| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink cartridge which is excellent in bonding fixation or the like with an ink storage section and has a high detection characteristic for an amount of remaining ink, and to provide an ink jet recording device.SOLUTION: An ink cartridge has an ink storage section 12 storing the ink, a triangle prism 15 for an amount of remaining ink in the inside of the ink storage section 12 by reflecting a light from the outside of the ink storage section 12 on one of a wall composing the ink storage section 12 and a prism unit 13 including a plane section 17a fixed with one surface of the triangle prism 15. An function film for repelling ink is formed on two reflecting surfaces 16a, 16b in contact with ink in the triangle prism 15 and has no function film on at least a part of the plane section 17a. |
