Lexmark International, Inc.

Philip David Jones

Jeffrey Lawrence Tonges

Franklin Joseph Palumbo

David Anthony Schneider

Jason Lee Rowe

Darin Michael Gettelfinger

Cary Patterson Ravitz

Daniel Paul Cahill

Mark Andrew Omelchenko

Derek Masami Inouye

Michael James Shanor

Robert Alan Pemberton

Adam Daniel Cahill

Michelle Elizabeth Beck

An imaging device having a door-actuated feed roll separator mechanism. A pair of opposed panels of a frame of the imaging device are positioned parallel to a media path. A feed roll pair in the media path has a drive roll fixedly and rotatably mounted between the panels and a backup roll mounted to a pair of release assemblies that are slidably mounted to the panels. Biasing members bias the backup roll into contact with the drive roll forming a feed nip. A door pivotally mounted along a bottom end to the frame substantially covers the media path. A pair of tethers connect the pair of release assemblies to the door. With the door lowered, its weight applies a release force to the backup roll separating it from the drive roll to allow for easier removal of a media sheet jammed in the feed nip.

Door-actuated feed roll separator for an imaging device

A bump alignment assembly using at least two input media feeds for use in an imaging device. Two spaced apart media guides form a tunnel-shaped bubble chamber about a media path. Two media feed roll pairs are positioned adjacent to the entrance of the bubble chamber. The width of the entrance to the bubble chamber is equal to or greater than the separation of the feed nips of the two media feed roll pairs allowing two or more media paths to be accommodated without the use of media path extensions. A bump alignment roll pair is adjacent the exit of the bubble chamber. Entry, exit and biasing surface features of the media guides provide for buckling and bubble formation of media being fed into the bubble chamber.

Dual input bump alignment assembly for an imaging device

A method of controlling bubble formation in a media sheet between two sets of media feed roll pairs using a single media edge detector positioned downstream of the upstream media feed roll pair. The method may also be practiced using a bubble chamber positioned between the two sets of media feed roll pairs.

Method for controlling media bubble formation in an imaging device

A method and system for carrying out an image-to-paper printer registration setup includes: using a printer undergoing registration setup, printing a test pattern on a sheet having reference targets within a printable region of the sheet; using a scanner, scanning the printed sheet to generate an image bitmap of the test pattern-bearing sheet larger than the sheet itself so that the image bitmap contains the sheet edges and measuring in numbers of pixels the distances between the reference targets and/or sheet edges using multiple swaths of the image bitmap itself as the measuring tool; and, using a processor and based on the measured distances, calculating error-associated adjustment values in millimeters to use to correct errors in the registration setup of the image-to-paper in the printer and transferring the error-associated adjustment values to the printer to perform adjustment of its setup actuators.

Method, system and test sheet image bitmap for carrying out a scanner-and-processor based image-to-paper registration setup

The present application is directed to methods and devices for aligning media sheets in an input tray of an image forming device. The input tray includes a support surface and at least two spaced apart side walls. A first side wall includes a reference surface to align the media sheets. A second side wall includes a plurality of biasing members. The biasing members bias the media sheets toward the reference surface.

Media tray media biasing devices

Growing community of inventors

Lexington, KY, United States of America

Philip David Jones