Impeller-Assisted Cleaning Blade
Original Publication Date: 1988-Nov-01
Included in the Prior Art Database: 2005-Feb-15
Present cleaning blade systems work by scraping debris off the tape and then removing the debris by vacuum or simply relying on gravity or attrition to dispose of it. The problem with these systems is that they either require an expensive and bulky vacuum source or they do not work very well. The device consists of a pair of cleaner blades which contact the tape, a spinning impeller which comes very close to the tape and blades, a motor to drive the impeller, and the associated housing assembly. The close proximity of the blades to the tape creates high velocity air which can remove debris from the tape surface and from the cleaner blades. The impeller also functions to a very limited extent as a centrifugal blower which produces a net flow out of the port in the back of the housing.