H04N2201/04701 - CPC Classification

Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof; Scanning arrangements; Detection, control or error compensation of scanning velocity or position Detection of scanning velocity or position

• H04N2201/04703 » using the scanning elements as detectors, e.g. by performing a prescan 49
• H04N2201/0471 » using dedicated detectors 226
• H04N2201/04715 » by detecting marks or the like, e.g. slits 19
• H04N2201/04729 » in the main-scan direction 101
• H04N2201/04731 » in the sub-scan direction 94
• H04N2201/04732 » Detecting at infrequent intervals, e.g. once or twice per line for main-scan control 166
• H04N2201/04734 » Detecting at frequent intervals, e.g. once per line for sub-scan control 100
• H04N2201/04737 » by detecting the scanned medium directly, e.g. a leading edge 45
• H04N2201/04739 » by detecting the scanning head or scanning carriage 23
• H04N2201/04741 » by detecting the sheet support or the photoconductive surface directly 7
• H04N2201/04743 » by detecting the image directly 37
• H04N2201/04744 » by detecting the scanned beam or a reference beam 146
• H04N2201/04748 » by detecting synchronisation signals or driving signals, e.g. page sync 26
• H04N2201/04749 » Detecting position relative to a gradient, e.g. using triangular-shaped masks, marks or gratings 21
• H04N2201/04751 » Detecting position relative to a step, e.g. using L-shaped masks, marks or gratings 14

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