Patent ID: 7787793
Filing Date: 2010-08-31
Classification: G03G

Abstract:
1. A method for sensing and adjusting cleaning blade load against a surface to be cleaned, comprising; providing a surface to be cleaned; providing at least one cleaning blade and positioned for cleaning said surface; providing a first blade positioning mechanism drivingly connected to one end of said cleaning blade for moving said cleaning blade; providing a first stepper motor drivingly connected to said first blade positioning mechanism for rotating said first blade positioning mechanism; providing a first torque transducer positioned between said stepper motor and said first blade positioning mechanism; actuating said first stepper motor and thereby move said cleaning blade to produce interference with said surface to be cleaned and generate blade load and torque with said torque being sent to said torque transducer; providing a desired average blade load signal; and providing a controller for receiving said desired average blade load signal and a signal from said torque transducer and in turn sending a signal to actuate said first stepper motor to thereby rotate said cleaning blade against said surface to be cleaned to increase cleaning blade interference against said surface to be cleaned until feedback from said torque transducer is equal to said desired average blade load.