Monitoring a condition of a solid state charge device in electrostatic printing

摘要

An apparatus to monitor a condition of a solid state charge device (SSCD) useful in electrostatic printing includes a power supply and a frequency detector. The power supply provides current to the SSCD, and includes a resonant controller. The frequency detector senses a frequency associated with the current, and since the frequency is representative of the condition of the SSCD, the frequency detector thereby monitors the condition of the SSCD. A method of monitoring the condition of the SSCD includes providing current to the SSCD using a power supply, and sensing a frequency associated with the current. The power supply includes a resonant controller, and the frequency is representative of the condition of the SSCD, and thus the method thereby monitors the condition of the SSCD. A corresponding computer-readable medium is also disclosed.

主权项

1. An apparatus to monitor a load capacitance of a solid state charge device (SSCD) useful in electrostatic printing, the apparatus comprising:
a power supply, the power supply providing current to the SSCD, the power supply comprising a resonant controller; and a frequency detector, the frequency detector measuring a frequency associated with the current, the frequency being representative of the load capacitance of the SSCD, the frequency detector thereby monitoring the load capacitance of the SSCD to sense failure of the SSCD.