What's Cooking?
The Mad Doctor of Evergreen Technologies is at work dreaming up new creations. Although he does his best work during lightning storms, not a day goes by when he is not tinkering with the next new product. Below is a list of what our diabolical doctor is working on now:
8850/510 Fuser Drive Gear,
Xerox P.N. 807E23010
As anyone who services the 8850/510 will tell you, this gear fails on a regular basis. When these gears fail, typically several teeth break off causing noise or paper jamming in the fuser area. One cause of fuser gear failure is brought on when the bearings in the heat or pressure rollers fail and seize up. (We are working on this problem as well.) However, the root problem of the fuser gear failure is the actual choice of material that these gears are made of. Through extensive lab testing, we have learning that the material used (Nylon-66 to be exact) does not stand up to temperature cycling. So the constant heating and cooling of the heat roller eventually causes the plastic to become brittle and break. Armed with this knowledge, Evergreen Technologies is in the process of having these gears made from an engineered plastic designed to hold up under the high temperatures experienced in the 8850/510 fuser. By July 2009, we should have the prototype version of these gears for testing. If you have a few problem machines that you would like to serve as guinea pigs for testing, let us know.
6204 Developer Metering Blade, Xerox P.N. 33K94710
The metering blade is used to control the flow and thickness of dry imager on the magnetic roller surface. Through time and use, the foam edge of the metering blade becomes warn. This wear in turn typically causes excess friction, and the fusing of dry imager to the surface of the magnetic roller. The build-up of toner on the magnetic roller results in a service call for dark spots throughout the prints, or light areas along the length of the prints. While the wear to the metering blade is unavoidable, Evergreen Technologies is working on a newly redesigned part which is expected to last twice as long as the OEM version. If you are interested in testing the prototype version of this part, drop us an email.
8850/510 DRS Roller Kit, Xerox P.N. 600K58720
This rarely replaced kit contains two rollers that are attached to either side of the developer housing. The rollers establish the spacing between the developer magnetic roll and drum surface. Evergreen has been experimenting with increasing the diameter of these rollers to reduce the amount of friction between the drum surface and the magnetic brush. What we have found is that increasing the diameter of these rollers also decreases the amount of developer bead carryover! We will be producing a kit containing two rollers that will replace the existing rollers. Replacing the rollers will be a simple operation that can be done by the technician in the field. Stay tuned for more information on this exciting development in the war against developer bead carryover.
Cutter Drive Gears, Xerox
P.N. 020E18830 & 020E20680
This pair of gears is prone to failing in one of two ways. Either the D-shaft opening gets enlarged, which causes blurs across the print or jagged cuts. Or the gears crack in two, resulting in a cutter fault code. These gears are being redesigned to strengthen the structural integrity of the gear. They will also be made of a stronger material that will resist wear in the D-opening. These gears should be available by the fall of 2009. Let us know if you think we should bump up the completion date!
6204 Heat Fuser Roller, Xerox P.N. 59K33800
In normal service, the heat roller in the 6204 usually lasts a long time. However, eventually the roller surface coating will become scored, causing it to require replacement. As any service organization knows, the replacement fuser roller for the 6204 is an expensive item. We are experimenting with a far more cost effective alternative to replacing the roller. The recoated rollers from Evergreen will be processed with a much harder surface coating than their OEM alternative. If you would like to test one of the recoated rollers, drop us a note and ship us a used fuser roller.
