US 11,982,974 B2
Flexible printed material
Boris Kaziev, Ness Ziona (IL); Inna Tzomik, Ness Ziona (IL); and Faina Kogan, Ness Ziona (IL)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/417,421
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jul. 18, 2019, PCT No. PCT/US2019/042427
§ 371(c)(1), (2) Date Jun. 23, 2021,
PCT Pub. No. WO2021/011006, PCT Pub. Date Jan. 21, 2021.
Prior Publication US 2022/0091520 A1, Mar. 24, 2022
Int. Cl. G03G 8/00 (2006.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01); G03G 5/14 (2006.01); G03G 5/147 (2006.01); G03G 9/13 (2006.01)
CPC G03G 8/00 (2013.01) [C09D 11/101 (2013.01); C09D 11/107 (2013.01); G03G 5/14 (2013.01); G03G 5/147 (2013.01); G03G 9/13 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of forming a flexible printed material, comprising:
applying a layer of primer onto a flexible substrate;
electrostatically printing onto the layer of primer a liquid electrostatic ink composition;
applying a curable overprint varnish composition onto the printed electrostatic ink composition, wherein the curable overprint varnish composition comprises an ethylenically unsaturated monomer, an ethylenically unsaturated oligomer, or mixtures thereof, and 10 wt. % or less of a cross-linking additive based on the total weight of the curable overprint varnish composition; and
curing the overprint varnish composition using electron beam irradiation.