Have a VUTEk®?

UV and LED curable, formulated for use in Vutek® GS™ Series printers.

Want to boost your VUTEk®?

We've got the answer!

Triangle’s GRF UV curable inks are optimized for high pigment density and wide color gamut.

GRE is uniquely formulated to have excellent adhesion to a wide range of digital graphics media.
These inks are intended for jetting with high consistency, repeatibility and stability on systems based on Ricoh® G4/G5, Dimatix® Starfire™ series, Konica Minolta® 1024i™ and older, Seiko® 508GS™ and similar as well as on other prinheads in class.

CASE study

Customers Testimonial

Our customers, Our biggest value.
Thanks to them we continue to improve our products.

To access the PDF Case Study, simply fill out a short and quick form by clicking the link below:

Exceeding Your Expectations

Redefining a new standard

Extended open time, Smooth ink layer, Low Odor, No tackiness after curing. GRF is suitable for rigid and flexible substrates, Good stretchability and suitable for LED or standard UV Lamps.
Backed by INX Digital’s Worldwide Ink Train Warranty for TRIANGLE® brand ink.

Swiss Ordinance
EUPIA Compliant
Swiss Ordinance
High Flexibility
Swiss Ordinance
Eco-Friendly Packaging
Swiss Ordinance
Reliable jetting
Swiss Ordinance
Ink Train Warranty
Swiss Ordinance
Extreme color gamut range
Swiss Ordinance
Highly pigmented ink set
Swiss Ordinance
Low Odor
Colors available
Providing the right ink set

We provide the right ink set according to many different printers colors configuration. Our Process colors are based on a Clean Yellow shade and slighty violet magenta, this combination provides vibrant colors and unbeatable reds.

Light Cyan
Light Magenta
Light Yellow
Light Black

Light Fastness

A professional answer is required

The most commonly used method of measuring light fastness of a printed material is to expose it to a special artificial light with a spectrum similar to the sun light. Material sample will be exposed together with a special wool counter-sample printed with 8 grades of Blue dye (Blue Wool Scale).


Cyan: 7-8
Magenta: 7
Yellow: 7-8
Black: 8
Light Cyan: 7
Light Magenta: 6-7
Light Yellow: 7
Light Black: 7-8

Swiss Ordinance 817.023.21 for Packaging Inks

The Swiss Federal Department of Home Affairs (DFI) adopted in March 2008 an amendment to the Ordinance of 23 November 2005 on Materials and Objects in Contact with Food (SR 817.023.21). It entered into force on 4 January 2010 and lays down the obligation for packaging inks to be manufactured only with the authorized substances. Permitted substances are defined as those listed in Annex 2 Lists I and II and in Annex 10, December 2020.

The lists in the Ordinance simply states that the substances may be used in the manufacture of printing inks. To ensure safety in accordance with the law, the migration limits for substances must not be exceeded for final packaging. Guides of Good Practice for the manufacture and printing of printing inks should be followed.

Substances listed with status 'B' may be used, provided that the final packaging is in compliance with the requirements of the Ordinance, i.e. the migration of the listed substances cannot be detected using a valid and official analytical method. The migration should not be greater than 0.01 mg / kg (10 ppb).

INX carried out a review of the raw materials used in the products below to determine their status with respect to the Swiss Ordinance and found that the products below meet the Swiss Ordinance Annex 10.

Accordingly, it does not automatically mean that the product or substance is toxicologically suitable to be used for printing inks for all types of food packaging. 

EN 71–3:2019+A1:2021 Toy Safety Standard
This product is formulated from ingredients whose chemistry excludes the nineteen elements regulated by EN 71 Part 3:2019+A1:2021 (Appendix B).
Like all synthetic and naturally occurring chemical substances, raw materials, as received from our suppliers, may conceivably contain trace amounts of these metals. It is recommended to prove if the thresholds for metals are respected.

INX Digital
is dedicated to the development of UV inks and proudly commits to formulating future products without the use of TPO (Triphenylphosphine Oxide), underscoring our commitment to environmental sustainability and meeting evolving industry standards.

Introduction, what is TPO?
All energy curable inks, including UVCurable, use a component called photo-initiator to trigger the reaction of curing, transforming a liquid into a solid film; such reaction is the polymerization. There are many photo-initiators, but the ink-jet inks manufacturing industry uses TPO for the majority of the times. INX Digital is no exception. TPO typically refers to “Triphenylphosphine Oxide,” which is a photoinitiator. Photoinitiators like TPO play a crucial role in the curing process of the ink when exposed to UV light, initiating the reaction that transforms the liquid ink into a solid coating. However, it comes with some toxicological concern.

Health concerns related to TPO
TPO went through an analytical consideration by European authorities for quite some time during the past few years, and a decision was made recently for a reclassification, due to increased toxicity concerns. The European Chemicals Agency’s new legislation recommends classifying TPO as Reprotoxic 1B, reflecting potential harm to fertility and the unborn child. Already classified in the USA and some Asian countries, the process is happening in Europe, where TPO now requires additional safety concern exposures (on Safety Data Sheets), like mentioning that TPO is enlisted in the SVHC list (Substance of Very High Concern) from REACH.

EuPIA and Exclusion Policy
INX Europe Ltd is an associate member of EuPIA, and a voluntary signee of the declaration of honoring compliance with the Exclusion Policy. The Exclusion Policy applies to all types of printing inks, applied in all types of printing processes, including inkjet, and for all end use applications, and citing from the EuPIA website, “has been an important code protecting the health and safety of workers in the ink and printing industries, as well as the end users of printed materials. In 1996 the European sector group of the printing ink industry took over existing national stewardship initiatives to create the Exclusion List for Printing Inks and Related Products. It applied stricter rules to the manufacture and marketing of inks than the existing legal regulations would have required. In taking this responsibility, the European ink industry took a proactive lead for the world.INX Digital, as a division of INX Europe Ltd, will be fully compliant with this policy.

TPO in EuPIA Exclusion Policy List
With this reclassification taking place, TPO has been enlisted in the EuPIA Exclusion Policy List of restricted materials, and all members who have voluntarily signed for being compliant, need to remove this component from their formulations.INX Digital is now extensively working to remove TPO from all formulations, including ink-jet inks. All UVCurable inks will undergo a reformulation for being safer and healthier for workers and end users.



One Product, many Markets

Our products provides the best perfomances required by different applications and markets. Discover how many applications you could cover with this product.

How to handle?
Follow these simple instructions


GRE White
Available in 
GRF Light Black
Available in 
GRF Light Yellow
Available in 
GRF Light Magenta
Available in 
GRF Yellow
Available in 
GRF Light Cyan
Available in 
GRF Black
Available in 
GRF Magenta
Available in 
GRF Cyan
Available in 


Meeting our customers' needs

Our commitment is to provide the most common and used packaging's types available. Find the package that fits your needs.

5 LT Bag-in-Box
Available in:
SET-UP your plan
just choose the quantity per color and the scheduled delivery time

Easyink will allow you to receive the desired amount of ink on a scheduled basis.
Just select the quantity by color type, and you'll automatically receive the desired ink on a monthly basis.

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You can find here additional details

Read more about this product, you will find useful info and technical details about it, as theTemperature exposure and Jetting, Storage conditions, Shelf Life, and more.


UV Curable inks are formulated to achieve optimum adhesion on commonly used flexible and rigid display graphics media as well as Acrylics and Polycarbonate. Specific media such as PE can be problematic so the customer should test these materials before the conversion. Many times the use of BondAid adhesion promoters can fix adhesion issues.


No temperature adjustments required during conversion. Inks can be used in jetting equipment with temperatures up to 60°C. Prolonged exposure to temperatures above 55°C however, should be avoided as long-term exposure to high temperatures can induce premature polymerization.


These inks should be stored between 15° - 30°C (59° - 86°F). When stored properly inks have a 12 month shelf life.


UV Ink Train Conditioner - Monomer based flushing fluid.
UV Wiping Fluid - Wiping fluid for servicing head nozzle plates - External use only.
Warning: All UV Curable inks have limited compatibility with solvents. Adding solvents for any extended period of time into the ink train may cause premature curing.

Schedule delivery.
Every one, two, or three Months

Triangle’s GRF UV curable inks are optimized for high pigment density and wide color gamut.

GRE is uniquely formulated to have excellent adhesion to a wide range of digital graphics media.
These inks are intended for jetting with high consistency, repeatibility and stability on systems based on Ricoh® G4/G5, Dimatix® Starfire™ series, Konica Minolta® 1024i™ and older, Seiko® 508GS™ and similar as well as on other prinheads in class.

related product

Improve your printer performance
UV Wiping Fluid
UV Wiping Fluid

UV Wiping fluid is solvent compatible with our inks and it is used exclusively for maintenance processes outside of ink system.


This fluid is flush used for ink system conditioning for UV printers.


This product was formulated to improve adhesion between UV curable ink and metal, glass and tile.


This product was formulated to improve adhesion between UV curable ink on plastic substrates like acrylic and styrene.

MW Cleaning .5%
MW Cleaning .5%

This is a technical fluid used for long term maintenance.

Efi VUTEk Electronics RFID
Efi VUTEk Electronics RFID

5 Liters RFID Replacement for Efi® VUTEk® GS™ & QS™

Elevate your
Printing Precision

Introducing HSI inks for the Inca Onset, engineered for enhanced stability, ensuring consistent performance.

Experience uniform color reproduction, superior adhesion, and flexibility.Our digital R&D team crafted HSI to optimize print production, delivering outstanding performance with minimal maintenance.

All this at a fraction of the cost of OEM ink!

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