Chapter 88-361) After detection of the home position, the side registration sensor (PS25) shifts to the 13x19 paper detection position.F-8-43[1] Sensor plate[A] Center of the feeding assembly[B] Home position detection position (position 65 mm rear from the center of the feeding assembly)[C] 13x19 paper detection position (position 165 mm from the center of the feeding assembly)2) The machine uses the side registration sensor to detect paper.2-1) In case a paper is detected in step 1, the machine separates the side registration sensor from the paper [1]. After separating another 2 mm, the machine put theside registration sensor closer to the paper to recognize the position the paper was detected as the edge of the paper.F-8-442-2) In case no paper is detected in step 1, the machine separates the side registration sensor from the paper [1] by another 2 mm, then the machine put the sideregistration sensor closer to the paper to recognize the position the paper was detected as the edge of the paper.F-8-453) The machine calculates the length of displacement from the pulse number of the motor required for the side registration sensor to shift in step 2-1) or 2-2) andthen determine the image writing position (the length of sensor shift is 0.157 mm/pulse)[A] [B][1][C]2mm[1][1] A A+2mm