Patent ID: 9090076
Filing Date: 2015-07-28
Classification: B41J

Abstract:
1. An ink cartridge used for an inkjet printer comprising a sensor, the ink cartridge comprising an ink storage chamber for storing ink, an ink outlet for supplying the printer with the ink and an air inlet for air going into the ink cartridge to maintain a pressure balance, and a detection component designed inside the ink storage chamber and arranged to block the sensor for detecting an ink level, characterized in that said ink storage chamber comprises an ink detection chamber and a relatively enclosed ink refilling chamber with an opening at a lower part; said ink refilling chamber opening is inside said ink detection chamber; said detection component is inside said ink detection chamber such that, when the ink level of the ink detection chamber goes down to a position lower than the opening of the ink refilling chamber, the detection component goes down to a position lower than the opening of the ink refilling chamber and the detection component does not block the sensor; then the ink of the ink refilling chamber is refilled into the ink detection chamber and the detection component blocks the sensor again.