FLUID LEVEL SENSING APPARATUS AND METHOD OF USING THE SAME FOR INKJET PRINTING SYSTEMS

摘要

An inkjet printing system is disclosed and comprises at least one fluid reservoir containing a fluid, a fluid line that fluidly couples the at least one fluid reservoir with an imaging device, and a fluid level sensing apparatus fluidly coupled with the at least one fluid reservoir. The fluid level sensing apparatus comprises: a bottom portion having a fluid volume VB; an intermediate N portion vertically adjacent the bottom portion and having a fluid volume VI, the intermediate portion including a first fluid sensor spaced vertically from a second fluid sensor; and an upper portion vertically adjacent the intermediate portion and having a fluid volume VU, wherein VU>VI>VB. The inkjet printing system also comprises a pump fluidly coupled with the at least one fluid level sensing apparatus and configured to exert fluid pressure along the at least one fluid level sensing apparatus.

主权项

1. An inkjet printing system, comprising:
at least one fluid reservoir containing a fluid; a fluid line fluidly coupling the at least one fluid reservoir with an imaging device; and a fluid level sensing apparatus fluidly coupled with the at least one fluid reservoir and comprising:
a bottom portion having a fluid volume VB;an intermediate portion vertically adjacent the bottom portion and having a fluid volume VI, the intermediate portion including a first fluid sensor spaced vertically from a second fluid sensor; andan upper portion vertically adjacent the intermediate portion and having a fluid volume VU, wherein VU>VI>VB; and a pump fluidly coupled with the at least one fluid level sensing apparatus and configured to exert fluid pressure along the at least one fluid level sensing apparatus.