Patent ID: 9067425
Filing Date: 2015-06-30
Classification: B41J

Abstract:
1. A fluid cartridge for an inkjet printer, the cartridge comprising: an inner reservoir containing a printing fluid, the reservoir comprising walls enclosing an internal space having a variable volume for storage of the printing fluid and a port for dispensing the printing liquid, wherein the reservoir comprises a rigid framework and one or more elastically deformable sections, an outlet for connection to the printer; an outer housing in which the reservoir is housed; an electronic storage device configured to store data relating to the contents of the cartridge; and at least one electrical contact associated with the electronic storage device and provided on a substrate, wherein the substrate is fixed relative to the outlet by a pocket defined on the inside of the housing and the pocket comprises at least one locking element having slots for supporting edges of the substrate; wherein the rigid framework and one or more elastically deformable sections of the reservoir provide a reduction in pressure of the internal space whereby the equilibrium pressure difference between the internal space and the surrounding atmosphere increases substantially monotonically in magnitude as liquid is dispensed, wherein the port is adapted to allow liquid to be dispensed when a withdrawal pressure at the exterior of the port is less than the equilibrium pressure of the internal space, and wherein the port is adapted to prevent air from entering the internal space from outside the reservoir as liquid is dispensed, wherein the container is for storing and dispensing ink or solvent for use with a continuous inkjet printer.