Chapter 33-13.1 Basic Constraction3.1.1 Specifications / Control / Function List 0014-5961i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /T-3-13.1.2 Major Components 0014-6900i-SENSYS MF4150 / i-SENSYS MF4140 / i-SENSYS MF4120 /Followings are the major components for Document Exposure System.- The contact sensor to scan document- The Book motor (M2), the drive pulley, the drive belt, to shift the contact sensorIn image scanning control, the contact sensor is shifted by rotating the Book motor based on the drive signal from the DCNT board and scan the original on thecopyboard glass. When ADF is in use, image is scanned by feeding the originals by ADF instead of shifting the contact sensor.F-3-1item function / methoddocument exposure LEDdocument scan Book mode: scan by the shift of the contact Book mode: scan by the shift of the contact sensor (CS)ADF: document stream reading by fixed contact sensor (CS)scanning resolution 600 dpi (horizontal scanner) X 600 dpi (vertical scanner)number of gradations 256 gradationsmagnification 50% to 200%horizontal: image processing by SCNT boardvertical: change of carriage shift speed, image processing by SCNT boardlens rod lens arrayCMOS sensor number of lines: 1 linenumber of pixels: 5184 pixels as total pixels (5107 pixels as effective pixels)maximum document scanning width: 216 mmCS drive control drive control by Book motor (M2)document size detection nonedrive beltdrive pulleydrive pulley contact sensorBook motor (M2)