:Anapurna M
4F
- Operator Manual
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8
Information - Safety instructions
1.5
U.V. inks.
Make sure that you always use following safety measures when working with U.V.
inks:
Wear protective gloves (single-use)
When contacted with skin, wash off immediately
Dispose uncured ink as chemical waste
U.V. inks are chemical products which contain some additives that can cause dermati-
tis. Dermatitis is a skin desase that can become irreversible when left untreated. It oc-
curs when a substance penetrates the surface layer of the skin and provokes a reaction
from the vulnerable skin beneath. Common symptoms include:
skin redness or soreness;
itching;
rash;
cracking or peeling.
The most commonly affected parts of the body are the fingers and the webs between
the fingers, closely followed by the back of the hands.
It is very important to avoid skin contact with the U.V.
inks. Use splash-resistant gloves when there is a risk
of skin contact. Single-use nitrile gloves 0,2mm thick
are acceptable. None the less, they only will give a
short-term protection. Make sure that you dispose of
single-use gloves every time you take them off. If you
have skin contact, wash the ink off and rinse the skin
with water and soap.
Dispose uncured ink as chemical waste and never mix
solvent with U.V. ink waste. Cured U.V. ink don’t con-
tain any harmfull products and can be disposed off as
normal waste. If you spill a big puddle of ink, use an absorbant product like saw dust to
clean. Little amounts of spilled ink can be cleaned using a cloth. Don’t forget to treat
the saw dust and cloths as chemical waste (uncured inks).
The shelf life of the :Anapurna M4F
inks is 12 months (the expiry date is
mentioned on each bottle). Ideal stor-
age of inks is between 4°-10° C; the
temperature should not exceed 25°C
at any time.
a. Curing Process.
Water based and solvent based inks will dry by evaporation and/or penetration,
leaving the colorants into the media. UV Curable ink will only harden out if UV light
is exposed to the ink layer on the media. The heat that is generated by the U.V.
lamps do not influence the curing process. On non-absorbing media, this ink layer
will lay on top of the substrate. On absorbing media the ink layer will partly pen-
etrate the media, explaining the better adhesion on porous media.
The pigmented particles are dispersed in a monomer. This monomer will stay liquid
and sits in a solution together with a photo initiator and synergist.
How does it work?
When UV light is added, the photo initiator will be activated and will create a
free radical;
This free radical will be passed onto the synergist;
From then the synergist will be active and will bind with the monomer;
Now a chain reaction is started and the monomers will crosslink to each oth-
er, causing the ink film to get polymerized. The pigments are captured in this
chain.
1.6
Extra information.
SDS-sheets (Safety Data Sheets) about Agfa U.V. inks and the pre-site survey
document, explaining the re-commended working and installation conditions, are
available through your local reseller.
Uncured U.V. inks = chemical waste
Cured U.V. inks = normal waste
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