Patent ID: 9104134
Filing Date: 2015-08-11
Classification: G03G

Abstract:
1. A method for estimating an amount of toner remaining in a reservoir of a replaceable unit for an image forming device, the method comprising: receiving pulses from a magnetic sensor by processing circuitry on the replaceable unit, each pulse indicative that the magnetic sensor detected a magnet on a moving paddle positioned in the reservoir; counting by the processing circuitry the number of the pulses received from the magnetic sensor; and upon receiving by the processing circuitry a request from a controller of the image forming device in communication with the processing circuitry for the count of the pulses received from the magnetic sensor, sending by the processing circuitry to the controller of the image forming device the count of the pulses received from the magnetic sensor and resetting by the processing circuitry the count of the pulses received from the magnetic sensor.