COPYRIGHT © 2000 CANON INC. 2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000CHAPTER 2 ORIGINAL EXPOSURE SYSTEM2-12 RF02-404-01Point of original detectionCopyboard glassXenon lampOriginal sensorReader unitCopyboard coverPoint of original detection 1Point of original detection 2Point of original detection 3Point of original detection 4(external light)Original (A4R)(external light)4.4 Outline of Detection Operation4.4.1 Book Mode, 1 Original, Copyboard Cover Open[1] The scanner remains in wait.No. 1 mirror base: at HPXenon lamp: offOriginal sensor: disabled[2] The copyboard is opened.Detection starts of external light in mainscanning direction.No. 1 mirror base: to point of original de-tectionXenon lamp: offOriginal sensor: disabled[3] An original is placed.The width of the original is identified inrelation to the presence/absence of externallight; here, the absence of an original isidentified at points in question, eliminatingB5, B4, A4, and A3.[4] The Start key is pressed.In response, original detection is started.For main scanning direction, the xenonlamp is turned on to check for reflectedlight by the CCD (4 points).For sub scanning direction, the originalsensor starts detection.The absence of external light is identifiedas indicating the absence of an original.The machine will identify the size of anoriginal based on the combination of theresults (T02-404-01)Download Free Service Manual at http://printer1.blogspot.com
