Patent ID: 9162454
Filing Date: 2015-10-20
Classification: B41J

Abstract:
1. A printhead comprising: a nozzle plate including a plurality of nozzles in a nozzle membrane and an acoustic dampening structure, the acoustic dampening structure including a plurality of sets of air pockets located in recesses of the acoustic dampening structure and liquid flow restrictors, each set of air pockets located in the recesses of the acoustic dampening structure and liquid flow restrictors being in fluid communication with a respective one of the plurality of nozzles, each of the liquid flow restrictors including a flow restrictor layer having a porous portion that restricts liquid flow and a non-porous portion that prevents liquid flow, the porous portion of the each of the liquid flow restrictors and the corresponding nozzle defining a liquid flow path, wherein the recesses, that include the air pockets, are located between the non-porous region of the flow restrictor layer and the nozzle membrane, away from the flow path between the porous region of the flow restrictor layer and the nozzle; a plurality of liquid channels, each liquid channel being in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor; and a common liquid supply manifold in fluid communication with each of the plurality of nozzles through the associated liquid channel.