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Ink Jet Substrates |
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Substrate
is a term used to describe the material an ink jet printer prints
on. Most substrates can be categorized as porous or non-porous.
A porous surface accepts ink readily. Corrugated cartons are
a perfect example of a porous surface. Porous inks dry by absorption.
When ink is applied, it immediately “sinks” into the
substrate. Because of the nature of the substrate, ink bleed
is a factor to watch for. For DOD printing, porous ink is typically
water-based, but it may contain other chemicals to enhance its
stability. Hi-res inks are typically glycol or oil-based because
the print engines require a higher viscosity.
Non-porous surfaces do not accept ink as readily. Plastic containers
are an example. Non-porous inks dry by evaporation. When the
ink is applied, it does not permeate into the substrate. Instead,
it remains on the surface until dry. Naturally, dry time is
a critical factor for non-porous surfaces. The ink is typically
solvent-based and contains chemicals that help produce a durable
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