Ricoh IS430 user manual ¡ Brightness, ¡ Contrast

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Image Scanner User's Manual

￿¡ Brightness

Function: To adjust the brightness value between 1 and 255.

A high brightness setting results in a lighter overall image. A low brightness setting results in a darker overall image.

Usage: When scanning a dark image, the darker area may appear as deep black although it has gray shades. In this case, increase the setting and shades of gray appear. Conversely, if a lighter image becomes pure white, decrease the setting.

Lower

Higher

￿¡ Contrast

 

Function: To adjust the contrast value between 1 and 255.

At a high contrast setting, the scanner emphasizes black and white, leaving few middle gray shades. At a low contrast setting, the scanner emphasizes the middle gray shades, at the expense of black and white.

Usage: If you want a sharp image, set a higher value. If you want a soft image, set a lower value.

Lower

Higher

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03_IS430-BODY

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97.5.8, 5:37 PM

PageMaker 5.0J

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Contents IS430 G406-8610 Remarque concernant les utilisateurs au Canada Important informationPage Precautions Area Rating Plug Cable Connector Contents Functions Options97.5.8, 535 PM Part names ¡ Front view¡ Rear view Part namesInstallation Parts list¡ Checking the parts Name Qty¡ Location Operating environment¡ Connecting the Scsi cable ¡ Setting the Scsi ID ¡ Connecting the power cord¡ Turning the power on ¡ Initializing the scannerIndicators Scanner Document feeder Meaning Green AmberPlacing originals ¡ Placing an original on the contact glass Original condition¡ Placing originals on the document table Nals, otherwise the inner mylar might Be damaged Cleaning Soft clothCleaning ¡ Lamp cover open TroubleshootingCorrective action ¡ Lamp error ¡ Document feeder cover open¡ Paper jam If you cant see the document, see steps 4 to¡ Document table error ¡ Paper misfeedProblem Cause Corrective action Refer ¡ System error¡ Others Specifications Appendix Functions¡ Prescan ¡ Scan¡ Scanning composition Manual threshold ¡ Binary scanning / ThresholdDynamic threshold ¡ Halftone scanning ¡ Multi-value scanning ¡ Area extraction ¡ Section area Multi area settings Case of scanning without this function¡ Auto photo/letter ¡ Resolution ¡ Brightness ¡ Contrast¡ Gamma correction ¡ Binary filter ¡ Semi-automatic document feed Sadf mode Book mode Document feeder mode¡ Parameter download ¡ Document size detectionOptions ¡ Red lamp unit¡ Data compression unit ¡ Video interface unit¡ Image processing unit Auto photo/letter