Deinking of Digital Prints: INGEDE Actions


Next International Round Table Deinkability of Digital Prints is planned for fall 2014.

Environmentally Friendly Premiere before IPEX:
First Web-fed Aqueous Inkjet is “Good Deinkable” without Pre-treatment

INGEDE Press Release 1/2014 (24 March 2014)



INGEDE at NIP29 in Seattle Sept 29—Oct 3, 2013:
Axel Fischer presented about The new EU Ecolabel for Printed Products and its Requirements for Deinkability on Oct 2, and gave a tutorial on Paper Recycling and Ecolabels, Deinking, and Deinkability.

NIP28 BannerNIP28: The 28th International Congress on Digital Printing Technologies,
September 9–13, 2012, Quebec City, Canada.



Axel Fischer of INGEDE gave a tutorial on paper recycling and deinking (Short Course SC09-S3: Paper Recycling and Deinking on Sunday, Sept 9) and presented about New Deinkable Water based Inkjet Inks; Dennis Voss of PMV presented about Deinking of Recovered Paper Mixtures Containing Digital Prints—Challenges and Prospects.

INGEDE at the 2011 Spring meeting of the American Chemical Society

Andreas Faul presented "Simulating a Deinking plant in the lab" in a session dealing with deinking. Other presenters came from PMV, Darmstadt, Germany and from Hewlett Packard, from Georgia Tech and Western Michigan University.

Andreas Faul's presentation can be downloaded here:

DPDA–INGEDE Letter of Intent:
Collaboration on Deinkability of Inkjet Prints

INGEDE Press Release 1/2011 (25 March 2011)

"Accidental Deinking Trial":
Liquid Toner Prints (HP Indigo) Cause Significant Damage in German Paper Mill

INGEDE Press Release 3/2010 (11 November 2010)

INGEDE at NIP26 in Austin in October 2010

INGEDE welcomes necessary research activities
towards deinkability of inkjet printed paper

INGEDE Press Release 2/2010 (6 August 2010)

IMI’s 3rd Digital Printing Presses – The Next Era Conference
on June 9-11, 2010
in Kissimmee (Orlando), Florida.
Download program here
Axel Fischer of INGEDE presented about
"Digital Prints – Are They Recyclable?"

Environmentally Friendly Premiere at IPEX:
Two New Inkjet Printers are "Good Deinkable"

INGEDE Press Release 1/2010 (19 May 2010)

INGEDE at NIP25 in Louisville

Hou T. Ng of HP (left) presented first results of lab experiments with variations of the deinking chemistry in order to improve the deinkability of inkjet and liquid toner. With drastically reduced yields for conventional offset prints (the majortiy of the recovered paper), this concept is still premature but an interesting approach to be further looked into. Axel Fischer of INGEDE, chairman of the environmental session, also presented about INGEDE's new deinkability certificate and how deinkability has been adopted as a necessary feature for eco-labels for printed products in Europe.

IMI's 18th Annual Ink Jet Printing Conference, February 4–6, 2009, Foster City, California, USA. The only U.S. ink jet printing industry event devoted entirely to ink jet printing technologies, markets and applications.
Axel Fischer of INGEDE presented on "From The Press to Paper Recycling: Why Inkjet Inks Must Be Deinkable". The presentation is available for download here:

"Digital faces clean-up test": Barney Cox reports about the different views about the environmental impact of inkjet and liquid toner (Indigo) prints
(PrintWeek 16 January 2009)

INGEDE at NIP24 in Pittsburgh


Axel Fischer of INGEDE gave a presentation on "Investigations of Deinkability and Ink-Paper Interactions" in the session about "Environmental Issues: regulations, green labeling, recycling, remanufacturing" on Wednesday, Sep 10, 2008.

The most important conclusions: INGEDE tested samples from drupa to find the first deinkable inkjet. And liquid toner remains a lot more difficult to deink than dry toner. This has been confirmed by a new test series.

Drupa 2008 has been called "the inkjet drupa" (see e. g. American Printer 8/2007). INGEDE tries to inform publishers and journalists about the problems that inkjet prints create during recycling and why undeinkable inkjet should be avoided for high volumes such as newspapers and direct mail.

INGEDE published a press release addressing the problems that prints with waterbased inkjet impose for paper recycling.

A recent press release picks up incorrect claims by HP in environmental brochures distributed at drupa: "Dry toners far better deinkable than liquid toner".

Just discovered: Spare a thought for the paper recycler. An article by Bob Thompson of 1998! Explains nicely already the problems that waterbased create in flotation deinking (and why they create these problems). Only the dry toner part is outdated, these have improved alot since, especially in the production machines.

Inkjet inks and liquid toner are difficult to deink –
dry toners do it better

A new technical document by the "Technical Committee Deinking" is in German only as it is a statement of a German committee. One part of it deals with digital printing. The conclusion is a recommendation not to invest into liquid toner or inkjet technologies for production printing unless the deinkability questions have been solved. This document has been agreed upon with the German Printing and Media Industries Federation and other members of the paper chain in Germany who together with INGEDE have set up this "Technical Committee Deinking".

Informal English translation of the German text

Recycling – What can the printing industry do to make it easier?

INTERGRAF, the International Confederation for Printing and Allied Industries, has published a brochure about the "Recycling of Printed Products". INGEDE was not involved in this document. From about p. 29 you find a chapter on interactions with the deinking process. We do not share the opinion on specks from toner based prints, at least not for current production range equipment. This opinion must be based on some more historic SOHO printer based test. What we do share is the opinion on waterbased inks and inkjet inks.

INTERGRAF brochure (copy on INGEDE's server; the document on the paperrecovery website has been moved)

the INTERGRAF website

Xeikon includes subject of deinkability into their drupa booth: Video statement

Technische Universtät Darmstadt investigated into the difficulties of removing various types of ink. Dr. Lode Deprez, Vice President Toner & Developer Group Punch Graphix Xeikon, gives "hdm at drupa" the big picture.

European Cost Action

The EU COST Action E46:
Improvements in the understanding and use of deinking technology

Memorandum of Understanding (copy on INGEDE's server)

COST E46 EU website

COST E46 Detailed Website

CTP Actions

List of Training courses on CTP's website



If you have any questions, do not hesitate to contact us!