Tone reproduction curve and developed mass per unit area control method and system

A developed mass per unit area (DMA) and tone reproduction curve (TRC) control system for a printing machine, the system comprising:

• an electrostatic voltmeter;
• an infrared densitometer;
• and
• software means operative on the printing machine to:
• read data from a sensor;
• compare the data to an acceptable range of data values;
• update a plurality of control actuators, where the data is not within the acceptable range of data values;
• determine whether the discharge ratio is within an acceptable range of discharge ratio values;
• apply new control actuators to a power supply in the printing machine, where the discharge ratio is within the acceptable range of discharge ratio values;
• and
• adjust raster output scanner exposure per an exposure formula, where the discharge ratio is not within the acceptable range of discharge ratio values.