Patent ID: 11912041
Assignee: RICOH COMPANY, LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A method of operating a printhead, the method comprising:
controlling a first internal pump within the printhead, wherein the printhead comprises a plurality of jetting channels, a first manifold internal to the printhead configured to convey a print fluid from an inlet of the printhead to the jetting channels, and the first internal pump disposed at the first manifold, and wherein the first internal pump includes a first pump diaphragm that defines a wall of the first manifold, and a first actuator configured to displace the first pump diaphragm;
wherein the controlling the first internal pump comprises:
controlling the first actuator to retract the first pump diaphragm to draw the print fluid into the first manifold through the inlet; and
controlling the first actuator to extend the first pump diaphragm to discharge the print fluid from the first manifold to the jetting channels.