Patent ID: 8746682
Filing Date: 2014-06-10
Classification: B65H

Abstract:
1. A paper tray comprising: a frame comprising vertical rails, the frame selectively operatively mounting a printing device to its upper extent; a paper support slideably disposed in the frame, and slideably supported by the vertical rails; a drive screw rotatably secured to the frame and operatively coupled to the paper support; an actuator motor operatively driving the drive screw to raise and lower the paper support; a lower limit sensor that controls the actuator motor to limit downward movement of the paper support; an upper limit sensor that controls the actuator motor to limit upward movement of the paper support; a paper pick-up interface plate transfers a top paper from the paper support into a paper pick-up roller of the mounted printing device via a feed roller of the printing device; and a pull-track sensor that operates the actuator motor to maintain a top level of paper on the paper support between a minimum and maximum pull-track threshold.