Patent ID: 11947282
Assignee: LEXMARK INTERNATIONAL, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A system for an electrophotographic image forming device, comprising:
a toner container having a reservoir for storing toner;
an impact member configured to selectively impart an impulse force on the toner container to cause vibration of the toner container;
a sensor configured to sense the vibration of the toner container upon the impact member imparting the impulse force on the toner container; and
processing circuitry in communication with the sensor and configured to determine an estimate of an amount of toner in the reservoir based on the sensed vibration of the toner container,
wherein the sensor is positioned at a first side of the toner container and the impact member is positioned to impart the impulse force on a second side of the toner container, the first side of the toner container and the second side of the toner container are positioned at opposite ends of the reservoir.