Vtref Compensation

To maintain a constant/proper toner density, the toner density in the developer must be controlled as well as the bias control. Vtref is the target of the toner density in the developer.

• Vtref Determination
  With the output of the ID sensor and the TD sensor (µ sensor) in ID sensor detection, the machine determines the Vtref used for the reference value for the TD sensor (µ sensor).