Epson Expression 1680 User Manual Page 60
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- Table of contents
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2-40 Understanding EPSON TWAIN Pro Features
Click the eyedropper button beneath the slider, and the mouse
pointer changes to an eyedropper. Move the eyedropper over the
previewed image, and click a dark area. The eyedropper “picks
up” the color from that area, and uses it as the shadow for the
entire image. Click Cancel to restore the original image.
For further information on using the Shadow setting to optimize
scanning, see “Making the Shadow setting” on page 1-3.
Threshold
Available only when Pixel Depth is set to Black & White and
Halftone is set to None in the Image Type dialog box. The scanner
scans gray shades as either black or white using this setting, and
is useful for optical character reading (OCR).
You can select from 0 (lightest) to 255 (darkest) by moving the
slider.
Tone Correction
Clicking the Tone Correction button opens the Tone
Correction dialog box. The settings described in this section allow
you to adjust the tonal relationship between the original image
and its reproduction on a monitor or printer.
- Reference Guide 1
- Contents 3
- 4 Contents 4
- Chapter 4 Options 5
- 6 Contents 6
- Introduction 7
- Finding More Information 8
- Optimizing Scanning 9
- Making the Highlight setting 10
- Making the Shadow setting 11
- 1-4 Optimizing Scanning 12
- Making the Gamma setting 13
- Applying a preset tone curve 13
- 1-6 Optimizing Scanning 14
- Adjusting Color 15
- Making the Saturation setting 16
- Making tone curve settings 17
- Output values 18
- Optimizing Scanning 1-11 19
- If you still have problems 20
- Features 21
- Selecting a Document Source 23
- Selecting an Image Type 24
- Image Type button 26
- Pixel Depth 27
- Scanning Mode 27
- De-screening 27
- Auto Exposure Option 27
- B/W Options 28
- Selecting a Destination 29
- Destination list 30
- Destination button 31
- Destination Name 32
- Resolution 32
- Unsharp Mask 32
- Setting the Resolution 33
- Storage size indicator 34
- Lock button 35
- Using the Settings Dialog Box 36
- Making Configuration Settings 37
- Fast Preview 38
- Eyedropper Sampling Area 38
- Color menu 39
- Display Gamma 40
- Continuous Auto Exposure 40
- Source (Scanner) 41
- No Color Correction 42
- Densitometer menu 43
- Other menu 44
- Using the Scan Button 45
- Using the Preview Button 45
- Using the Preview Window 46
- Using the Densitometer 48
- Using the Preview Buttons 49
- Using Marquees 50
- Making and modifying marquees 51
- Resizing marquees 52
- Using the Marquee tools 53
- Delete button 53
- Duplicate button 54
- Auto Locate button 54
- Marquee number indicator 55
- All button 55
- Using the Adjust Buttons 56
- Auto Exposure 57
- Image Controls 58
- Exposure 59
- Highlight 59
- Tone Correction 60
- Tone Curve editor 61
- Output options 61
- Channels options 61
- Color Adjustment 62
- Gray Balance Intensity 63
- Saturation 63
- Setting Up the Start Button 65
- 2000 Settings 66
- Making PageManager Settings 68
- Chapter 4 70
- Using the Transparency Unit 70
- Removing the shipping screw 71
- Options 4-3 72
- 4-4 Options 73
- Options 4-5 74
- 35-mm film strips 75
- Options 4-7 76
- Mounted slides 77
- Options 4-9 78
- 120/220 film 79
- Options 4-11 80
- 4 x 5 inch film 81
- Options 4-13 82
- 4-14 Options 83
- Non-standard film sizes 84
- 4-16 Options 85
- Options 4-17 86
- 4-18 Options 87
- Options 4-19 88
- 4-20 Options 89
- Options 4-21 90
- Document Feeder 91
- Options 4-23 92
- Loading documents manually 93
- Options 4-25 94
- Document specifications 95
- Document conditions 96
- Other precautions 96
- 4-28 Options 97
- System requirements 98
- 4-30 Options 99
- Connecting the scanner 100
- 4-32 Options 101
- Chapter 5 102
- Maintenance 102
- Problems and Solutions 105
- Fatal error 106
- Option error 106
- Command error 106
- Interface error 106
- Scanner operation problems 107
- Quality problems 115
- Monitor colors 118
- Printed colors 119
- Software setup problems 120
- Sizing Up Your System 125
- Video cards 126
- Monitors 126
- File compression software 126
- Contacting Customer Support 127
- Technical Specifications 128
- A-2 Technical Specifications 129
- Electrical 130
- Environmental 130
- Standards and Approvals 131
- SCSI Interface 132
- USB Interface 133
- Option Interface Connector 134
- Initialization Methods 134
- Transparency Unit 135
- Automatic Document Feeder 136
- IEEE 1394 Scanner I/F Card 137
- Technical Specifications A-11 138
- Glossary 139
- 2 Glossary 140
- Glossary 3 141
- 4 Glossary 142
- Numerics 143
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