22 2-52-5Technical Overview > Document Exposure / Delivery SystemTechnical Overview > Document Exposure / Delivery SystemDocument Exposure / Delivery System■ Specifications / Control / Function Listitem function / methodDocument Exposure LEDDocument Scan Book mode: scan by the shift of the contact Book mode: scan by the shiftof the contact image sensor (CIS)ADF: document stream reading by fixed contact image sensor (CIS)Scanning Resolution 600 dpi (horizontal scanner) X 600 dpi (vertical scanner)Number Of Gradations 256 gradationsMagnification 50% to 200%horizontal: image processing by Main Controller PCBvertical: change of carriage shift speed, image processing by MainController PCBLens rod lens arrayCMOS Sensor number of lines: 1 linenumber of pixels: 5184 pixels as total pixels (5107 pixels as effectivepixels)maximum document scanning width: 216 mmCS Drive Control drive control by Reader Motor (M701)CS HP Detection YesDocument Size Detection NoneDirt Sensor Detection YesT-2-3■ Major ComponentsFollowings are the major components for Document Exposure System.• The Contact Sensor to scan document• The Reader Motor (M701), the Drive Pulley, the Drive Belt, to shift the Contact SensorIn image scanning control, the Contact Image Sensor is shifted by rotating the Reader Motorbased on the drive signal from the Engine Controller PCB and scan the original on theCopyboard Glass. When ADF is in use, image is scanned by feeding the originals by ADFinstead of shifting the Contact Image Sensor.Drive beltDrive pulleyDrive pulley Contact sensorReader motor (M701)F-2-2