HP 7400C Series Instrukcja Użytkownika Strona 79
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Back to TOC Troubleshooting usage and maintaining 79
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. See page 82.
● Resolving issues with slides and negatives. See page 84.
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 82.
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 29.
Scanned images have black dots or streaks in top and bottom
margins.
There might be ink, glue, white-out, or some other substance on
the scanner glass. Clean the scanner glass. See "Cleaning the
scanner" on page 95.
- 2 Back to TOC 2
- Copyright information 2
- Trademark credits 2
- Warranty 2
- Contents 3
- 4 Back to TOC 4
- Getting started 5
- Where do I start? 6
- Selecting and preparing items 7
- Items for the XPA 8
- Completing your first scan 9
- Color or B&W 10
- Number of copies button 10
- Copy button 10
- Selection 11
- Frequently asked questions 12
- Back to TOC 15 15
- Overview of scanner buttons 16
- E-mailing a scan 17
- Supported e-mail programs 18
- Faxing a scan 19
- Supported fax programs 20
- Printing copies 21
- Saving a scan to a file 22
- Making scanned text editable 23
- DIT TEXT button 24
- Changing settings for buttons 25
- Destinations options 26
- Image options 26
- ADF Page Size options 27
- Pro software 29
- Smart Friends 30
- Online Help 30
- Performing a new scan 31
- ● Press ESC 32
- Selecting output type 33
- Making optional adjustments 35
- Changing resolution 36
- Changing contrast 36
- Rotating an image 37
- Sharpening an image 38
- Resetting all adjustments 38
- Changing midtones 40
- Changing highlights 41
- Changing shadow 42
- Checking for clipped areas 43
- Setting pixel output levels 44
- Viewing RGB values and pixels 45
- About the histogram 45
- Changing the hue 46
- Changing the saturation 46
- ● Drag the slider 47
- Descreening images 49
- Completing the final scan 50
- To create editable text 51
- Saving to a file 52
- Printing 54
- Placing a scan on a website 55
- ● On the toolbar, click 56
- Other features and tips 59
- Saving settings 60
- Setting preferences 60
- Scanner tab options 61
- Selection Area tab options 62
- Resolution tab options 62
- Text tab options 62
- Controls tab options 63
- Scanning from other programs 64
- Using accessories 65
- Scanning from the ADF 66
- Scanning from the XPA 67
- Scanning negatives 69
- Scanning transparencies 71
- Checking the basics 75
- Starting troubleshooting 76
- CANNING SOFTWARE 78
- DIT TEXT. Choose EDIT TEXT 85
- DIT TEXT button on 86
- Resolving issues sending to 87
- Resolving issues with the XPA 90
- Resolving issues with the ADF 91
- Setting scanner lamp controls 92
- Clearing jams from the ADF 93
- Cleaning and maintaining 95
- Cleaning the ADF 96
- Cleaning the XPA 96
- ADF window 97
- Flat, gray bar 97
- Replacing the ADF Window 98
- To install the new ADF window 99
- Uninstalling the software 100
- Back to TOC 101 101
- 102 Back to TOC 102
- Back to TOC 103 103
- 104 Back to TOC 104
- Back to TOC 105 105
- Info bar 106
- Context-sensitive cursors 107
- 108 Back to TOC 108
- Glossary 109
- GlossaryGlossary 109
- Back to TOC 123 123
- 124 Back to TOC 124
- 132 Index Back to TOC 132
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