Patent ID: 6584289
Filing Date: 2003-06-24
Classification: G03G

Abstract:
An apparatus for measuring the deflection of a belt in an electrophotographic printing machine from a zero-deflection position, said apparatus comprising:an elongate arm member having a first end and a second end, said second end configured for engaging and being displaced by said belt, a gearbox having a plurality of gears interconnected into a gear arrangement, a gearbox shaft rotatable by said gear arrangement, said arm member coupled to said gear arrangement, said gear arrangement transferring displacement of said second end of said arm member to rotation of said gearbox shaft; an encoder associated with said gearbox shaft, said encoder including at least one encoder output, said encoder sensing rotation of said gearbox shaft and issuing a plurality of electrical pulses on said at least one encoder output, said plurality of electrical pulses being indicative of a magnitude and a direction of rotation of said gearbox shaft, and a counter including at least one counter input, said at least one counter input electrically interconnected with a corresponding one of said at least one encoder output, said counter counting said electrical pulses.