Patent ID: 7463004
Filing Date: 2008-12-09
Classification: G03G

Abstract:
1. An electrostatic marking system comprising processing stations operatively arranged with each other, said processing stations comprising: a charging station, an exposure station, a development station, a transfer station, a fusing station and a paper transport station, each of said stations comprising a source of power, including at least two stepper motors operatively connected to at least one planetary gearset, and wherein one element of said gearset is driven by a first of said stepper motors and another element of said gearset is driven by a second of said stepper motors, and wherein said planetary gearset comprises a sun gear, a carrier with at least one planet gear, and a ring gear, said sun gear in direct contact with said at least one planet gear, said source of power enabled to provide a continuous variable gear ratio between said stepper motors and the driven loads, and wherein said source of power is adapted to provide different gear ratio ranges, depending upon which of said gears in said gearset is connected to said first and said second stepper motor, said ring gear comprising internal ring gear teeth around its entire inner circumference, said at least one planet gear having external planet teeth located around their entire external circumference.