Patent ID: 8511804
Filing Date: 2013-08-20
Classification: B41J,Y10T

Abstract:
1. An ink cartridge for an ink jet printer, comprising a cartridge body and a detection mechanism for detecting installation of the ink cartridge and residual quantity of ink, wherein the cartridge body comprises an ink tank for storing ink, an ink outlet for supplying ink to a printing head of the printer and an air inlet, the ink tank comprises a first ink chamber and a second ink chamber, a first negative pressure mechanism is arranged between the first ink chamber and the second ink chamber, the ink cartridge is characterized in that a second negative pressure mechanism is further arranged between the first ink chamber and the second ink chamber, the first negative pressure mechanism and the second negative pressure mechanism cooperatively control the ink inside the first ink chamber to be consumed preferentially than the ink inside the second ink chamber, and the second negative pressure mechanism generates negative pressure in the second ink chamber by sealing the second ink chamber from the first ink chamber only when a certain quantity of ink inside the ink tank is reached; wherein a front wall of the cartridge body, on which the ink outlet is arranged, is provided with an elastic component, one end of the elastic component is fixedly connected with the front wall of the cartridge body, the other end of the elastic component is capable of reach a wall of an accommodation space of the ink cartridge of the printer by bending the elastic component, the elastic component is provided with a support position, and a movable rod member is supported by the support position on the elastic component.