System and method for metallic object detection in a media transport system

A system for detecting metallic objects in media to be input into a media transport system, comprising:

• an input tray configured to hold the media to be fed into the media transport system;
• one or more rollers configured to convey the media from the input tray and along a medium transport path, the one or more rollers driven by one or more motors;
• a plurality of induction sensors disposed across a width of the medium transport path, thereby establishing zones for detection of metallic material in the media, the zones capable of individual activation and deactivation, wherein the induction sensors have differing sensitivities for detecting a presence of metallic material and the induction sensors are configured to detect a presence of metallic material in the media and output a metallic detection signal;
• and
• a processing unit in communication with the induction sensors, the processing unit configured to receive the metallic detection signal and determine whether the media contains a metallic object, and the processing unit further configured to determine the location of the metallic object on the media, based on the metallic detection signal.

A system for detecting metallic objects in media to be input into a media transport system, comprising:

• an input tray configured to hold the media to be fed into the media transport system;
• one or more rollers configured to convey the media from the input tray and along a medium transport path, the one or more rollers driven by one or more motors;
• one or more induction sensors positioned proximate to the medium transport path, wherein the one or more induction sensors are configured to detect presence of metallic material and output a metallic detection signal;
• an ultrasonic detector configured to output an ultrasonic detection signal;
• and
• a processing unit configured to receive the metallic detection signal and the ultrasonic detection signal and determine whether the media contains a metallic object, the processing unit further configured to determine the location of the metallic object on the media based on the metallic detection signal and the ultrasonic detection signal.