Unveiling HP Multi Jet Fusion: A Comprehensive Guide to its Working Mechanism


HP Multi Jet Fusion (MJF) technology, a product of HP’s extensive research in inkjet technologies and digital manufacturing, stands as a groundbreaking innovation in 3D printing. This guide delves into how MJF works, its unique features, and the transformative impact it has on modern manufacturing.

Technical Overview of HP Multi Jet Fusion:

MJF technology is distinguished by its ability to produce high-quality parts rapidly and cost-effectively, often up to ten times faster than competing methods. This significant breakthrough in both speed and quality is crucial in promoting the widespread adoption of 3D printing in digital manufacturing.

The MJF Printing Process:

MJF’s process commences with the deposition of a thin layer of powdered material across the build area. HP’s Thermal Inkjet array then precisely applies fusing agents to the powder. Subsequently, the material is exposed to an energy source, causing the areas with fusing agent to melt and fuse, thereby forming a solid layer. This process is meticulously repeated, layer by layer, until the part is completely fabricated.

Unique Features of MJF Technology:

  • Synchronous Architecture: MJF employs a high-speed synchronous architecture for building layers, significantly boosting productivity.
  • Control over Part Properties: MJF technology uniquely enables control over the physical and functional properties at each point within a part, offering capabilities like variable density and strength.
  • High Build Quality: MJF produces parts with outstanding mechanical properties, high dimensional accuracy, and fine details, suitable for a broad spectrum of applications.
  • Material Efficiency: The technology utilizes HP 3D High Reusability PA 12 powder, designed to reduce waste and permit reuse in subsequent prints.

Applications and Material Range:

MJF demonstrates versatility, being suitable for the production of both functional and aesthetic components across diverse industries such as automotive, healthcare, and consumer products. Its material portfolio encompasses thermoplastics like PA 11 and PA 12, glass-bead reinforced materials, flame-retardant materials, and elastomers.

Transforming Manufacturing with a Digital Workflow:

HP’s vision for MJF extends beyond the printer, aiming to revolutionize part design and manufacturing. This involves creating streamlined workflows and introducing new capabilities for 3D printing, reshaping the supply chain for high-value items and facilitating on-demand manufacturing.

Future Directions and Scalability:

HP’s commitment to the evolution of MJF technology is evident in its ongoing research and collaborations. The future of MJF includes expanding the range of functional agents and materials, thus broadening the scope and applications of 3D printing.


HP Multi Jet Fusion technology marks a significant stride in the field of 3D printing, offering unparalleled speed, quality, and versatility. Its unique features and potential for transforming manufacturing workflows make it an integral part of the future of digital manufacturing.

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