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HP 4400C HP Scanjet 4400C/5400C Series Scanner Mac - (English) User Manual - Page 93

Resolving image-quality issues, Resolving issues with scanned images

UPC - 725184800566

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Back to TOC 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. l "Resolving issues with scanned images." See this page. l "Resolving issues with printed copies" on page 96. l "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 93 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. l The scanner glass might be dirty. Clean the glass. See "Cleaning the scanner glass" on page 111. l 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.

Section	Page
Front panel and accessories comparisons	3
HP Scanjet 4400c	4
HP Scanjet 4470c	5
HP Scanjet 5400c	6
HP Scanjet 5470c	8
HP Scanjet 5490c	10
Getting started	15
Printing this information	15
Viewing the product tour	15
Where do I start?	16
Using the scanner buttons	16
Using the HP Precisionscan Pro software	16
Using another program	16
Using the HP Scanjet Copy Utility	16
Selecting and preparing items	17
Items for the scanner glass	17
Items for the ADF	17
Items for the XPA	18
Completing your first scan	19
Frequently asked questions	22
Scanning from scanner buttons	25
Overview of scanner buttons	26
Scanning quickly with scanner buttons	28
Scanning to the HP Precisionscan Pro software	28
Scanning to another program	29
Sending a scan to a website	30
Scanning for photo reprints	30
E-mailing a scan	31
Printing copies	33
Canceling a scan	34
Using Power Save	34
Configuring scanner buttons	35
Changing settings for buttons	35
Changing settings for Speed Destinations (some models only)	36
Settings for scanner buttons	37
Scanning from HP Precisionscan Pro	39
Overview of the HP Precisionscan Pro software	39
Starting the HP Precisionscan Pro software	40
Finding help for using the software	40
Performing a new scan	41
Cropping or selecting an area for final scan	42
Getting a closer look (zooming)	43
Selecting output type	43
Making optional adjustments, basic	45
Resizing (output dimensions)	45
Changing resolution	46
Changing contrast	46
Rotating an image	47
Mirroring (reversing) an image	47
Sharpening an image	48
Resetting all adjustments	48
Making optional adjustments, advanced	49
Inverting the image	49
Changing midtones	50
Changing highlights	51
Changing shadows	52
Checking for clipped areas	53
Setting pixel output levels	54
Viewing RGB values and pixels	55
About the histogram	55
Changing the hue	56
Changing the saturation	56
Changing the black and white threshold	57
Setting which colors become black or white in black & white bitmaps	58
Descreening images	59
Resetting all adjustments	59
Completing the final scan	60
Sending to a program	60
Returning the image to a program that supports TWAIN or the HP Scanjet Plug-in	61
Saving to a file	61
Printing	63
Placing a scan on a website	64
Preparing a scan for online viewing	64
Copying and pasting into another program	65
Dragging-and-dropping into another program	66
Dragging-and-dropping to the desktop or a folder	66
Scanning to CD	67
Other features and tips	68
Tips for best image quality	69
Saving settings	69
Setting preferences	70
Scanning from other programs	74
Making scanned text editable	75
Using accessories	77
Scanning from the ADF	78
Scanning from the XPA	79
Scanning slides	79
Scanning negatives	81
Making optional adjustments for slides or negatives	83
Adjusting midtones for slides or negatives	83
Adjusting highlights for slides or negatives	84
Adjusting shadows for slides or negatives	84
Viewing RGB values and pixel color	85
Troubleshooting and maintaining	87
Checking the basics	88
Starting troubleshooting	89
Resolving scanner messages	90
Resolving issues that did not generate messages	90
Resolving image-quality issues	93
Resolving issues with scanned images	93
Resolving issues with printed copies	96
Resolving issues with slides and negatives	98
Resolving issues with editable text	99
Resolving issues sending to destinations	101
Resolving issues with accessories	104
Resolving issues with the XPA	104
Resolving issues with the ADF	105
Setting scanner lamp controls	107
Energy Save	107
Faster Scan	107
Clearing jams from the ADF	108
Cleaning and maintaining	111
Cleaning the scanner glass	111
Cleaning the XPA	112
Cleaning the ADF glass	112
Uninstalling the software	113
Other resources, support, and specifications	113
Using software commands and controls	115
Using keyboard shortcuts and the menus	116
HP Precisionscan Pro tool and information bars	119
Toolbar	119
Info bar	120
Context-sensitive cursors	121
Glossary	123