HP 645A Black LaserJet Toner Cartridge ( C9730A )

Key Features of HP 645A Black Toner Cartridge

Crisp, Professional Black Prints

The HP 645A Black LaserJet Toner Cartridge ( C9730A ) uses HP’s proprietary toner formulation to produce deep, rich blacks that are ideal for text-heavy documents and grayscale images. From fine lines to bold headlines, the output is always clear, sharp, and smudge-resistant, meeting the demands of professional environments.

Reliable High-Yield Output

This cartridge offers an impressive page yield of up to 13,000 standard pages (ISO/IEC 19798), making it perfect for high-volume printing environments. The large capacity minimizes downtime and reduces the frequency of cartridge changes, helping boost productivity and operational efficiency.

Designed for HP LaserJet Compatibility

The HP 645A Black toner cartridge is specifically engineered for seamless compatibility with HP Color LaserJet 5500 and 5550 series printers. It ensures trouble-free installation, smart toner level detection, and optimal print performance without the risk of leaks, misalignment, or errors.

Smart Printing Technology

With built-in HP Smart Technology, the cartridge and printer work together to monitor usage and notify users when toner is low or maintenance is needed. This feature helps avoid printing interruptions and ensures you’re always prepared with replacement supplies.

Technical Specifications of HP 645A Black Toner Cartridge (C9730A)

• Model Number: C9730A

• Color: Black

• Cartridge Type: Toner Cartridge (Monochrome)

• Printing Technology: Laser

• Page Yield: Up to 13,000 pages (based on ISO/IEC 19798)

• Toner Type: HP ColorSphere Toner

• Operating Temperature Range: 10°C to 30°C

• Storage Temperature Range: -20°C to 40°C

• Package Dimensions: 390 x 164 x 214 mm

• Weight (with package): Approx. 2.6 kg

• Shelf Life: Up to 24 months (if stored properly)

These specifications reflect the cartridge’s durability, reliability, and suitability for demanding professional use.

Compatible Printers for HP 645A Black Toner Cartridge

The HP 645A Black Toner Cartridge (C9730A) is compatible with the following HP Color LaserJet models:

• HP Color LaserJet 5500

• HP Color LaserJet 5500dn

• HP Color LaserJet 5500dtn

• HP Color LaserJet 5500hdn

• HP Color LaserJet 5500n

• HP Color LaserJet 5550

• HP Color LaserJet 5550dn

• HP Color LaserJet 5550dtn

• HP Color LaserJet 5550hdn

• HP Color LaserJet 5550n

Using the C9730A in these models ensures optimal printer performance, longevity, and consistent print quality.

Advantages of Using HP 645A Black Toner Cartridge

✅ High-Capacity Output: Prints up to 13,000 pages — ideal for enterprise environments
✅ Superior Print Clarity: Perfect for professional documents, charts, and detailed reports
✅ Eco-Friendly: Eligible for HP Planet Partners recycling program
✅ Easy Installation: Designed for quick and hassle-free replacement
✅ Smart Monitoring: Integrated technology helps reduce waste and manage toner usage effectively
✅ Cost-Efficiency: Lower cost per page in the long term compared to standard cartridges

These benefits make the HP 645A Black toner a smart investment for organizations focused on performance, quality, and sustainability.

Best Use Cases for HP 645A Black Toner Cartridge

• 🏢 Corporate Offices: For printing reports, presentations, business proposals

• 🏫 Educational Institutions: Ideal for producing exams, manuals, and forms

• ⚖️ Legal & Financial Services: Print crisp contracts, invoices, and financial documents

• 🏛️ Public Sector & Government: High-quality black printing for official communications and records

The HP 645A is perfectly suited for any organization requiring dependable, high-yield monochrome printing with professional clarity.

Conclusion

The HP 645A Black LaserJet Toner Cartridge (C9730A) is a powerful, high-yield printing solution designed for businesses that value speed, consistency, and top-tier print quality. With its superior page yield, sharp black output, and HP-engineered reliability, this toner cartridge ensures maximum efficiency and minimum hassle.

If you’re looking to maintain a professional image, reduce operating costs, and improve office productivity, the HP 645A Black toner is the ideal choice. Backed by HP’s commitment to quality and sustainability, it offers a long-lasting solution for your everyday printing demands.