Ricoh G410, G411 manual Gamma Correction

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6. Appendices

Gamma Correction

The following types of gamma correction are possible. However, different models of output devices have different characteristics. Select a suitable gamma curve for the original that is to be scanned and the output device.

❖Normal

Emphasizes the contrast slightly, resulting in a somewhat sharp scanned image.

❖Sharp

Emphasizes the contrast, resulting in a sharp scanned image.

❖Soft

Decreases the contrast, resulting in a soft scanned image.

❖Linear

Outputs the image as scanned.

❖User-defined

Downloads a user-defined gamma curve for gamma correction.

Normal

Sharp

54 Soft

Linear

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Contents Image Scanner Examples of Indications Safety InformationSafety During Operation Safety Information Iii Important Information Important InformationImportant Information How to Read This Manual How to Read This ManualLimitation ReferenceTable of Contents General Scanning Method Manual Scanning Setting OriginalsOriginals Specifications MaintenanceDIP Switches Functions OptionsPage Introduction FeaturesIntroduction Space-saving designGuide to the Scanner Rotary Switch Power ConnectorScsi Connector DIP SwitchesDescription Understanding the IndicatorsIntroduction Checking the Scanner Location Preparing for InstallationSetup location Installation environment Important Setting up the Scanner Installation spaceUsable range Recommended range What is SCSI? Connecting to the Host ComputerSetting up the Scanner Scsi Connection Require Ments for the ScannerConnecting to the Host Computer Setting the Scsi IDConnecting the Scsi Cable No Connection to Other Port Connecting the Scsi Cable Connection to Other Port Connecting the Power Cable Plug the other end of the power cable into the power outlet Turning Off the Scanner Power Turning On/Off the Scanner PowerTurning On the Scanner Power Initializing the Scanner Originals Recommended Sizes and Weights of OriginalsDifficult to Detect Sizes Contact glass Auto Document Feeder ADF Original Sizes and Scanning AreaOriginals Original sizes that can be detected automatically Setting the Original on the Contact Glass Setting OriginalsAlign the originals on the ADF Setting the Original in the Auto Document Feeder ADFSimplex scanning Duplex scanning Guides Setting Originals General Scanning Method Scanning OriginalsScanning Originals Manual ScanningItem to check Action When Scanning Does not StartDescription of error Action Error Indicators and SolutionsTroubleshooting When an Original is Jammed in the Auto Document Feeder ADF Procedures to Correct Errors in the ADFReplacing the Ink Ribbon Do not pull on the Endorser’s cord Cleaning the Endorser Cleaning the Scanner MaintenanceAppendices Cleaning the Feed Roller and DrumMaintenance Cleaning the White Roller Duplex Model Only Maintenance Moving the Scanner Carrying the Scanner a Short Distance Disposing of the ScannerRed Lamp Unit Type a OptionsImage Processing Unit Type a Endorser Unit Type a Printing Function Scanner Electrical and Hardware Specifications SpecificationsDIP Switches Preview FunctionsScanning Composition ScanBinary scanning Halftone scanningBinary Scanning/Threshold Standard modeDynamic threshold mode Halftone Scanning Gray Scale Scanning Area Extraction Section Area Multi-area Settings Auto Photo/Letter Resolution Contrast BrightnessGamma Correction Parameter Download Binary FiltersNoise removal SmoothingDocument Size Detection in the Auto Document Feeder ADF Document Size DetectionDocument Size Detection on the Contact Glass Erase Background When Erase Background is disabledWhen Erase Background is enabled Index DIP Switch 10, 27Red Lamp Unit Appendices