Ink and method of using the ink
A pigmented ink for printing on untreated vinyl foils or substrates coated with vinyl by means of piezoelectric printing systems which include at least one heating device, wherein the ink is composed of a liquid carrier substance, water insoluble coloring agents, polymeric binding agents, drying decelerators, as well as additional additives, wherein the liquid carrier substance is composed of water and drying decelerators which are mixable in water. The liquid carrier substance has a content of at least 80% by weight water and the content of drying decelerators is composed of at least butyldiglycol and 1-metaxipropanol-2, and the ink has a pH-value of greater than 8.5.
1. A pigmented ink for printing on untreated vinyl foils or substrates coated with vinyl using piezoelectric printing systems including at least one heating device, the ink comprising
a liquid carrier substance,
water insoluble coloring agents,
polymeric binding agents,
drying decelerators,
additional additives, wherein
the liquid carrier substance is comprised of water and water mixable drying decelerators, wherein
the liquid carrier substance has a content of at least 80% by weight water, wherein
the content of drying decelerators is comprised of at least butyldiglycol and 1-methoxypropanol-2, and wherein the ink has a pH-value of greater than 8.5, further comprising wetting agents selected from fluorotensides, silicon tensides and fatty alcohol polyglycol ethers.
2. The ink according to claim 1 , further comprising a pH-regulator, wherein the pH-regulator is an amine or amine-containing substance, and wherein the amine or the amine-containing substance is basic.
3. The ink according to claim 2 , wherein the amine is a dimethylethanol amine, a triethanol amine, an ammonia solution, or a mixture of these substances.
4. The ink according to claim 1 , wherein the binding agent is present in the liquid ink in a dissolved form.
5. The ink according to claim 1 , wherein the ink comprises
20 to 90% by weight
water as solvent
5 to 40% by weight
drying decelerator
0.5 to 20% by weight
binding agent
1 to 50% by weight
coloring agent
0.5 to 10% by weight
pH regulator
0.01 to 1% by weight
conservation agent
0.05 to 2% by weight
wetting agent
0 to 5% by weight
additional additives.
6. A method of using an ink or an ink set in an ink-jet printing system which comprises
a liquid carrier substance,
water insoluble coloring agents,
polymeric binding agents,
drying decelerators,
additional additives, wherein the liquid carrier substance is comprised of water and water mixable drying decelerators, wherein
the liquid carrier substance has a content of at least 80% by weight water, wherein the content of drying decelerators is comprised of at least butyldiglycol and 1-methoxypropanol-2, and wherein the ink has a pH-value of greater than 8.5, further comprising wetting agents selected from fluorotensides, silicon tensides and fatty alcohol polyglycol ethers.
7. The method according to claim 6 , wherein a heating plate is arranged directly below and in front of and/or following a printing head of the printing system, wherein the heating plate is arranged so as to extend over an entire path traveled by the printing head.
8. The method according to claim 7 , wherein the heating plate is an infrared radiator arranged above a surface to be printed.