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US 10,899,124 B2Granted
To determine a quantity of a liquid in a chamber
AssigneeHP Indigo B.V.
InventorsMark Sandler, Peter Nedelin, Yaron Peri
Life of this patent
Estimating the term…
Abstract
A method to determine a quantity of a liquid in a container. In the method, a actuator is controlled to rotate a member in the container at a first speed. A measurement of electrical current drawn by the actuator at the first speed is received. A quantity of liquid in the container is determined through a look-up table and the measured electrical current.
Claims14
A method to determine a quantity of a liquid in a chamber, the method comprising:
- controlling a motor to rotate a mixer in the chamber at a first speed;
- receiving a measurement of electrical current drawn by the motor at the first speed;
- determining a quantity of liquid in the chamber by referring to a look-up table, the look-up table comprising correlations between the electrical current drawn by the motor, the speed of the mixer, the density of the liquid in the chamber, and the quantity of the liquid within the mixing chamber, wherein the liquid in the chamber comprises a first liquid and a second liquid, the motor causing the mixer to mix the first liquid and the second liquid;
- and
- supplying the mixed first liquid and second liquid to at least one component for applying the mixed liquid to media;
- wherein determining a quality of liquid in the chamber comprises determining the viscosity of the liquid comprising:
- controlling the motor to rotate the mixer in the chamber at a second speed;
- receiving a measurement of electrical current drawn by the motor at the second speed;
- and
- determining, based on the look-up table and the measured electrical current, the quantity of liquid and a viscosity of the liquid in the chamber.
7 more elements
A non-transitory computer-readable storage medium encoded with instructions that, when performed by a processor, cause performance of:
- controlling a motor to rotate a mixer in a chamber at a first speed;
- receiving a measurement of electrical current drawn by the motor at the first speed;
- and
- determining a quantity of liquid in the chamber by referring to a look-up table, the look-up table comprising correlations between the electrical current drawn by the motor, the speed of the mixer, the density of the liquid in the chamber, and the quantity of the liquid within the mixing chamber, wherein the liquid in the chamber comprises a first liquid and a second liquid, the motor causing the mixer to mix the first liquid and the second liquid and wherein the first liquid and the second liquid are two components of a printing fluid;
- determining, through the look-up table and the measured electrical current, that the mixer is not coupled to the motor;
- preventing supply of a material where it is determined that the mixer is not coupled to the motor;
- and
- supplying the mixed first liquid and second liquid to at least one printing component for applying the mixed liquid to media.
5 more elements
An apparatus to determine a property of a liquid in a container, the apparatus comprising:
- a controller;
- and
- a motor communicatively coupled to the controller;
- wherein the controller is configured to:
- control the motor to move a mixing arm in the container at a first speed;
- receive a first measurement of electrical current drawn by the motor at the first speed;
- control the motor to move the mixing arm in the container at a second speed different from the first speed;
- receive a second measurement of the electrical current drawn by the motor at the second speed;
- determine a property of liquid in the chamber by referring to a look-up table, the look-up table comprising correlations between the electrical current drawn by the motor, the speed of the mixer, the density of the liquid in the chamber, and the quantity of the liquid within the mixing chamber and the first and second measured electrical currents, wherein the liquid in the chamber comprises a first liquid and a second liquid, the motor causing the mixer to mix the first liquid and the second liquid;
- determine, through the look-up table and the measured electrical current, whether the mixer is coupled to the motor;
- prevent supply of a material in response to a determination that the mixer is not coupled to the motor;
- and
- supplying the mixed first liquid and second liquid to at least one component for applying the mixed liquid to media.
10 more elements
Dependencies are inferred from the claim text.