Method and apparatus for avoiding fuser jams in an image production device

摘要

A method and apparatus for avoiding fuser jams in an image production device may include determining an entrance velocity of media entering a fuser nip during a print job, the fuser nip being the area of a fuser formed by a fuser roll meeting a pressure roll, determining an exit velocity of media exiting the fuser nip, determining a difference between the entrance velocity and the exit velocity, determining if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, wherein if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, retracting the pressure roll away from the fuser roll for a predetermined time period, determining if the predetermined time period has expired, wherein if the predetermined time period has expired, reposition the pressure roll to meet the fuser roll to reform the fuser nip, and resuming printing the print job.

主权项

1. A method for avoiding fuser jams in an image production device, comprising:
determining an entrance velocity of media entering a fuser nip during a print job by monitoring media velocity at the fuser nip entrance using a sensor disposed at the fuser nip entrance, the fuser nip being the area of a fuser formed by a fuser roll meeting a pressure roll; determining an exit velocity of media exiting the fuser nip; determining a difference between the entrance velocity and the exit velocity; determining if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, wherein when the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, retracting the pressure roll away from the fuser roll for a predetermined time period, wherein the predetermined threshold varies depending on a media type required for the print job; determining if the predetermined time period has expired, wherein when the predetermined time period has expired, reposition the pressure roll to meet the fuser roll to reform the fuser nip; and resuming printing the print job.