Printing fluid container
AssigneeHewlett-Packard Development Company, L.P.
InventorsCarlos Chover Lopez, Francesc Ros Cerro, Joan-Albert Miravet Jimenez
Life of this patent
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Abstract
An example printing fluid container (100) comprising a container body (102) defining a cavity (104), and a piston (106) located within the cavity (104), is described. The piston (106) divides the cavity (104) into a first chamber (108) to receive printing fluid and a second chamber (110), fluidically isolated from the first chamber (108), to receive a positively pressurized fluid.
Claims20
A printing fluid apparatus comprising:
- a printing fluid chamber to receive a variable amount of positively pressurized printing fluid;
- a piston slidably disposed in the printing fluid chamber to divide the chamber into two sections, the sections each having a variable volume based on position of the piston in the chamber;
- a fluid level detector to generate a signal indicative of an amount of printing fluid in the printing fluid chamber;
- a printing fluid pump to pump printing fluid into a first section of the printing fluid chamber on the basis of the signal generated by the fluid level detector;
- and
- a second fluid pump to pump a second fluid into a second section of the printing fluid chamber to move the piston.
A method of operating a printing fluid apparatus, the printing fluid apparatus comprising a chamber to receive a variable amount of positively pressurized printing fluid, the method comprising:
- generating a signal indicative of an amount of printing fluid in the chamber;
- operating a pump to pump printing fluid into the chamber on the basis of the generated signal;
- and
- applying pressure to the printing fluid in the chamber by pumping, with a second pump, a second fluid into the chamber, the chamber being separated by a piston into a first section containing the printing fluid and a second section containing pressurized fluid delivered by the second pump, the piston applying pressure to the printing fluid under influence of the piston and pressurized fluid in the second section acting on the piston.
A printing fluid container comprising:
- a container body defining a cavity;
- a piston located within the cavity, the piston dividing the cavity into a first chamber to receive printing fluid and a second chamber, fluidically isolated from the first chamber, to receive a positively pressurized fluid;
- and
- a fluid level detector to indicate a level of printing fluid in the first chamber based on proximity of the piston to a sensor of the fluid level detector.
Dependencies are inferred from the claim text.