GISLER, SCOTT WILLIAM,MCNEILL, PHILIP C.,VERMA, KAUSHAL
申请号：
CA2961640
公开号：
CA2961640C
申请日:
2015.10.08
申请国别(地区):
CA
年份:
2018
代理人:
摘要：
A tensioning control device (18) having a first motor (314) that applies a torque to a first end of a substrate (330) in a first direction and a second motor (324) that applies a torque to a second end of the substrate (330) in a second direction that is generally opposite the first direction is disclosed. In this manner, the first motor and the second motor apply torque to the substrate in opposing directions, thereby placing the substrate in tension. In one embodiment, the first motor applies a torque to the first end of the substrate that is equal to the torque applied to the second end of the substrate by the second motor. By placing the substrate in tension in this manner, an actuator (334) is able to incrementally move the substrate in a forward direction and a backward direction independent of the tension applied to the substrate
