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Active Media Path Roller Diverter

IP.com Disclosure Number: IPCOM000132438D
Publication Date: 2005-Dec-15
Document File: 2 page(s) / 32K

Publishing Venue

The IP.com Prior Art Database

Abstract

Active diverters typically use a drive mechanism to position a moving paper guide to one of 2 positions (or more). Roller pairs spaced along a paper path move media from the paper tray through the print engine and into the output tray. Each roller pair consists of a drive roller and a follower. This invention simplifies diverter design by mounting the follower on a pivoting arm such that the follower can move and be positioned in an arc relative to the drive roller.

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Active Media Path Roller Diverter

Paper path diverters are either passive or active.  Passive diverters rely on geometry and may or may not have a moving part (e.g. a flap) to insure proper operation.  Active diverters typically use a drive mechanism to position a moving paper guide to one of 2 positions (or more).  The added complexity and cost of an active diverter is offset by the intended increase in reliability when geometry alone is not sufficient to insure proper operation.  The change in trajectory of media passing through traditional diverters imparts a stress on the media and on the image that can result in stubbing and image smearing.  These negative attributes are typically managed by limiting the magnitude of the angular change in the paper path imparted by the diverter. 

Consider an architecture that requires a paper path diverter able to guide media through a large angle change in paper path trajectory without altering the image side down orientation, stubbing or degrading image or media.  Further consider an additional architectural constraint requiring the printer duplex path media to be unaffected as it passes through the “diverter”.    The paper path requirements in this system are so aggressive that typical media trajectory and diverter components put too much stress into the media to assure reliable operation.

Roller pairs spaced along a paper path move media from the paper tray through the print engine and into the output tray.  Each roller pair consists of a drive roller and a follower.  This invention mounts the follower on a pivoting arm such that the follower can move and be positioned in an arc relative to the drive roller.  In one embodiment of the invention,...