Chapter 55-8F-5-135.3.2.2 Analog Control Inside the Contact Image Sensor 0006-5928iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /The contact image sensor (CIS) is used to control analog image processing in the following flow of work:The light reflected by the original is collected by the rod lens array;the light is then collected by the CCD array;the light is converted into an electric signal by the CCD array (photo-conversion) for output.The CCD array consists of a total of 8 channels (units). Each channel possesses its own output correction table used to process an input intensity signal for gaincorrection for output of an image signal.F-5-14Be sure to correct the output among the channels using the following service mode items:-if you have replaced the contact image sensor (CIS) and, as a result, a discrepancy occurs in the output of image density among channels; orLight guideLight guideLEDCCD LEDRod lens arrayLight guideLED (R/G/B)CCD arrayRod lens arrayImage read lineCopyboard glassLED (R/G/B)scanning directionDriver circuit8CCD channel x 8936 pixelsOutputInputIdeal output characteristicsActual output characteristics76541
