Method for printing a substrate with radiation curable ink, and an ink suitable for application in the said method

a technology of curable ink and substrate, which is applied in the field of printing a substrate with radiation curable ink, can solve the problems of inability to print inkjet printing, inability to meet the requirements of printing, and inability to achieve the effect of ensuring the quality of printing, avoiding the spread of ink, and enabling the fine-tuning of the dot gain

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a technology of curable ink and substrate, which is applied in the field of printing a substrate with radiation curable ink, can solve the problems of inability to print inkjet printing, inability to meet the requirements of printing, and inability to achieve the effect of ensuring the quality of printing, avoiding the spread of ink, and enabling the fine-tuning of the dot gain

US20070058020A1Inactive Publication Date: 2007-03-15OCE TECH

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example 1

[0036] A UV-curable ink has been made that is based on a carrier composition comprising 36,5 weight % 1,6-hexanediol-ethoxylate-diacrylate (see Formula 1 here-beneath), 36,5 weight % di-trimethylolpropane tetraacrylate (see Formula 2), 18 weight % N-vinylcaprolactam (see Formula 3) and 9 weight % of the photoinitiator 2 para tolyl-2-(dimethylamino)-4′-morfolinobutyrofenon available (at Ciba Specialty Chemicals, Basel, Switzerland) under the tradename Irgacure 379. To this carrier composition 1.5 parts per hundred parts carrier composition (1.5 phr) carbon black is added as a marking material. This carbon black is available as Nipex 150 at Degussa AG Germany, and is dispersed using Solsperse 39000 (1 part per part carbon black) and Solsperse 5000 (1 part per 4 parts Carbon black) both available from Noveon Inc., USA with 2-butanone as the dispersing medium. Next to this 1.5 phr stearon (i.e., (C17H35)2C═O) is added as a gelling agent. Note that stearone as a compound for inkjet inks ...

example 2

[0038] A second UV-curable ink has been made that is based on a carrier composition comprising 4.9 weight % Limoneen dioxide (LDO) (available from Arkema Inc, Philadelphia, USA), 24.9 weight % Bis{[1-ethyl(3-oxetanil)]methyl}ether (available as OXT-221 from DKSH-Market Intelligence, Zurich, Switzerland), 20.0 weight % Bis-(3-4-epoxycyclohexylmethyl)adipate (available as UVR-6128 from Dow Chemicals, Horgen, Switzerland), 32.35 weight % (m / m) 3-ethyl-3-phenoxymethyl-oxetane (available as OXT-211 from DKSH-market intelligence, Zurich, Switzerland). The carrier composition further comprises 1.25 weight % Carbon black, 1.5 % 2-ethyl-9,10-dimethoxy anthracene (available from Sigma-Aldrich, St.-Louis, USA), 15% Photo initiator Chivacure 1172 (available from Double Bond Chemical, Tapei Taiwan) and 0.1 % Byk UV3510 (available from Byk Chemie GmbH, Wesel, Germany). As a gelling agent 2 phr stearon is added. This ink can be used in the same way as the ink described under example 1.

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Abstract

A method for printing a substrate with radiation curable ink supported on a substrate which includes the steps of providing an inkjet print head at an operating temperature, jetting droplets of the curable ink from the inkjet print head onto the substrate, controlling the interaction between the ink and the substrate, and then curing the ink received on the substrate by directing radiation toward the substrate, wherein the controlling of the interaction is provided for by applying an ink comprising a carrier composition and an agent that is able to reversibly gel the carrier composition, which agent is soluble in the carrier composition at the operating temperature of the inkjet print head and gels the ink when it is received on the substrate. Also provided is an ink for enabling the use of the method and a printer adapted for applying the method.

Description

[0001] This application claims priority benefit of European Patent Application No. 05107997.8 filed Sep. 1, 2005, which is hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] The present invention pertains to a method for printing a substrate with radiation curable ink which comprises providing the substrate on a support, providing an inkjet print head at an operating temperature, jetting droplets of the curable ink from the inkjet print head onto the substrate, controlling the interaction between the ink and the substrate, and then curing the ink received on the substrate by directing radiation toward the substrate. The present invention also pertains to an ink suitable for application in the present method and a printer for applying the method. [0003] Such a method is known from European patent EP 1 349 733, issued Nov. 10, 2004 as well as from U.S. Pat. No. 6,145,979 issued Nov. 14, 2000. Radiation curable inks have become widely considered in recent years as the...

Claims

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Application Information

Patent Timeline

15 Mar 2007

Publication

US20070058020A1

IPC: B41J2/01

CPC: C09D11/101; C09D11/38; C09D11/34

Inventors: WETJENS, PETER M.A.; VERCOULEN, GERARDUS C.P.