System for cleaning rollers in an image forming device

Details System for cleaning rollers in an image forming device System for cleaning rollers in an image forming device

1998-01-29

1999-02-02

Burr, Edgar

Printing

Processes

101425, 399327, 399 99, B41C 3300

Patent

active

058651217

ABSTRACT:
A system for automatically cleaning toner build-up on a roller, such as the fuser pressure roller in an electrophotographic printing device, using the duplexing capability of the device. One embodiment is a method for cleaning a roller in an image forming device. The method includes the steps of: feeding a sheet of print media into the simplex paper path; printing a cleaning pattern on one side of the sheet; routing the sheet through the duplex paper path to invert the sheet; and routing the inverted sheet back through the simplex paper path. When the image forming device includes a fuser, such as with a laser printer, a toner image cleaning pattern is applied to the paper or other sheet media, the toner is fused to the paper, the paper is then routed through a duplexer and back through the fuser. When the cleaning page is fed into the image forming device the second time, it goes through the device with the printed side down. As it passes through the fuser, the toner that makes up the cleaning pattern becomes tacky. The tacky toner cleans the pressure roller as the roller comes in contact with the printed side of the page.

REFERENCES:
patent: 3706491 (1972-12-01), Furman et al.
patent: 5138390 (1992-08-01), Miyabayashi et al.
patent: 5142340 (1992-08-01), Farrell et al.
patent: 5227844 (1993-07-01), Bhattacharjee et al.
patent: 5423411 (1995-06-01), Kennett

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