Patent ID: 7794069
Filing Date: 2010-09-14
Classification: B41J

Abstract:
1. An ink cartridge, comprising: an ink chamber configured to store ink, the ink chamber comprises: a light blocking layer disposed within the second chamber of the ink chamber; and an ink supply path configured to supply ink stored in the ink chamber to an exterior of the ink cartridge, wherein the light blocking layer has fluidity and is insoluble to ink stored in the ink chamber, wherein a density of the light blocking layer is less than a density of ink stored in the ink chamber, wherein the second chamber is in fluid communication with the first chamber via each of the first communication hole and the second communication hole, wherein a level of ink stored in the second chamber moves in the height direction in accordance with a change of an amount of ink stored in the second chamber when ink is supplied from the ink chamber to the exterior of the ink cartridge, and wherein an area of each of the first communication hole and the second communication hole is smaller than a cross-sectional area of the second chamber taken along a direction perpendicular to the height direction.