LOW NOISE PULLEY FOR TIMING BELT
Original Publication Date: 1992-Apr-30
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
Excessive noise from copiedprinters in working environments has been an irritant to users from the advent of such machines until the present day. One of the major contributors to machine noise has been found to be timing belts where engagement between the teeth of the belts and the pulleys emit noise. As the air pockets between the teeth of the belts and the pulleys are displaced periodically along the lateral direction of motion, the disturbance modulates air in the surrounding areas and generates noise. The noise level is proportional to a number of things, for example, the volume of the air pockets being displaced and the rate at which they are displaced.