Patent ID: 8061706
Filing Date: 2011-11-22
Classification: B65H

Abstract:
1. A method for adjusting the height of a media stack in an image production device, comprising: setting the height of the media stack using a default multiplier; determining if printing has started, wherein if it is determined that printing has started, measuring the thickness of media sheets in the media stack; counting the number of media sheets fed to an image production section of the image production device; determining if the media stack height is below a predetermined threshold using the one or more media stack height sensors, wherein the one or more media stack height sensors determine that the media stack height is below the predetermined threshold, calculating a next multiplier using the measured paper thickness and counted number of sheets fed; setting the next media stack height using the calculated next multiplier; determining if the print job has ended, wherein if it is determined that the print job has ended, ceasing measurement of the paper thickness and counting of the number of sheets fed; wherein the next multiplier (M) for the next media stack height adjustment is calculated according to the formula: where T=Target adjustment distance