Features
Compatibility	HP Color LaserJet 5550 Supply Kits work with:
Quantity per pack	1 pc(s)
Brand compatibility	HP
Country of origin	Japan
HP segment	Business
Logistics data
Harmonized System (HS) code	84439990
Operational conditions
Operating temperature (T-T)	15 - 25 °C
Operating relative humidity (H-H)	20 - 80%
Storage temperature (T-T)	-20 - 40 °C
Other features
Print technology	Laser
UNSPSC-code	44103004
Packaging data
Package width	661 mm
Package depth	308 mm
Package height	324 mm
Package weight	5 kg
Weight & dimensions
Width	661 mm
Depth	308 mm
Height	324 mm
Weight	5 kg

The HP Color LaserJet Q3985A fuser kit (220 V) is a replacement part for the printing process in laser printers, specifically designed for use in the HP Color LaserJet 5550. It serves as a fuser kit, which permanently fuses toner particles onto paper using heat and pressure, ensuring sharp, vibrant, and error-free print results. The kit is part of HP’s original consumables and was developed alongside the printer to maintain print quality and reliability throughout the device’s lifetime.

Applications
This fuser kit is exclusively intended for the HP Color LaserJet 5550, a professional colour laser printer from the HP Business segment. It is used in office environments where high print quality, fast output, and continuous operational reliability are required. Using original HP consumables such as this kit ensures optimal compatibility and minimizes the risk of print errors or technical malfunctions.

Functions and Features in Detail
The kit is designed as a replacement heating unit, integrated into the printer to melt and fuse toner onto paper. The new cartridge design enables easy operation and maintenance, simplifying the replacement procedure for the user. The component is engineered for reliable performance and ensures consistently good print results regardless of print volume. Using original HP consumables guarantees consistent colour vibrancy and sharp text.

Technology Explained Simply
The fuser operates using laser printing technology, in which toner particles are electrostatically applied to paper and then fused using heat and pressure. The Q3985A kit performs this fusing step. The device’s operating temperature range is between 15 and 25 °C, with relative humidity during operation between 20 and 80 %. These conditions are necessary to ensure stable fuser performance. For storage, a temperature range of -20 to 40 °C is permissible, ensuring storage capability under various environmental conditions.

Compatibility and Accessories
The fuser kit is specifically developed for the HP Color LaserJet 5550 and functions only with this printer system. It is part of HP’s original consumables and is used as a replacement part for the heating unit inside the printer.

Installation and Mounting
Installation involves replacing the old heating unit inside the printer. The new cartridge design allows for easy handling, with exact steps described in the printer’s user manual. The installation requires no additional tools or special expertise. The kit’s dimensions are 661 mm (width), 308 mm (depth), and 324 mm (height), with a weight of 5 kg. These dimensions match the internal dimensions of the printer, ensuring a secure fit.

Operational Advantages
Using the original HP fuser kit ensures consistent print quality throughout the printer’s lifetime. The component’s reliability reduces downtime and maintenance requirements. Its easy replaceability minimizes operational interruptions, and its joint development with the printer ensures optimal functional coordination. Operational reliability under the specified environmental conditions ensures stable performance in office environments.

The product is manufactured in Japan and designed for the business segment. The packaging matches the device’s dimensions (661 mm × 308 mm × 324 mm) and has a package weight of 5 kg.