| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ink pack and its manufacturing method which can suppress polymerization of optically-curable ink to realize stable storage without enlarging a container size.SOLUTION: An ink pack 1 is an ink pack which stores optically-curable ink 100 including a radical polymerizable compound and a photoinitiator, and includes an oxygen-impermeable packaging bag 10 which includes a first space 21 capable of storing the optically-curable ink 100 and a second space 22 which is adjacent to the first space 21 through an oxygen-permeable gas-sealing pack 5 in the first space 21 and stores oxygen-containing gas 200. The second space 22 is controlled to have the space-inside pressure as negative.</p> |
