Hewlett Packard
Compatible HP 5550 (C9731A) Toner Cartridge Cyan
- Page Yield:
- 12,000 Pages
- Availability:
- In Stock
- Shipping:
- Free Shipping
- Page Yield:
- 12,000 Pages
- Availability:
- In Stock
- Shipping:
- Free Shipping
- Compatible Printers
- Color LaserJet 5500
- Color LaserJet 5500dn
- Color LaserJet 5500dtn
- Color LaserJet 5500hdn
- Color LaserJet 5500n
- Color LaserJet 5550
- Color LaserJet 5550dn
- Color LaserJet 5550dtn
- Color LaserJet 5550hdn
- Color LaserJet 5550n
- LaserJet 5500
- LaserJet 5500dn
- LaserJet 5500dtn
- LaserJet 5500hdn
- LaserJet 5500n
- LaserJet 5550
- LaserJet 5550dn
- LaserJet 5550dtn
- LaserJet 5550hdn
- LaserJet 5550ni>
- i>
- HP 645A
- Specifications
- SKU:
- CLS-HP-5550-C
- Printer Brand:
- Hewlett Packard
- OEM Number:
- C9731A
- Ink Color:
- Cyan
- Page Yield:
- 12,000 Pages
- Printer Type:
- Laser Cartridge
- Condition:
- New Compatible
- Description
- Reviews


Explore the robust and reliable printing capabilities of the HP 645A Color LaserJet Series, offering a comprehensive range of printers to meet diverse printing requirements. The Color LaserJet 5500DN, 5500DTN, 5500HDN, and 5500N models provide high-quality color printing, while the 5550DN, 5550DTN, 5550HDN, and 5550N offer enhanced performance and versatility. Experience vibrant color printing with the C9730A Black, C9731A Cyan, C9733A Magenta, and C9732A Yellow toner cartridges, compatible with the HP 645A toner cartridge and toner cartridge options. These cartridges ensure consistent and reliable print quality for a variety of printing tasks, from documents to marketing materials. Invest in a printing solution that meets your business needs with the HP 645A Color LaserJet Series, known for its exceptional performance and professional-grade results. Whether it's the Color LaserJet 5500 series or 5550 series models, these printers deliver superior print quality and reliability for all your printing needs.
Frequently Asked Questions
Which cyan cartridge does the Color LaserJet 5550 take?
C9731A, the cyan member of the 645A family. Confirm it against the stamp on the cartridge you remove from the machine; a code match settles the question completely.
We print CAD drawings and site plans. Is cyan really involved?
It is the blue of the drawing. Linework, dimension lines, revision clouds and title-block accents on technical drawings are printed in the cyan channel, so an engineering office can spend this cartridge on pages that look, at a glance, almost monochrome.
Do line drawings use the cartridge at the rated pace?
Usually slower. The 12,000-page rating assumes standard coverage, and linework covers little of the sheet, so a drawing office often beats the rating. The exception is rendered views and shaded plans, which drink cyan like photographs do.
Our plotted blue lines are coming out faint and greyish. What should we check?
Print a test page with a solid blue block. If the block is pale while the text on the same page is strong, the cyan cartridge is nearly empty — swap it before re-checking drawings, because faint lines on issued plans get misread on site.
Does printing A3 plans change the yield picture?
An A3 plan is one printed page against the rating, whatever its size, but its image area is larger, so heavy shaded plans spend toner faster per sheet. Judge the cartridge by the supply gauge during plan runs, not by sheet counts.
What backing does this cartridge come with?
A 1-year warranty with 1-year free returns. Orders ship from our warehouses in Illinois, Pennsylvania, Georgia and California, our support team answers Monday through Friday, 9 AM to 5 PM CST, and the shipping and returns page gives the full terms.
About This Cyan Cartridge for the Color LaserJet 5550
At $166.60 and rated for 12,000 pages, this C9731A cyan cartridge serves the HP Color LaserJet 5550 where it earns its keep in the drawing office: plans, elevations and site drawings whose blue linework has to stay legible from the screen to the site trailer. It is the supply for buyers who measure a cartridge not in pages but in issued revisions.

