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System to Enable Heavy Weight Sheet Fusing Without Increasing the Fuser Temperature

IP.com Disclosure Number: IPCOM000033705D
Publication Date: 2004-Dec-23
Document File: 1 page(s) / 9K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure describes a novel system utilizing the fuser and the duplex paper path loop to enable pre-heating of heavy weight sheets prior to laying the image so that higher fuser temperature is not needed. The proposed system has an aim to achieve a faster start-up of printing and improved performance when printing heavy weight inserted sheets.

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System to Enable Heavy Weight Sheet Fusing Without Increasing the Fuser Temperature

This disclosure describes a novel system utilizing the fuser and the duplex paper path loop to enable pre-heating of heavy weight sheets prior to laying the image so that higher fuser temperature is not needed. The proposed system has an aim to achieve a faster start-up of printing and improved performance when printing heavy weight inserted sheets.

1) Problem

In many fusing systems, it is necessary to have a higher fusing temperature for heavy weight sheets. This can be a problem when a quick start-up is needed, for example, in low line voltage conditions and when printing heavy weight inserts. The system takes time to achieve higher temperatures and also requires more power to do so.  This reduces the first-copy-out-time and productivity with inserts.  It also requires higher power supply capability.

2) How the proposed system works

When a heavy weight sheet is to be imaged, instead of increasing the fuser temperature, the system runs the sheet once through the paper path including the duplex path. Doing so, the sheet also goes through the fuser and hence becomes warm. The pre-heated sheet will not need as high fuser a temperature for the eventual image, so the fuser temperature may not need to be increased. For duplex sheets the sheets are simply run through the duplex path once again.

3) Discussion

The system would ease problems, particularly when printing covers and inserts. For contin...