Chapter 55-7F-5-11The scanning speed of this machine is as follows:During copying (100%): 236 mm/secIn SEND mode (600 dpi x 600 dpi):236 mm/seca.Forward Movement When Scanning an ImageTo scan an image, the machine moves the contact image sensor (CIS) as follows by controlling the following motors:F-5-12b.Reverse Movement After Scanning an ImageAfter scanning an image, the machine moves the contact image sensor (CIS) to shading position at a specific speed (147 mm/sec).5.3.2 Contact Image Sensor (CIS)5.3.2.1 Outline 0006-5927iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The machine uses a contact image sensor (CIS) to expose and read an image, and the image is read on a line-by-line basis.T-5-4Item DescriptionLED serves as the source of light used to expose the original.Light guide directs the light from LEDs to the entire length of a single image line of theoriginal.Rod lens array collects light reflected by the original.CCD array collects the reflected light coming through the rod lens array.Reader controller PCB3.3V +24VOPT_MCKCCWMD_POWM_ENABLERETURNM_VREF+5VJ505 B*BAA*CPU Motordriver1234M501Start positionAccelerationOriginal leading edgeNormal speedOriginaltrailing edgeDecelerationStopShiftspeedShift distance[1] [2] [3] [4][1] used until the sensor reaches a speed suited to the selected mode.[2] used as a margin to ensure a stable speed.[3] used for reading the image at a specific speed.[4] used for prompt deceleration and suspension once the image end is reached.
