HP Scanjet 7450c HP Scanjet 7400C Series Scanner Windows - (English) User Manu - Page 85

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Troubleshooting usage and maintaining

85

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●

The item might not be placed correctly on the scanner glass or in

the ADF. Make sure that the item you are trying to scan is placed

face down on the glass, or face up in the ADF.

●

If you are using the ADF, there might be a page on the scanner

glass. Raise the ADF unit and remove any pages on the scanner

glass.

●

If you are using the ADF, the ADF window might need to be

replaced. See

"Replacing the ADF Window" on page 102

.

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Scanners, monitors, printers, and different operating systems

interpret color differently. Use the hue and saturation settings in the

HP PrecisionScan Pro software to adjust the colors.

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The selection area might not be selected correctly. Make sure the

selection border is surrounding the area you want in the final scan.

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The item might have been placed crookedly or shifted when you

closed the lid. Straighten the original on the scanner glass and

scan again.

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You might have zoomed in or out, which does not change the size

of the image. Change the output size. See

"Resizing (output

dimensions)" on page 38

.

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The sharpening level needs to be increased. In the

HP PrecisionScan Pro software, adjust the sharpening. See

"Sharpening an image" on page 40

.

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●

You resized the image in a program other than the

HP PrecisionScan Pro software. Resize the image in the

HP PrecisionScan Pro software before you send it to the other

program. (See

"Resizing (output dimensions)" on page 38

.) Or, if

the original was a black-and-white drawing, use the Black &

White Scalable output type for the scanned image. (See

"Selecting output type" on page 36

.)

●

In the HP PrecisionScan Pro software, the resolution is set too

low. Set the resolution to a higher number, or return to the

default setting. See

"Changing resolution" on page 38

.

●

In the HP PrecisionScan Pro software, too much or too little

sharpening was applied. Adjust the sharpening. See


.

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●

You sharpened the image manually. Return to the default

setting. See


.

●

Best Quality Sharpening is selected. Check the setting. See

"Setting preferences" on page 60

.

Section	Page
Getting started	5
Printing this information	5
Viewing the product tour	5
Where do I start?	6
Using the scanner buttons	6
Using the HP PrecisionScan Pro software	6
Using another program	6
Using the HP ScanJet Copy Utility	6
Selecting and preparing items	7
Items for the scanner glass	7
Items for the ADF	7
Items for the XPA	8
Completing your first scan	9
Frequently asked questions	12
Scanning from scanner buttons	15
Overview of scanner buttons	16
Scanning quickly without making changes	17
E-mailing a scan	17
Faxing a scan	18
Printing copies	20
Saving a scan to a file	21
Making scanned text editable	22
Changing settings for buttons	24
List of options for scanner buttons	25
Scanning from HP PrecisionScan Pro	31
Overview of the HP PrecisionScan Pro software	31
Finding help for using the software	32
Performing a new scan	33
Cropping or selecting an area for final scan	34
Getting a closer look (zooming)	35
Selecting output type	36
Making optional adjustments, basic	37
Resizing (output dimensions)	38
Changing resolution	38
Changing contrast	39
Rotating an image	39
Mirroring (reversing) an image	40
Sharpening an image	40
Resetting all adjustments	41
Making optional adjustments, advanced	41
Inverting the image	42
Changing midtones	43
Changing highlights	44
Changing shadows	45
Checking for clipped areas	46
Setting pixel output levels	47
Viewing RGB values and pixels	48
About the histogram	48
Changing the hue	49
Changing the saturation	49
Changing the black-and-white threshold	50
Setting which colors become black or white in black & white bitmaps	51
Descreening images	52
Resetting all adjustments	52
Completing the final scan	53
Sending to a program	53
Returning the image to a TWAIN program	54
Saving to a file	54
Printing	56
Placing a scan on a website	56
Setting the scanned image as wallpaper	57
Copying and pasting into another program	57
Dragging-and-dropping into another program	57
Dragging-and-dropping to the Windows Desktop or a folder	58
Other features and tips	58
Tips for best image quality	59
Saving settings	59
Setting preferences	60
Scanning from other programs (TWAIN)	63
Using accessories	65
Scanning from the ADF	66
Scanning from the XPA	67
Scanning slides	67
Scanning negatives	69
Scanning transparencies	71
Making optional adjustments for transparent items	72
Adjusting midtones for transparent items	73
Adjusting highlights for transparent items	73
Adjusting shadows for transparent items	74
Viewing RGB values and pixel color	74
Sharing the scanner on a network	75
Working on the host computer	75
Starting sharing software on the host	76
Enabling sharing from the host	76
Working on a remote computer	77
Installing sharing software on the remote computer	77
Enabling sharing on the remote computer	78
Scanning from a remote computer	78
Troubleshooting usage and maintaining	79
Checking the basics	79
Starting troubleshooting	80
Resolving issues that did not generate messages	81
Resolving image-quality issues	83
Resolving issues with scanned images	84
Resolving issues with printed copies	86
Resolving issues with slides and negatives	88
Resolving issues with editable text	89
Resolving issues sending to destinations	91
Resolving issues with accessories	95
Resolving issues with the XPA	95
Resolving issues with the ADF	96
Clearing jams from the ADF	97
Cleaning and maintaining	99
Cleaning the scanner	99
Cleaning the XPA	100
Cleaning the ADF	100
Replacing the ADFWindow	102
Uninstalling the software	104
Other resources, support, and specifications	104
Using software commands and controls	105
Using keyboard shortcuts and the menus	106
HP PrecisionScan Pro tool and information bars	109
Toolbar	109
Adding tools to the toolbar	109
Info bar	110
Status bar	110
Context-sensitive cursors	111
Glossary	113
a	114
b	115
c	115
d	117
e	118
f	118
g	119
h	120
i	121
j	121
k	122
l	122
m	122
n	122
o	122
p	123
q	124
r	124
s	125
t	126
u	127
v	128
w	128
x	128
y	128
z	128

HP Scanjet 7450c HP Scanjet 7400C Series Scanner Windows - (English) User Manu - Page 85

Best Quality Sharpening is selected. Check the setting. See

Page 85 highlights