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HP 5400C, 4400C manual Resolving image-quality issues, Resolving issues with scanned images

Models: 5400C 4400C

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Resolving image-quality issues

This section contains information for resolving image-quality issues, whether you scanned using the scanner glass, the ADF, or the XPA.

●“Resolving issues with scanned images.” See this page.

●"Resolving issues with printed copies" on page 96.

●"Resolving issues with slides and negatives" on page 98.

Resolving issues with scanned images

This section contains solutions to issues that affect all scanned images, regardless of whether you used the scanner glass or the ADF. If you were printing, see also "Resolving issues with printed copies" on page 96.

Scanned images are too light or too dark.

The original image might be very light or dark or be printed on colored paper. Adjust the midtone, highlight, and shadow settings from the HP Precisionscan Pro software. See "Scanning from HP Precisionscan Pro" on page 39.

Troubleshooting and maintaining

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Scanned images have black dots or streaks in top and bottom margins.

There might be ink, glue, correction fluid, or some other substance on the scanner glass. Clean the scanner glass. See "Cleaning the scanner glass" on page 111.

Scanned images have unwanted lines through them.

●The scanner glass might be dirty. Clean the glass. See "Cleaning the scanner glass" on page 111.

●If you are using the ADF, the ADF glass might be dirty or scratched. Clean the ADF glass. See "Cleaning the ADF glass" on page 112.

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HP 5400C Resolving image-quality issues, Resolving issues with scanned images, Scanned images are too light or too dark

Contents

Hp scanjet 4400c series 5400c series scanners User’s manual Copyright information WarrantyTrademark credits Back to TOCFront panel and accessories comparisons HP Scanjet 4400c series HP Scanjet 4470c series HP Scanjet 5400c series XPA HP Scanjet 5470c series Back to TOC HP Scanjet 5490c series Back to TOC Back to TOC Contents Using software commands and controls Printing this information Viewing the product tourGetting started Using the scanner buttons Where do I start?Using the HP Precisionscan Pro software Using another programSelecting and preparing items Items for the scanner glassItems for the ADF Items for the XPA To load the item in the scanner Completing your first scanTo complete your first scan using the scanner buttons Selection border How can I reduce the time it takes to scan? Frequently asked questionsWhat is the difference between screen and print quality? Should I change the resolution?What is the difference between zooming and resizing? How can I reduce the file size?Getting started Back to TOC Scanning from scanner buttons Scanning from scanner buttons Back to TOC Overview of scanner buttonsNumber of copies some models only Back to TOC Scanning from scanner buttonsScanning quickly with scanner buttons Scanning to the HP Precisionscan Pro softwareTo scan to the HP Precisionscan Pro software To scan directly to another program Scanning to another programScanning for photo reprints Sending a scan to a websiteTo place a scan on a website To create a photo reprintMailing a scan Supported e-mail programsUnsupported e-mail programs Naming e-mail attachments To e-mail a scan from the scannerTo print copies from the scanner Printing copiesUsing Power Save Canceling a scanConfiguring scanner buttons Changing settings for buttonsTo change settings for buttons To change settings for Speed Destinations Changing settings for Speed Destinations some models onlyDestinations options Settings for scanner buttonsADF Page Size options Image optionsOverview of the HP Precisionscan Pro software Scanning from HP Precisionscan ProStarting the HP Precisionscan Pro software Finding help for using the softwareScanning from HP Precisionscan Pro Smart FriendsTo start a new scan Performing a new scanTo crop or select an area for final scan Cropping or selecting an area for final scanTo change the selection area To move the selection borderSelecting output type Getting a closer look zoomingTo zoom To zoom outList of output types To reset output typeMaking optional adjustments, basic Resizing output dimensionsTo resize an image To open the Resolution tool Changing resolutionTo change resolution To reset resolutionMirroring reversing an image Rotating an imageTo rotate an image To mirror reverse an imageSharpening an image Resetting all adjustmentsMaking optional adjustments, advanced Inverting the imageTo invert the image Changing midtones To return to the default settingsTo lighten the image overall To darken the image overallTo increase detail in lighter areas Changing highlightsTo decrease detail in lighter areas To choose a value as the highlight valueTo increase detail in darker areas Changing shadowsTo decrease detail in darker areas To select a value as the shadow valueChecking for clipped areas To view and change clipped light highlight areasTo view and change clipped dark shadow areas To change output levels Setting pixel output levelsViewing RGB values and pixels About the histogramTo view the RGB values and pixels Changing the saturation Changing the hueTo change the hue To increase saturationTo reset the black and white threshold Changing the black and white thresholdTo change the black and white threshold To reset to the default colors To descreen images Descreening imagesCompleting the final scan Sending to a programTo send to a program To return the image to a program Saving to a fileTo save to a file To save a scan for future processing in an OCR programImage file formats List of file typesTo print PrintingPlacing a scan on a website Preparing a scan for online viewingOptimizing a scan for online viewing Copying and pasting into another program To scan an item for a websiteTo copy and paste into another program Dragging-and-dropping to the desktop or a folder Dragging-and-dropping into another programTo drag-and-drop into another program To drag-and-drop to the desktop or a folderTo scan to CD Scanning to CDOther features and tips To save settings Saving settingsTo use settings Tips for best image qualityTo set scanning preferences Setting preferencesScanner tab options Preview scan when the Scan To button is pushedSelection Area tab options Resolution tab optionsControls tab options Text tab optionsTo scan from other programs Scanning from other programsTo create editable text Making scanned text editableWhat to expect from OCR programs Scanning from HP Precisionscan Pro Back to TOCUsing accessories Using accessories Scanning from the ADFTo scan from the ADF Scanning from the XPA Scanning slidesTo scan slides HP logo here To scan negatives Scanning negativesUsing accessories Adjusting midtones for slides or negatives Making optional adjustments for slides or negativesTo lighten slides or negatives overall To darken slides or negatives overallAdjusting shadows for slides or negatives Adjusting highlights for slides or negativesTo view RGB values and pixel color Viewing RGB values and pixel colorUsing accessories Back to TOC Troubleshooting and maintaining Checking the basics Troubleshooting and maintaining Back to TOCTroubleshooting and maintaining Starting troubleshootingScanner or software is not working Quality of resulting scans is not what I expectedResolving scanner messages Resolving issues that did not generate messagesScanner is not working Scanner does not scan right awayScanner is scanning items very slowly Scanner does not save multiple pages as a single file Scanner is making a loud clicking or grinding noiseResolving issues with scanned images Resolving image-quality issuesScanned images are too light or too dark Scanned images have unwanted lines through themScanned image is not clear Image is completely black or completely whiteScanned images are crooked Image is too big or too small Scanned images are grainy, jagged, or fuzzyParts of the page around the edges are not printing Resolving issues with printed copiesCopies are too light Vertical white stripes appear onScanned images are jagged or fuzzy Colors in printed images are incorrectColors are incorrect, or the image is too light or too dark Resolving issues with slides and negativesScanned image shows a colored tint, usually pink There are streaks in the scanned imageResolving issues with editable text Scanned text is not editableScanned text is editable in some programs but not in others Troubleshooting and maintaining Troubleshooting and maintaining 101 Resolving issues sending to destinationsTroubleshooting and maintaining Troubleshooting and maintaining 103 Resolving issues with the XPA Resolving issues with accessoriesWhen using the XPA, I cannot scan using the scanner buttons XPA is not working at allResolving issues with the ADF Troubleshooting and maintaining 105An item loaded in the ADF keeps jamming Bottom of the scanned image is cut off Troubleshooting and maintaining 107 Setting scanner lamp controlsEnergy Save Faster ScanTo clear jams at the start of a Clearing jams from the ADFTroubleshooting and maintaining 109 To clear jams at the end of a Cleaning the scanner glass Cleaning and maintainingTroubleshooting and maintaining 111 To clean the scanner glassCleaning the XPA Cleaning the ADF glassTo clean the ADF glass Other resources, support, and specifications Uninstalling the softwareTo uninstall the software Troubleshooting and maintaining 113114 Back to TOC 115 Using software commands and controlsUsing software commands and controls Back to TOC Using keyboard shortcuts and the menusBack to TOC Using software commands and controls 117 Light areas highlights, and detail Using software commands and controls 119 HP Precisionscan Pro tool and information barsToolbar Info bar Context-sensitive cursors Using software commands and controls 121122 123 SymbolsGlossary Brightness ConfigureClick Clipped pixelsDisplay resolution Default settingsControl range CropDrag DpiDrag-and-drop Drop-down list or menuFramed text Flowed textFocus Front panelHistogram HighlightsHP Scanjet Copy Utility HP Precisionscan Pro softwareInterface connection Interpolated resolutionInterpolation InvertMidtones Optical resolutionMillions of colors MoiréOutput type Output dimensionsPalette Palette flashingPrinter resolution Power SaveResolution Positioning plateSettings Screen resolutionRich text format Rotate toolSharpen ShadowSlide holder Slide light shieldTone Tiff compressedToolbar Transparency adapterWidth Back to TOC Glossary 137XPA light source Zoom scanGlossary Back to TOC 139 IndexBack to TOC 140 See also settingsSee also images Back to TOC 141OCR Back to TOC 142Back to TOC 143 See also resettingBack to TOC 144 USB Back to TOC 145Back to TOC 146