RxD inkjet pigment dispersions: 16 frequently asked questions

Inkjet pigment dispersions are the foundation of a good water-based inkjet ink. That’s why Fujifilm created its own dispersion technology, which is now accessible to global ink formulators and OEMs. Here are some of the questions commonly asked about Fujifilm’s RxD aqueous inkjet pigment dispersions.

What are RxD inkjet pigment dispersions? 

Fujifilm’s RxD dispersions are a range of aqueous pigment dispersions for the formulation of water-based inkjet inks. The strength of RxD lies in its three modes of stabilisation: steric, electrostatic and cross-linking. This produces an exceptionally stable dispersion of the pigment particles, making RxD suitable for inkjet ink formulation across the widest range of applications. RxD dispersions are named after the proprietary Reactive Dispersants that are key to the cross-linking technology. 

Are RxD dispersions easy to work with for inkjet ink formulation? 

RxD pigment dispersions are exceptionally stable, high purity dispersions that give the ink formulator a wide formulation window, providing the flexibility to use a broad range of components to achieve the desired properties and performance required of the ink. This also makes RxD dispersions suitable for the formulation of inkjet inks for more challenging applications. 

What ink formulants are RxD dispersions compatible with? 

RxD pigment dispersions are compatible with a vast range of solvents, humectants, and binders commonly used in aqueous ink formulations. Contact us with the details of your project and we will provide a list of commonly used formulants. Your ink formulation must be tested in the print system. 

What products are available in the RxD dispersion range? 

RxD dispersions are available in two main aqueous pigment dispersion (APD) product series. APD 1000 dispersions are suitable for use across a broad range of applications. APD 4000 dispersions have a higher pigment concentration, providing extended formulation latitude in the ink. Also, the particle size is typically lower, making it ideal for small printhead architectures (eg., MEMS). RxD dispersion colors include KCMYROGV. RxD dispersions are sold under the trademarked brand name “Pro-Jet”. 

Can RxD pigment dispersions be mixed with each other?  

Two or more dispersions from either APD series can be mixed in an individual ink to achieve the desired ink shade. Or the ink sets can use a mix of dispersions: for example, a black ink could use APD 1000, while the magenta ink could use APD 4000. 

Which printheads are compatible with RxD pigment dispersions? 

RxD aqueous pigment dispersions can be used in inks across a wide range of mainstream printheads, including Dimatix Starfire SG1024 and Samba, Kyocera, Epson, Ricoh, and others. Contact us to discuss your printhead requirement. Ink formulators must confirm the compatibility of their ink with the chosen printhead and print system. 

Are RxD dispersions suitable for IDFC ink development? 

All components knowingly used in the colored Pro-Jet dispersions (CMYROGV APD100/1500/4000) and in Pro-Jet Black APD 1500 are included in List A or B of Swiss Ordinance SR 817.023.21, annex 10. Most of the dispersions are manufactured following EUPIA guidance. Contact us to discuss the use of RxD dispersions in Indirect Food Contact applications. 

Why should I use RxD water-based pigment dispersions for my inkjet ink formulation? 

  • Easy to use 
  • Fast development time 
  • Already well dispersed  
  • High fluid stability 
  • Wide formulation latitude 
  • Extended color gamut 
  • Excellent flexibility 
  • Optimal jetting performance 
  • Long shelf-life 
  • High purity and consistency 
  • Narrow particle size distribution 
  • Low oversized particle count  
  • High pigment concentration 
  • Environmentally friendly 

Can RxD dispersions be used with Thermal Inkjet (TIJ) printheads? 

Some customers have developed ink formulations for Thermal Inkjet (TIJ) printheads. 

What are the manufacturing pigment strength tolerances of RxD?  

To learn more about our RxD pigment strength range, please contact us for specifications.  

Can inks developed with RxD dispersions meet OEKO-TEX & GOTS certification requirements? 

Inkjet inks that use RxD aqueous pigment dispersions have been certified by OEKO-TEX ECO Passport and have been approved as inputs for application in the processing of GOTS certified textile products. 

How is the quality and consistency of RxD dispersions controlled? 

As an ISO 9001 registered organisation, we employ stringent quality control and assurance procedures at every step of the manufacturing process to ensure our product consistently achieve the highest quality levels. We use the latest analytical methodology and equipment to control the quality of our raw materials and finished product. 

Where are RxD inkjet pigment dispersions manufactured? 

RxD pigment dispersions are manufactured at FUJIFILM Ink Solutions Group facilities in Grangemouth, Scotland, UK and New Castle, Delaware, USA. 

What pack sizes are available? 

RxD pigment dispersions are available in pack sizes of 20kg, 200kg and 1000kg

Where are RxD pigment dispersions supplied? 

Through the FUJIFILM Ink Solutions Group manufacturing infrastructure and supply chain we can deliver a continuous global supply to over 86 countries. 

What is the country registration status of RxD pigment dispersions? 

Fujifilm’s RxD pigment dispersions contain a proprietary cross-linked polymer that has been registered in different regions/countries. Click here to see all the product registration details. Customers must check and comply with individual country requirements. Contact us for further advice on country registrations. 

The information presented here does not represent a complete solution and the ink formulator must conduct confirmatory testing to ensure that the ink is compatible with their system, and that the jetting and print performance are acceptable. 

Learn more: 8 reasons to use RxD pigment dispersions in your aqueous inkjet ink formulation.

To trial RxD pigment dispersions for your inkjet ink formulation, or for more information, contact us.