MultiJet Printing (MJP)

MultiJet Printing (MJP) is a new Rapid Prototyping process that provides a quick turnaround for smooth, high-resolution, hard plastic parts with complex geometries. The process consists only of UV bulbs and photopolymer materials.

Need Rapid Prototyping of designs with smooth surfaces and highly complex geometries? MultiJet printing is the solution for you.

Printed parts have smooth surfaces and exceptional feature details and mechanical properties suitable for study models, form & fit testing and other applications.

The MJP process consists of a print head, platform, UV lamp, and a planarizer.  Just like any 3D-printing machine, the process requires a 3D CAD file.  The 3D printer then prints each layer of the file in UV curable liquid plastic onto a flat platform. The wax support material is also jetted to fill voids and other non-freestanding features.  UV lamps solidify the materials, creating a fully cured plastic or wax part.

Printers
ProJet 3510 range of printers: ProJet 5000 ProJet 5500X
Materials
Finishes
  • Nickel Plated
  • Painted
  • Primed
  • Standard
Anatomy of the MultiJet Printing Process

Anatomy of the MultiJet Printing Process

MultiJet Printing is an additive manufacturing process that prints thin layers of UV curable liquid plastics and wax support materials to create high resolution fully cured plastic parts. (Read More)

MJP or MultiJet Printing is an inkjet printing process that uses piezo printhead technology to deposit either photocurable plastic resin or casting wax materials layer by layer. MJP is used to build parts, patterns and molds with fine feature detail to address a wide range of applications. These high-resolution printers are economical to own and operate and use a separate, meltable or dissolvable support material to make post-processing a breeze. Another big benefit is that removing support material is virtually a hands-free operation and allows even the most delicate features and complex internal cavities to be thoroughly cleaned without damage.

MJP printers offer the highest Z-direction resolution with layer thicknesses as low as 16 microns. In addition, selectable print modes allow the user to choose the best combination of resolution and print speed, so it’s easy to find a combination that meets your needs. Parts have smooth finish and can achieve accuracies rivaling SLA for many applications. Recent material advances have improved the durability of plastic materials and are now suitable for some end-use applications.

(View the video to the left to see how MultiJet 3D printing works.)
One nice point about MJP printers is that they are office compatible, using standard office electricity to provide convenient and affordable access to high-quality prototypes and indirect manufacturing aids. Office compatibility in concert with their capabilities make MJP printers ideal for direct investment casting applications in jewelry, dental, medical and aerospace applications where digital workflows provide significant time, labor, quality and cost advantages. MJP wax printers also offer a digital drop-in alternative to traditional lost-wax casting processes, eliminating time consuming and costly process steps while utilizing traditional casting methods and materials. All in all, these printers can print virtually any geometry and provide scalable high-volume throughput.

Process Comparison Table

Process Comparison Table

Stereolithography (SLA) MultiJet Printing (MJP – ProJet) ColorJet Printing (CJP – ZPrint) Selective Laser Sintering (SLS) Plastic Jet Printing (PJP) QuickPlastic Cast Urethanes (Polys)
Applications Excellent for fit and form testing.


Ideal for trade show-quality parts via painting and texturing.


Best process for water resistant materials, not waterproof.

Excellent for High Res applications with complex geometries.


Smooth surface with good impact strength.


Comparable to SLA.

Excellent for demonstration models with full color printing.


Stiff with good impact strength.

Ideal for durable, functional parts with a variety of applications.


Capable of producing snap fits and living hinges.


Heat and chemically resistant.

Ideal for Conceptual models, Engineering models, and Functional testing prototypes.


Good choice for high-heat applications as melting temperature is around 280°F.

Ideal for < 100 marketing samples.

Production-like attributes (surface finish, color, accuracy & material properties).

Instant Quoting Maximum Dimensions 25″ x 25″ x 21″ 11.75″ x 7.3″ x 8″ 10″ x 15″ x 8″ 28″ x 19″ x 19″ ABS: 23″ x 19″ x 23″
Polycarbonate:
14″ x 16″ x 16″
25″ x 25″ x 21″
Machines Viper, SLA 7000 SLA 5000, iPro & Viper Pro ProJet HD 3000 Plus ProJet 460Plus and ProJet 660Pro Vanguard Si2 System, Sinterstation HiQ & Pro Vantage, Titan & Maxum RTV Tooling
Layer Thickness High-Resolution: 0.002″ – 0.004″
Standard Resolution: 0.005″ – 0.006″
Horizontal build layers down to 16 microns (0.0006 inches) 0.0035″–0.004″ Standard Resolution: 0.004″ Standard Resolution: 0.01″;
Minimum wall thickness is 0.02″
High-Resolution: 0.002″ – 0.004″
Standard Resolution: 0.005″ – 0.006″
Material Options ABS-Like White (Standard & High Res), ABS-Like Gray, ABS-Like Black, Rigid PC-Like (Standard & High Res), Durable PP-Like (Standard & High Res), Semi-Flexible, High-Impact ABS-Like, High-Temp ABS-Like, High-Temp PC-Like, Rigid, & Technician’s Choice Translucent Amber (EX200)
and Translucent Blue (HR200)
VisiJet PXL Nylon, Glass-Filled Nylon, Durable Nylon ABS, ABS-M30, ABSi, PC-ABS, ABS-M30i, PC-ISO, Ultem, PPSF & Polycarbonate ABS-Like, PE-Like, PP-Like, Lexan-Like, Glass Filled Nylon, High Strength, & Elastomer (25A, 32A, 42A, 50A, 60A, 70A, 80A, 90A), High Temp,
RC 79D MRI Transparent, UL94V0 PP-Like, & UL94V0 ABS-Like
Finish Options Strip & Ship, Standard, Primed, Painted, Nickel-plated Standard Finish Only Standard (Coated with ColorBond) Standard finish rougher than SLA due to base material being a powder. No special finishing due to toughness of material. Standard, Show-Quality, Light Pipe Finish, & Textures Available.
Lead Time Options Same Business Day Shipment, Next Business Day Shipment, # of Business Days from Order Date

Standard (5 -7 Days)

Standard (5 -7 Days)

Next-day shipment, Standard (3 – 5 days), Economy (8 – 10 days) Standard (3 – 5 days) Standard (6 – 9 days for first articles, Part production: 2 – 4 parts/day)
Recommended Minimum Feature Size

High-Resolution:
0.010″ – 0.015″

Standard Resolution:
0.025″ – 0.035″

0.025″

.040″

0.030″ – 0.040″

0.025″

0.025″

Application

•    Rapid Prototypes:
•    Design Appearance Models
•    Proof of Concept Prototypes
•    Design Evaluation Models (Form & Fit)

Benefits

•    Smooth surface finish
•    High resolution
•    Short lead times
•    Parts can be painted, machined, drilled or chrome plated.

Case Studies
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