Patrone, insbesondere Tintenpatrone für einen Druckkopf eines Ink-Jet-Printers

摘要

An ink cartridge is disclosed including a housing (1) having an ink storage space (5) an upper portion (3) of which is closed off by a cup-shaped membrane (4) and a chamber (18) separated by a wall (17) having an opening (19) allowing ink (6) to pass between the storage space (5) and the chamber (18); and a pressure reducing valve (23) controlling the flow of ink between the storage space (5) and the chamber (18); the valve (23) comprises a protrusion (37) formed on the wall; a membrane (24) sealed to the wall (17) about an exterior edge of the membrane (24) and having a centrally located opening (36); and, a spring member (38) pressing an edge of the opening (36) in the membrane (24) against the protrusion (37) to provide a reproducible and constant closing force.