Techniques are described for reducing or eliminating a bow in a plastic card that results from applying radiation, such as UV radiation, to a surface of the plastic card to cure radiation curable material that has been applied to the surface. In one embodiment, after printing of all radiation curable material on the plastic card is completed, radiation is applied to both surfaces of the plastic card. After applying the radiation, the plastic card complies with ISO 7810:2019, Clause 8.10.

An active energy ray curing composition can be applied to cured matter of a first active energy ray curing composition. The active energy ray curing composition contains a second active energy ray curing composition containing a monofunctional monomer, a polyfunctional monomer, and a photopolymerization initiator. The proportion of the polyfunctional monomer to the second active energy ray composition is 60 percent by mass or more. The proportion of the polyfunctional monomer modified with the same number of an oxyalkylene group as the number of functional groups of the polyfunctional monomer is 90 percent by mass of the polyfunctional monomer, and the proportion of a tri- or higher polyfunctional monomer is 50 percent by mass or more to the modified polyfunctional monomer.

An ink jet recording method including a step of preparing an ink containing water and particles including a polymer P and a polymerizable monomer M wherein the polymerizable monomer M includes a monomer (M-1) having a viscosity at 25° C. of 500 mPa.Math.s or less and a content of the monomer (M-1) relative to a total solid content of the particles is 25 mass % to 80 mass %; an application step of applying, onto a substrate, the ink by an ink jet process; and an irradiation step of irradiating the ink having been applied onto the substrate, with an actinic energy ray, wherein a time from landing of the ink onto the substrate to starting of the irradiation with the actinic energy ray is 1.00 second or less.

Provided are pre-coat formulations, ink formulations, ink systems and printing methods for patterning a surface with a desired pattern.

Ink jet printing on a non-absorbent substrate involves a wet primer having a primer viscosity. The wet primer is applied on the non-absorbent substrate. An ink jet ink having an ink jet viscosity lower than the primer viscosity is jetted over the wet primer while the primer is still wet. The wet primer and ink are simultaneously cured on the substrate.

An inkjet printing method for manufacturing decorative laminate panels ordered by a customer includes i) providing an inkjet printing device with a print job including one or more decorative patterns and an identification code assigned to the one or more decorative patterns; and ii) printing the one or more decorative patterns with one or more inkjet inks and applying the identification code on a substrate web, wherein the substrate web is a paper substrate and the one or more inkjet inks are aqueous pigmented inkjet inks are printed on the substrate web before impregnation with a thermosetting resin; or the one or more inkjet inks are UV curable inkjet inks and the substrate web is a thermoplastic substrate web based on a material selected from the group consisting of polyvinylchloride (PVC), polypropylene (PP), polyethylene (PE), polyethylene-terephthalate (PET) and thermoplastic polyurethane (TPU).

A printing machine includes an inkjet printing head having separately controllable nozzles for applying ink to a transported printing material, a radiation drier having radiation sources for generating electromagnetic radiation to at least partly dry and/or cure the applied ink on the transported printing material and at least one light trap disposed between the inkjet printing head and the radiation drier in such a way that the light trap forms a barrier for reflected and/or scattered radiation, thus protecting the inkjet printing head from radiation. The light trap includes at least one channel connected to an aspiration device for aspirating contaminated ambient air through the channel and reducing or preventing contamination of the radiation drier.

The present disclosure relates generally to signal encoding for flexographic printing plates. One aspect is a flexographic, photopolymer printing plate having transparent layers to allow encoded signal printed or laser ablated thereon to be detectable from both sides of the printing plate. Another aspect is a flexographic, photopolymer printing plate having an encoded signal formed in a photocured layer. Still another aspect is a system for tracking such printing plates, including managing location, print impression count, location tracking, etc. Other aspects are described as well.

A method for producing a decorative floor covering comprises digitally printing an adhesive on a printing substrate thus generating an adhesive layer forming an at least one-dimensionally patterned decorative motif. The adhesive is a radiation-curable composition, preferably essentially free from non-reactive solvents and/or from photoinitiator. The printing substrate includes one of a core structure and a wear layer. After the printing of the adhesive, the adhesive layer on the printing substrate is contacted with the other one of the core structure and the wear layer. The core structure and the wear layer are then attached to each other by electron-beam curing the adhesive layer between them.

A method for manufacturing a recorded matter includes: a first ejection step of ejecting a first ink which is a radiation curable ink jet composition; a first emission step of emitting radioactive rays to form a cured coating film of the first ink; a second ejection step of ejecting a second ink which is a radiation curable ink jet composition; a second emission step of emitting radioactive rays to cure the second ink; and a lamination step of laminating the recorded matter such that a recording surface and a non-recording surface face each other. In addition, the first ink contains a polymerizable compound including a monofunctional monomer, a content of the monofunctional monomer with respect to a total mass of the polymerizable compound contained in the first ink is 80 percent by mass or more, the first ink is a non-white ink, and the second ink is a white ink containing a titanium oxide.