4IntroductionThank you for purchasing the Canon Document ScannerimageFORMULA DR-2020U. Please read this manual thoroughlybefore using the scanner to familiarize yourself with its capabilities,and to make the most of its many functions. After reading this manual,store it in a safe place for future reference.Symbols Used in This ManualThe following symbols are used in this manual to explain procedures,restrictions, handling precautions, and instructions that should beobserved for safety.WARNINGIndicates a warning concerning operations that may lead to death orinjury to persons if not performed correctly. To use the scanner safely,always pay attention to these warnings.CAUTIONIndicates a caution concerning operations that may lead to injury topersons, or damage to property if not performed correctly. To use thescanner safely, always pay attention to these cautions.IMPORTANTIndicates operational requirements and restrictions. Be sure to readthese items carefully to operate the scanner correctly, and avoiddamaging the scanner.HintIndicates a clarification of an operation, or contains additionalexplanations for a procedure. Reading these notes is highlyrecommended.Manuals for the ScannerDocumentation for this scanner consists of the following manuals.Please read these manuals thoroughly before using the scanner tofamiliarize yourself with its capabilities and make the most of its manyfunctions.• Reference Guide (this manual)This describes setup procedures and basic operations for thescanner.• User Manual (electronic manual)This provides complete and comprehensive information about thescanner.• CapturePerfect 3.0 Operation Guide (electronic manual)This is the operation guide for the Canon document scannerapplication, CapturePerfect 3.0.HintElectronic manuals are installed to the following locations as PDF(Portable Documents Format) files during installation of the suppliedsoftware.