Chapter 55-9F-5-17To raise the accuracy of original size identification (as when the original is displaced while the ADF is closed), the machine makes use of the following 2 types ofmechanisms:1. Presence/Absence of an Original at 2 Points (for each point of measurement)For each point of measurement in main scanning direction, the machine checks the presence/absence of an original with reference to the CCD output at 2 pointsnear the point of measurement.F-5-18T-5-6Note:Changes in the Signal (from ADF open to close)change: noother: yesThe machine uses OR combinations for identification.2.Priority on the Front SensorsWhen checking the measurements for main scanning direction, if the absence of an original is indicated at the rear while the presence of an original is indicated atthe front, the machine will give priority to the indication at the front (i.e., presence of an original).Result of measurement Result of detection1A 1Bno no original absentyes no original presentno yes original presentyes yes original presentPoint of originaldetection 3Point of originaldetection 4Point of originaldetection 1Print of originaldetection 2B5B6A5A4B5RA4RB4A3CCD original detection positionPoint of originaldetection 2Point of originaldetection 1Point of originaldetection 3LTRRSTMTLTRLGL279.4×431.8mm(11"×17")CCD original detection positionOriginalsensor 3AB-Configuration Inch-configurationSTMTROriginalsensor 1Near 4 mmNear 13 mm 1A:additional pointof detectionOriginal sizeborder lineOriginal sizeborder line1B:conventional pointif detection
