Uv curable inkjet inks

Patent metadata

Field	Value
Publication number	US-2017101547-A1
Application number	US-201515125232-A
Country	US
Kind code	A1
Filing date	Apr 15, 2015
Priority date	Apr 15, 2014
Publication date	Apr 13, 2017
Grant date	—

Abstract

An inkjet printing method includes the steps of: a) jetting on a substrate one or more aqueous UV curable inkjet inks including at least one photoinitiator and capsules composed of a cross-linked polymeric shell surrounding a core, with the core containing UV curable compounds; and b) applying UV radiation to the one or more aqueous UV curable inkjet inks jetted on the substrate.

First claim

1 - 15 . (canceled).

16 . An inkjet printing method comprising the steps of:
jetting one or more aqueous UV curable inkjet inks on a substrate, each of the one or more aqueous UV curable inkjet inks including at least one photoinitiator and capsules including a cross-linked polymeric shell surrounding a core that includes a UV curable compound; and applying UV radiation to the one or more aqueous UV curable inkjet inks jetted on the substrate.

17 . The inkjet printing method according to claim 16 , further comprising the step of exposing the one or more aqueous UV curable inkjet inks to infrared radiation between the step of jetting and the step of applying UV radiation.

18 . The inkjet printing method according to claim 17 , wherein the infrared radiation is emitted by an infrared radiation source having an emission maximum between 0.8 μm and 1.5 μm.

19 . The inkjet printing method according to claim 17 , wherein the infrared radiation is emitted by an infrared radiation source having an emission maximum between 2.0 μm and 3.5 μm.

20 . The inkjet printing method according to claim 17 , wherein the UV radiation is emitted by UV LEDs.

21 . The inkjet printing method according to claim 16 , wherein the UV radiation causes the UV curable compound to pass through the cross-linked polymeric shell.

22 . The inkjet printing method according to claim 16 , wherein the capsules include a colorant.

23 . The inkjet printing method according to claim 16 , wherein the capsules are dispersed in an aqueous medium using a dispersing group covalently bonded to the cross-linked polymeric shell, and the dispersing group is selected from the group consisting of a carboxylic acid or salt thereof, a sulfonic acid or salt thereof, a phosphoric acid ester or salt thereof, a phosphonic acid or salt thereof, an ammonium group, a sulfonium group, a phosphonium group, and a polyethylene oxide group.

24 . The inkjet printing method according to claim 16 , wherein the one or more aqueous UV curable inkjet inks include an optothermal converting agent for infrared radiation.

25 . The inkjet printing method according to claim 16 , wherein the at least one photoinitiator is present in the core of the capsules.

26 . The inkjet printing method according to claim 16 , wherein the one or more aqueous UV curable inkjet inks include polymeric latex particles.

27 . An inkjet printing device comprising:
an inkjet print head; an infrared radiation source located downstream of the inkjet print head; and a UV curing device located downstream of the infrared radiation source.

28 . The inkjet printing device according to claim 27 , further comprising a pre-heating device located upstream of the inkjet print head.

29 . A manufacturing line for printed textiles and leather articles comprising:
the inkjet printing device according to claim 27 to print on a textile or a leather substrate; wherein the leather substrate includes natural leather and artificial leather.

30 . A manufacturing line for packaging of foodstuffs or pharmaceuticals comprising:
the inkjet printing device according to claim 27 to print on a packaging substrate.

Assignees

• Agfa Graphics Nv

Inventors

• Loccufier Johan
• Decoster Luc

Classifications

• B41M7/0081

  using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams · CPC title

• C09D11/101 Primary

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C09D11/328

  characterised by dyes · CPC title

• B01J13/14

  Polymerisation; cross-linking · CPC title

• B01J13/16

  Interfacial polymerisation · CPC title