Patent ID: 8991994
Filing Date: 2015-03-31
Classification: B41J,C09D

Abstract:
1. An ink pack, wherein an ultraviolet curable type inkjet ink composition which contains a compound having a nitroxyl radical, and has 1.2×10 16 to 3.0×10 19 of a spin number of the nitroxyl radical in one milliliter of the ink composition, is sealed in a pack where at least one layer of an aluminum layer or an aluminum alloy layer and at least one layer of a plastic layer are laminated, wherein the ink composition includes at least one of compound selected from a group consisting of N-vinyl lactams and (meth)acrylamides, and the compound having the nitroxyl radical in the ink composition includes 4-hydroxy-2,2,6,6-tetramethyl piperidinyl-N-oxyl.