Patent ID: 11970009
Assignee: ELECTRONICS FOR IMAGING, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. A printing system comprising:
a controller;
one or more printheads, wherein each printhead includes one or more inkjets having nozzles for jetting ink onto a workpiece based on a signal received from the controller;
a supply assembly for storing and delivering the ink to the one or more printheads, wherein the supply assembly includes:
a primary ink reservoir;
an ink delivery conduit for transferring the ink from the primary ink reservoir toward the one or more printheads; and
an ink delivery system including:
a secondary ink reservoir located between the primary ink reservoir and the one or more printheads;
a pressure sensor positioned on the ink delivery conduit upstream of the one or more printheads, the pressure sensor being configured to
measure pressure within the ink delivery conduit when the printing system is printing, and
output a signal corresponding to the measured pressure; and

a valve via which the secondary ink reservoir is configured to be dynamically opened to atmosphere, based on the output signal of the pressure sensor, to maintain stability as the measured pressure changes when the printing system is printing.