HP CH645A - 761 Yellow Printhead

HP 761 Yellow Printhead (CH645A)

The HP 761 Yellow Printhead delivers vibrant, accurate yellow tones with exceptional color fidelity for professional wide-format 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 superior color reproduction for graphics, signage, and production printing applications.

Key Features:

• Genuine HP Quality: Original HP printhead designed for optimal performance and reliability
• Vibrant Yellow Output: Delivers brilliant, accurate yellow tones for stunning color reproduction
• Advanced Nozzle Technology: Precision-engineered nozzles deliver consistent, accurate ink placement
• 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 print quality across large runs

Technical Specifications:

• Part Number: CH645A
• Printhead Type: HP 761 Yellow
• Color: Yellow
• 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 Yellow printhead is essential for producing vibrant colors and accurate color reproduction in your prints.

Yellow Printhead Importance:

Yellow is one of the primary colors in the CMYK color model and plays a crucial role in color printing:

• Color Mixing: Combines with cyan and magenta to create a wide range of colors
• Warm Tones: Essential for oranges, greens, and warm color reproduction
• Brightness: Adds luminosity and vibrancy to prints
• Skin Tones: Critical component in accurate skin tone reproduction
• Graphics: Vital for vibrant signage, posters, and marketing materials

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
• High-volume graphics and marketing materials

When to Replace Your Printhead:

• Printer displays printhead replacement message or error
• Visible print quality issues such as streaking, banding, or missing yellow
• Nozzle check pattern shows missing or misfiring nozzles
• Color accuracy issues or yellow 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.