The HP 507A Black LaserJet Toner Cartridge, part number CE400A, delivers dense, consistent black output for HP Color LaserJet Enterprise 500 series printers, including the M551 and M575 lines. Engineered for demanding office environments, the cartridge relies on HP ColorSphere toner technology, a fine spherical particle formulation designed to melt and fuse evenly onto the page, producing crisp text edges and uniform solid fills across contracts, reports, and everyday correspondence. The cartridge is housed in a rigid enclosure featuring a factory sealed toner chamber and an integrated drum protection shutter that shields the photosensitive drum from ambient light and dust until installation. Rated for approximately 5500 pages at 5 percent page coverage, the cartridge is sized for standard monthly print volumes typical of shared departmental printers, balancing replacement frequency against upfront supply cost. The cartridge installs directly into the toner bay without manual filling, priming, or calibration, and the printer's internal sensors automatically recognize the installed unit to manage toner level reporting and print quality adjustments across the job queue. Consistent calibration alongside the cyan, magenta, and yellow cartridges in the same family supports accurate, repeatable color matching whenever black text is layered over color graphics or photographic elements. Facilities managers overseeing shared printer fleets gain predictable per page costs and simplified inventory planning when standardizing on genuine HP supply chains.

Key Features:

• ColorSphere Toner Formulation: Fine spherical toner particles melt and fuse evenly across the page for crisp text edges and uniform solid fills in reports and correspondence.
• Enterprise Printer Compatibility: Engineered specifically for the Color LaserJet Enterprise five hundred series, including the M551 and M575 print and multifunction product lines.
• Balanced Page Yield: Rated for approximately fifty five hundred pages at five percent coverage, sized for typical monthly volumes on shared departmental printers.
• Factory Sealed Construction: An integrated drum protection shutter and sealed toner chamber guard internal components from light and dust exposure until installation.
• Layered Color Precision: Calibrated alongside the cyan, magenta, and yellow cartridges for accurate results whenever black text overlays color graphics or photos.