Browse Prior Art Database

Duplex Module for Laser Printers

IP.com Disclosure Number: IPCOM000120944D
Original Publication Date: 1991-Jun-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 55K

Publishing Venue

IBM

Related People

Survant, TG: AUTHOR [+2]

Abstract

Disclosed is a method for providing modular duplex on small E. P. Printers.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Duplex Module for Laser Printers

      Disclosed is a method for providing modular duplex on small E.
P.  Printers.

      The figure describes a duplex module on current laser printer
products.  The first page is printed in normal fashion.

      Gate 1 is actuated by electro-mechanical means, deflecting the
exiting printed page 10 downward into the duplex module as shown in
the figure.  Drive rollers 6 and 7 driven by motor 5, place the paper
into a parked holding position in path 2.

      Gate 3 is actuated by electro-mechanical means creating a turn
into paper path 4, motor 5 is reversed and parked paper in path 2 is
moved into path 4.  Paper is fed into drive roll 8; the first printed
page is now down and unprinted side is up.  The second side is
normally printed. Duplexed page is exited from the machine at gate 1.

      Should jams occur, duplex paper path 9 is removable for
servicing.

      Disclosed anonymously.