Chapter 55-15.1 Construction5.1.1 Specifications, Control Mechanisms, and Functions 0006-5712iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The major specifications, control mechanisms, and functions of the machine's original exposure system are as follows:T-5-15.1.2 Major Components 0006-5714iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The machine's original exposure system consists of the following major components:Item DescriptionOriginal exposure by LED array, indirect (LED + photoconducting body)Original scan in book mode: scan by moving contact image sensor (CIS)in ADF mode: by original stream reading with contact image sensor (CIS) fixed inpositionRead resolution 600 (main scanning) x 600 (sub scanning) dpiGradation 256Scanning speed (in ADFmode)45 ipm (single-sided, A4/LTR)Carriage positiondetectionby contact image sensor (CIS), HP sensor (PS503)Magnification 25% to 400%Main Scanning Direction by main controller PCB (image processing)Sub Scanning Directionin book mode: by changing carriage travel speed; by processingimages on reader controller PCB; by processingimages on main controller PCB*1in ADF mode: by changing original feed speed; by image processingon reader controller PCB; by image processing onmain controller PCB*1Lens rod lens arrayCCD number of lines: 1Number of pixels: Total 7488 (Number of effective pixels: 7180)maximum original read width: 304 mmCIS drive control by reader motor (M501)Original sizeidentification[1]Book Modein main scanningdirection:by reflection type sensor (AB/Inch)in sub scanning direction: by reflection type sensor (AB/Inch)[2]ADF Modewidth: by original width value in ADFlength: by photo sensor in ADFThe particulars of control differ depending on the selected magnification. For details, see "Changing theMagnification."
