Patent ID: 9266343
Filing Date: 2016-02-23
CPC Classification: B41J

Claim Text:
1. An ink pack formed by joining films into a form of a bag for sealing an ultraviolet curable ink therein, the ink pack comprising: the films have a multilayer structure that includes a base layer of resin which an ultraviolet ray enters and a light-shielding layer laminated on the base layer, and are joined to each other at end portions of the base layers, the films each having an extended portion as a portion of the light-shielding layer extending from the base layer, the extended portions being directly joined to each other, and wherein one of the extended portions is folded back and joined at the end portion of other films by using the one of the extended portions for wrapping the end portion of other films, thus prevents entry of the ultraviolet ray through the base layer into an inside of the bag.