Patent ID: 8303097
Filing Date: 2012-11-06
Classification: B41J

Abstract:
1. An ink cartridge for an ink jet printer, comprising an ink storage chamber formed by a concave housing and a flexible and deformable film, a fluid outlet connected with a fluid inlet of the printer, an information storage device, a locking mechanism, and a detection mechanism for detecting ink consumption, wherein the detection mechanism comprises a lever component positioned in the ink storage chamber and a force transmission component positioned on the housing, made of deformable material and communicated with the ink storage chamber, when ink is received in the ink storage chamber, the force transmission component transmits a pressure applied by a pressure detection device of the printer to the lever component by means of deformation itself, and the lever component limits further movement of the pressure detection device of the printer to show that the ink cartridge has the ink; and when the ink in the ink storage chamber is gradually consumed to a predetermined value, the lever component is pressed by the flexible and deformable film and moves to a predetermined position, thus the force transmission component cannot transmit the pressure applied by the pressure detection device of the printer to the lever component, and the pressure detection device of the printer freely stretches in a predetermined range to prompt that the ink in the ink cartridge is used up.