Patent ID: 8326162

Claim:
A method comprising: detecting a first lateral measure of an edge of a belt loop supported by rollers within an apparatus using a first sensor positioned at a first location within said apparatus to find an amount of misalignment of said edge of said belt loop relative to a known alignment position; detecting a second lateral measure of said edge of said belt loop within said apparatus relative to said known alignment position using a second sensor positioned at a second location within said apparatus that is different than said first location; determining a non-linear shape of said edge of said belt loop using a processor operatively connected to said first sensor and said second sensor based on said second lateral measure of said edge of said belt loop detected by said second sensor; correcting said amount of misalignment detected by said first sensor based on said non-linear shape of said edge of said belt loop to generate a corrected misalignment value using said processor; and adjusting a current lateral position of said belt loop within said apparatus relative to said known alignment position based on said corrected misalignment value using a belt tracking actuator operatively connected to said processor.