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HP Scanjet 7450c HP Scanjet 7400C Series Scanner Windows - (English) User Manu - Page 62

Controls, Preferences, Adjust Exposure, Adjust, Black & White Threshold

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62 Scanning from HP PrecisionScan Pro The Controls tab of the Preferences dialog box controls the control range readout to use for scanning. The control range sets the amount of tonal resolution per color available for correction in the Adjust Exposure command and Adjust Black & White Threshold command. Using a larger number of bits for the control range results in greater control of compensation for exposure or threshold correction. Choose one of these options: 8-bit readout (0-255) - sets the controls to use 8 bits of tonal resolution per color 10-bit readout (0-1023) - sets the controls to use 10 bits of tonal resolution per color 12-bit readout (0-4095) - sets the controls to use 12 bits of tonal resolution per color 16-bit readout (0-65535) - sets the controls to use 16 bits of tonal resolution per color Back to TOC

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