Compaq P/N DOC-FB4B manual Resolution, Scanat

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RGB Color: Scan color images and photographs in RGB Color mode when you want to capture and reproduce all the color data. To manage filesizesefficiently,takecarefulnoteoftheguidelinesforresolution (described later) when scanning in RGB. The combination of RGB Color and a high dpi can create an extremely large file size, as well as take several minutes to scan.

Gray Scale: What is referred to as black and white photographs are actually gray scale images. Different shades of gray are used to make up the whole picture. When you scan these types of images, you want to scan using the gray scale mode. Also use this mode to convert color photographs to black and white. Scanning a color photograph in gray scale will capture the continuous tones.

B/W: This mode captures black and white only. Use this mode when scanning single color (usually black) images, such as drawings or sketches, business logos, or text.

Resolution

Resolution is measured in dots per inch (dpi). The higher the resolution is set, the more detail in your image is captured. There are some guidelines you should follow when determining the resolution to

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On-line graphics: If you are scanning an image to be used on-line, such as the Internet, a BBS or in a multimedia presentation, you needn’t scan any higher than 100 dpi. This is because a monitor’s resolution is either 72 dpi (Mac), or 96 or 120 dpi (PC), and is not capable of displaying a higher resolution. Images scanned at 300 dpi and viewed on a monitor will appear three times as large as the actual image. This enlargement results because your monitor displays images in a 1:1 ratio of pixels (or dots), meaning one dot in the image equals one dot on- screen. At 300 dpi, the image contains 3 times as many dots when displayed on the monitor.

Printed images: If you plan to print the images you scan, set the scanning resolution no higher than equal to the resolution of your printer,typically300dpior600dpi.Thiswillavoidsizingdistortionsin your printed image.

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Contents Compact Color Flatbed Scanner ImageReader ExpressPhone 408 538-2500 Fax 408 InfoInfo Technician Copyright 1994 1997 All Rights Reserved Table of Contents Page Welcome Using this manualAssistance What is TWAIN? IntroductionPage System requirements Package contentsPage Using the pass-through Scanner Installation and Info TechnicianInstallation Connecting the scannerInfo Technician Installing the device driverPerform Utility Diagnostic Installing the application softwareTo Change Your Parallel Port Mode Setting in most systems Page Power Using your scannerScanning features and controls Hardware featuresPaper size Remove paper clips, pins or staples LetwetpaperdryfirstSoftware controls Paper loadingPreview Window SettingsImage Information Panel Scan ModePre-scan ScanScanat ResolutionInverse ScaleBrightness and Contrast Select the Twain source Scanning imagesTo scan an image Other scanning featuresClick Cancel to close the Flatbed Scanner window Scanning processPage General Scanning Tips TroubleshootingTwain Errors Printer Problems? Cannot print to printerBi-Directional Printers Image Transfer Failed Error messagesError 82 Scanner not Found message when attempting a scan Check your cable connection and retry scanningChanging Your Parallel Port Mode Scanner care Ifnecessary,cleanthescannerglasswithasoftlensclothFCC radio frequency interference statement Info Service Center 580DivisionStreet Campbell, CA Limited two year warranty
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