... .5) The material feeding is controlled by photocell, and it can automatically correct the error ... & CollocationElectric part1Stepping motor with driver2Micro-computer3Inverter 4Photocell Sensor 5Auto feeding6China Made Pneumatic Component7Switch: Chint ,China ... Machine function part1Unwind with auto EPC , Mark sensor tracking2Fabric storage3Feeding rolls4Feeding adjustment5Auto temp-control, Auto ...