FLUID LEVEL SENSOR AND RELATED METHODS
1 Assignment
0 Petitions
Accused Products
Abstract
In an embodiment, a fluid level sensor includes a sensor plate and a current source. The fluid level sensor also includes an algorithm to bias the current source such that current applied to the sensor plate induces a maximum difference in response voltage between a dry sensor plate condition and a wet sensor plate condition.
14 Citations
39 Claims
-
1-22. -22. (canceled)
-
23. A fluid level sensor comprising:
-
a nozzle; a fluid channel; a sensor plate on a floor of the channel; and a sensor circuit to determine an ink level during a nozzle priming event that exposes the sensor plate to air drawn into the channel through the nozzle. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
-
34. An inkjet printhead comprising:
-
a nozzle, a fluid slot, and a fluid channel to fluidically couple the nozzle to the fluid slot; a sensor plate on a floor of the channel; a current source to induce a voltage response across the sensor plate; and an output sample and hold element to measure the voltage response. - View Dependent Claims (35, 36, 37, 38, 39)
-
Specification