Epson ActionScanner Guia do Utilizador descarregar pdf (Página 99)

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Expression 636 Scanner Settings B-9

❏ Dither pattern A

Halftone is expressed in 4 by 4 bayer dither pattern.

❏ Dither pattern B

Halftone is expressed in 4 by 4 spiral pattern.

❏ Dither pattern C

Halftone is expressed in 4 by 4 net screen dither pattern.

❏ Dither pattern D

Halftone is expressed in 8 by 8 net screen dither pattern.

Note:

Changing the size of a halftone-processed image with your application

software may degrade the image. Instead use the scanner’s scale function

at the time of scanning to select your desired image size.

Dither pattern A Dither pattern B

Dither pattern C Dither pattern D

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 129 130

Contents 3
Chapter 6 Troubleshooting 4
Default Settings 4
Introduction 7
System Requirements 9
How to Use This Manual 10
Cautions, Tips, and Notes 11
Where to Get Help 11
Electronic Support Services 12
EPSON Fax-on-Demand Service 13
EPSON Forum on CompuServe 13
8 Introduction 14
Installing Your Software 15
Photograph by Claire Bergen 19
Calibrating Your System 21
Performing Screen Calibration 22
Enabling Screen Calibration 23
Scanning Using Calibration 27
Capturing Images From Within 29
Applications 29
Accessing EPSON TWAIN 30
Using the Easy Screen 32
Selecting the Document Source 33
Selecting the Image Type 33
Selecting the Destination 34
Using the Advanced Screen 35
Appendix A 36
Image Type advanced options 37
Modifying the Destination 40
Selecting resolution settings 41
Adjusting the preview area 45
Setting the image scale 47
Scanning the Image 48
Scanning Text 49
Using Special Effects 51
Using the Image Controls 53
4-4 Using Special Effects 54
Adjusting Colors 58
Changing Saturations 59
Inverting an Image 60
Using Automatic Features 61
4-12 Using Special Effects 62
Using EPSON Scan! II 63
Exporting an Image 64
Copying an Image 68
Resizing an Image 68
Exiting EPSON Scan! II 69
5-8 Using EPSON Scan! II 70
Troubleshooting 71
Problems With Image Quality 79
A-2 Default Settings 88
Default Settings A-3 89
A-4 Default Settings 90
Appendix B 91
Data Format 93
Color Mode 95
Halftoning Mode 96
Halftoning mode C None 98
Gamma Correction 100
Color Correction 101
Scanner Setting Guidelines 102
Image Type or Mode 103
Resolution 103
Printing or display methods 104
File size 105
Resolution guidelines 105
Optimum scanning resolutions 106
Size or Scale 107
Halftoning and Dropout 107
Brightness 107
Judging Image Quality 108
Equipment 109
File compression software 110
Icon Glossary 111
Image Controls Icons 113
Color Adjustment Icons 114
Term Glossary 115
10 Term Glossary 124
Index 1 125
2 Index 126
Index 3 127
4 Index 128
Index 5 129
6 Index 130

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