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Mobius web threading ramps for printing apparatus

IP.com Disclosure Number: IPCOM000229381D
Publication Date: 2013-Jul-25
Document File: 3 page(s) / 94K

Publishing Venue

The IP.com Prior Art Database

Abstract

Web fed printers have a continuous web of print media (paper) passing through the printer whereby an image is printed onto the web print media. In some cases, what is known as a mobius web is used allowing both sides (duplex) of the web to receive a printed image. In a mobius web arrangement, the web exits the print area and is turned over and around and fed back to the print area. The web is then fed back into the print area alongside a different section of the same web. In this manner, both sides (duplex) of the same web media can be printed by one print engine. This idea suggests an improvement to the web threading arrangements in this type of web feeding system. The proposal is the addition of web path ramps to facilitate web threading in the Mobius lower media path. The ramps enable the user to advance the web and guide it over every other roller in the lower path without the web leading edge getting caught on the roller. In this media path configuration, the web feeds over one roller and under the next roller. The web path ramps represent a new approach to solving the lead edge jams that occur while threading a web onto a horizontal media path, and also ensures that an operator efficiently and correctly threads the web.

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Mobius web threading ramps for printing apparatus

Web fed printers have a continuous web of print media (paper) passing through the printer whereby an image is printed onto the web print media.  In some cases, what is known as a mobius web is used allowing both sides (duplex) of the web to receive a printed image.  In a mobius web arrangement, the web exits the print area and is turned over and around and fed back to the print area.  The web is then fed back into the print area alongside a different section of the same web.  In this manner, both sides (duplex) of the same web media can be printed by one print engine.  This idea suggests an improvement to the web threading arrangements in this type of web feeding system.  The proposal is the addition of web path ramps to facilitate web threading in the Mobius lower media path. The ramps enable the user to advance the web and guide it over every other roller in the lower path without the web leading edge getting caught on the roller. In this media path configuration, the web feeds over one roller and under the next roller. The web path ramps represent a new approach to solving the lead edge jams that occur while threading a web onto a horizontal media path, and also ensures that an operator efficiently and correctly threads the web.  

Some web fed printers use mobius duplex configuration web threading, where the web path is at the bottom of the machine. Threading the web in this area puts the user on the floor moving across the machine.  The user’s face is close to the floor with visibility into the paper path and arm reach access for threading.  The strategy for threading the lower path is to thread the web over a roller and the under the next roller. Threading over the roller requires more interaction from the user.  The proposal is to add web path ramps for mobius lower path web threading. The ramps enable the user to advance the web and guide it over the rollers in the lower path. The web feeds over a roller and under the next roller. 

The ramps along with the use of feed advance controls enable threading the web in the lowest part of the machine to be simplified to two actions: 

1.    Feeding the web.

2.    Guiding the web along the bottom of the path.

The user should be able to stay at one end of the machine and feed the web through to the other end. The current strategy is to manually manipulate the web over and under the rollers for the entire length of the machine.  This...