Document Exposure/Feeder SystemDocument Exposure System■ OverviewSpecifications / Control / Function ListItem Function / MethodDocument Exposure LEDDocument Scan Book Mode:• Scan by the shift of the contact sensor (CIS)ADF:• Document stream reading by fixed contact sensor (CIS)Scanning Resolution Color:• 600 dpi (horizontal scanning) x 600 dpi (vertical scanning)• 300 dpi (horizontal scanning) x 600 dpi (vertical scanning)• 300 dpi (horizontal scanning) x 300 dpi (vertical scanning)Black and White:• 600 dpi (horizontal scanning) x 600 dpi (vertical scanning)• 300 dpi (horizontal scanning) x 600 dpi (vertical scanning)Number of Gradations 256 GradationsMagnification 25% to 400%Horizontal scanning direction: Image processing by the Main Controller PCBVertical scanning direction: The speed at which the carriage moves and image processing by the MainController PCBLens CIS/ColorCIS Number of lines: 1 lineNumber of pixels: 5184 pixels as total pixels (5107 pixels as effective pixels)Maximum document scanning width: 216mmCIS Drive Control Drive Control by Reader Motor (M720)Document Size Detection NoneDirt Sensor Detection None■ Major ComponentsFollowings are the major components for Document Exposure System.• The contact sensor to scan document.• The Reader motor (M720), The drive pulley, The drive belt, to shift The contact sensorIn image scanning control, the contact sensor is shifted by rotating the Reader motor based on the drive signal from the MainController PCB and scan the original on the copyboard glass. When ADF is in use, image is scanned by feeding the originals byADF instead of shifting the contact sensor.Drive BeltDrive PulleyDrive Pulley Contact Image Sensor (CIS)Reader Motor(M720)2. Technical Explanation22
