OUR MISSION

• Create a variable pressure fuser that can produce low grade images.

• Be able to vary the current produced by the fuser

• Allow for fuser speed adjustment

How This Fulfills Our Goals• This is a variable pressure mechanism, which can be

easily adjusted• Pressure regulators in each air line will allow for even

force distribution in the final mechanism (as shown in AutoCad Drawing)

• Using original equipment maximizes quality of testing results. Minimizes variables inherent in a completely new system.

• Adjustable cylinders are smaller then stock pressure springs and can easily be used as a replacement in the same location.

• An adjustable valve allows for continuous pressure variance as opposed to the incremental means by which some mechanical devices must be varied.

• The use of Air pressure gauges makes for easy repeatability, along with an extremely accurate means of pressure measurement.

Description of the Mechanism

• As shown in the following slides our fuser mechanism uses air adjustable cylinders to produce pressure on the moveable, heat and charge producing roller.

• The mechanism is easily adaptable to most fusers due to its small size and the original spring set-up of most HP fusers.

Pressure varying cylinders

Torn heat and charge roller

Fixed pressure roller

Rigid metal casing

Air hose

Adjustable rod replaces original spring

Adjustable rod replacesoriginal spring behind cover

Electric current connector

Valve allows air to be evenly distributed to two cylinders

Adjustable rod replaces original spring(Better View)

Adjustable valve

PLANS FOR THE FUTURE• This mechanism can be placed directly into the

HP LaserJet 5000 with a couple modifications. Its possible we could use the printer to produce regular prints while varying the pressure from an external air source.

• Produce a variable speed motor driven mechanism with a simple drive gear to produce various speed prints using the aforementioned variable pressure fuser mechanism.

• Use the current connector located on the fuser mechanism to hook up a variable current power supply, allowing for the testing of different currents through the roller.

QUESTIONS AND SUGGESTIONS