Inkjet head that circulates ink

An apparatus comprising:

• an inkjet head having a plurality of ink channels for ejecting ink, wherein each ink channel includes a nozzle, a first restrictor proximate to the nozzle, a chamber, a diaphragm, and a second restrictor proximate to the diaphragm;
• the inkjet head further includes a return manifold for circulating ink through the ink channels when the inkjet head is not ejecting the ink through the nozzles;
• wherein the first restrictor controls a flow of ink between the chamber and the return manifold;
• wherein the second restrictor controls the flow of ink between a supply manifold for the ink and the chamber.

An apparatus comprising:

• an inkjet head comprising:
• a diaphragm plate;
• a first restrictor plate;
• at least one chamber plate;
• a second restrictor plate;
• and
• an orifice plate;
• wherein the orifice plate forms a plurality of nozzles;
• wherein the at least one chamber plate forms a plurality of chambers corresponding with the nozzles, and forms a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head;
• wherein the diaphragm plate forms a diaphragm that seals the chambers;
• wherein the first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head;
• wherein the second restrictor plate controls the flow of ink between a supply manifold and the chambers.