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RadTech
UV/EB Technology Conference & Expo 2008
May 4-7, 2008
Lakeside Center at McCormick Place
Chicago, Illinois - United States of America
INKJET
Challenges of Obtaining
Valid Particle Size Data in Inkjet Inks
Jeremy Powers, Plasticolors, Inc.
Abstract:
For digital inkjet inks, particle size analysis is important to ensure
proper jetting of the ink through the printer head and is an indicator
of color development and transparency. The measurement of particle
size of pigments in the nanometer range, such as those used in inkjet
inks, brings with it a number of challenges. In this paper, the authors
briefly review particle size measurement methodologies and will specifically
address the challenges faced by formulators and analysts when making
these measurements. In order to obtain meaningful information, one
must understand the measurement principles and limitations of the
methodology selected, the criticality of sample preparation, and understand
the measurement parameters and variables and how they can affect the
results. Examples will be used to illustrate the potential impact
of many of these variables and recommendations will be offered to
assist formulators and analysts collect valid data from which meaningful
information can be drawn.
Developments
in Solid State UV Curing Systems for UV Inkjet Printing
Tom Molamphy, Phoseon Technology
Abstract: The paper will highlight many of the practical
issues involved when applying solid state UV curing systems (such
as UV-LED based systems) to UV Inkjet printing. The paper will outline
some examples of application in wide format "moving head"
UV systems as well as narrow format "fixed head" UV. The
paper will outline applications as they relate to the use of both
inert and non-inert environments.
Dual
Cure Digital Inks for Industrial Printing
Sudhakar Madhusoodhanan, Hexion Specialty
Chemicals
Abstract: UV curable inkjet inks are required to adhere to
myriad substrates such as plastics, metals, glass, and ceramics.
In addition, they are also expected to exhibit good flexibility,
abrasion and chemical resistance. Multiple substrate adhesion coupled
with rapid turnaround times for digitally printed UV curable inks
opens up promising avenues for industrial inkjet printing. This
paper highlights the careful balance required in ink formulation
and properties to meet the varying requirements.
UV
Curable Inkjet Inks: Is There Anything They CAN'T Do?
Sara Edison, Hexion Specialty Chemical,
Inc.
Abstract: Increasingly, the answer to this question is "not
much!" The printing market continually presents new challenges
and formulators of UV-curable inkjet inks have risen to the occasion
by providing multipurpose inks. It's now possible to digitally print
on most substrates. Clear inks provide abrasion resistance with
variable-gloss finishes. Formable inks may be printed on flat stock
and post-formed. Low-dose curing inks can be printed in rapid, single-pass
mode, and phase-change inks allow for wet-on-wet printing.
3D Ink-Jet printing of photopolymers as a method of producing novel Composite Materials
Eduardo Napadensky , Object
Abstract:
Additive type technologies, such as 3D Ink-Jet printing of photopolymers, enable the building of 3 dimensional objects directly from Computer Aided Design (CAD) data, thus considerably shortening the design and development process of many articles. Today, new breakthrough technologies are enabling the incorporation of CAD also in the design and development of novel, fully UV-curable composite materials, with properties that could not have been achieved in the past using the former single material building technologies These composite materials are formed during the course of the layer by layer 3D Ink-Jet printing process, by the selective and simultaneous deposition of two different UV-curable materials.
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