as streaking, banding, or missing colors
• Nozzle check pattern shows missing or misfiring nozzles in magenta or cyan
• Color accuracy issues or color shifts in prints
• After extended use or high-volume printing
• When cleaning cycles no longer resolve print quality issues

Why Choose Genuine HP Printheads?

Genuine HP printheads are precision-engineered and rigorously tested to work seamlessly with HP DesignJet printers and HP inks. They deliver consistent, reliable performance even in demanding production environments and are backed by HP's quality guarantee. Using genuine HP printheads helps protect your printer investment, ensures optimal print quality, and maintains the color accuracy required for professional production printing.

Perfect for: Print service providers, commercial printers, sign shops, retail graphics producers, marketing agencies, and high-volume production environments that demand exceptional color accuracy, reliability, and consistent performance for vibrant, professional-quality prints.