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The purpose of this study was to investigate vibrations suppression control methods of image transfer belt system which is widely applied in image formation procedure of printers and copy machines. The study focused on vibrations caused by loading torque of printing mediums when they were delivered into the machinery. The system was modelled as a four-rollers-belt with a stepper motor based on exist apparatus. Equations of motion and vibration of the four-rollers-belt system were established. Two types of description about the vibrations in the image forming part of belt, stretching displacement and absolute displacement were defined and selected as main inhibited quantities. Impacts on the two quantities by several parameters of the system, including Young’s modulus of belt, rotational stiffness of motor coupling were studied. Additional flywheels and dynamic absorbers were used to improve the system performance, and an evaluation function was defined to estimate the effects. The results indicated that the two devices reduced the two displacements, and the outcomes varied as different attached locations and moment of inertia. It confirmed that by adding a flywheel with large inertia on burden roller, or a dynamic vibration absorber on drive roller could achieve better suppression results.

Vibrations Suppression Control of Image Transfer Belt System with Flywheel or Dynamic Vibration Absorber