Patent ID: 6758558
Filing Date: 2004-07-06
Classification: B41J

Abstract:
An ink container having a pressure stabilizer module for applications in inkjet printers, which comprises:a box having an accommodation space with one end having a plurality of nozzle devices to eject ink; and at least one pressure stabilizer modules installed inside the box for controlling the pressure of the ink, each of the pressure stabilizer modules containing: an airtight membrane installed inside the box to form an ink chamber for storing the ink; a passive plate connected to the air-tight membrane and installed on the inner side of the ink chamber; a conic spiral spring having one end connected to one side of the passive plate and is installed in such a way that it is normally depressed on the inner side of the ink chamber to provide a negative pressure; wherein as the size of the ink chamber gets smaller in use, the conic spiral spring provides a depressing force to push against the passive plate, the conic spiral spring is depressible down to the thickness of the spring wire to reduce wastage of ink, and the conic spiral spring helps maintaining the negative pressure; and a plurality of conical springs installed in parallel or in series in the box, wherein the spring wire diameter and number of coils of the conic spiral spring are determined according to the predetermined negative pressure of the ink chamber.