Patent ID: 8454144

Claim:
A reservoir for a printhead in an ink jet printing machine, the printhead being formed by a stack of plates that define an ink flowpath to a plurality of inkjet nozzles from at least one printhead inlet at a rear face thereof for flow of ink from the reservoir into the printhead, the reservoir comprising: a perimeter wall directly bonded to the rear face of the stack of plates forming the printhead to sealably mount the perimeter wall to the printhead and to define a chamber formed by the perimeter wall and the rear face of the printhead only, the chamber being in communication with the printhead inlet and open at one face; a resilient flexible membrane alone being bonded to said perimeter wall to cover and seal said one open face of the chamber without forming another chamber between the resilient flexible member and another structure contacting the perimeter wall; and an inlet configured for connection to an external ink supply within the inkjet printing machine, the inlet being in communication with said chamber to enable passage of ink from the external ink supply into said chamber.