OKIDATA OL600e, Servise Manual

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Service Guide OL600e/610e/610ePS
Chapter 2 Operation Description
2.7 Toner Low Detection
• Device
The Toner Low Detection device consists of a stirring gear which rotates at a constant rate, a stirring bar,
and a magnet on the stirring bar. The stirring bar rotation is driven by the link to the protrusion in the
stirring gear.
• Operation
Toner Low is detected by monitoring the time interval of the encounter of the magnet set on the sensor
lever and the magnet on the stirring bar.
Operation during Toner Full state
• The stirring gear rotates the stirring bar.
• When toner is present, the stirring bar moves through the toner at a constant rate.
Operation during Toner Low state
• When toner is low or empty, the stirring bar rises to the maximum height and then falls to the minimum
height by its own weight. This increases the time of its encounter with the magnet on the sensor lever. By
monitoring this time interval, Toner Low can be detected.
• When the Toner Low state is detected 2 times consecutively, Toner Low is established.