Epson Gt20000 User Guide

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GT-20000 User’s Guide
Note:
❏To view the red, green, and blue levels at particular points in your preview image as you make 
adjustments, click the  densitometer icon in the Preview window and move your cursor over 
an image area. See Epson Scan Help for details.
❏Certain settings may not be available, or may be automatically selected, depending on the type 
of image you are previewing and other settings you have selected.
❏You can customize how certain Epson Scan settings behave by clicking Configuration and 
changing settings in the window that appears. See Epson Scan Help for details.
❏To undo any image quality adjustments you make to the preview image, click Reset if available, 
turn off the settings, or preview your image again.
Making Color Adjustments and Other Image Settings in Home Mode
The table below describes the settings available in Home Mode. For details on adjusting 
these settings, see Epson Scan Help.
Note:
If you are scanning multiple images at the same time and you want to apply the image adjustments 
to all of your image(s) or scan area(s), click All in the Preview window before you begin making 
your adjustments.
Threshold Adjusts the level at which the black areas in text and line 
art are delineated, improving text recognition in OCR 
programs. This setting is available only when the Image 
Type is set to Black&White.
Setting Description
Descreening Removes the rippled pattern that can appear in subtly-shaded 
image areas, such as in skin tones. Also improves results when 
scanning magazine or newspaper images which include screening 
in their original print processes. This setting is available only when 
the Image Type is set to Color or Grayscale. The results of 
Descreening do not appear in the preview, only in your scanned 
image.
Backlight 
CorrectionRemoves shadows from photos that have too much background 
light. 
						

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Note:
❏To view the red, green, and blue levels at particular points in your preview image as you make 
adjustments, click the  densitometer icon in the Preview window and move your cursor over 
an image area. See Epson Scan Help for details.
❏Certain settings may not be available, or may be automatically selected, depending on the type 
of image you are previewing and other settings you have selected.
❏You can customize how certain Epson Scan settings behave by clicking Configuration and 
changing settings in the window that appears. See Epson Scan Help for details.
❏To undo any image quality adjustments you make to the preview image, click Reset if available, 
turn off the settings, or preview your image again.
Color Restoration Restores the colors in faded photos automatically.
Dust  Removal Removes dust marks from your originals automatically. The results of 
Dust Removal do not appear in the preview, only in your scanned 
image.
Text 
EnhancementEnhances text recognition when scanning text documents.
Available only when you select Magazine, Newspaper, or Text/Line 
Art as the Document Type setting.
Brightness Adjusts the overall image lightness and darkness. 
Click Brightness to access the Brightness setting.
Contrast Adjusts the difference between the light and dark areas of the 
overall image.
Click Brightness to access the Contrast setting.
Threshold Adjusts the level at which the black areas in text and line art are 
delineated, improving text recognition in OCR programs. 
Available only when you select Black&White as the Image Type 
setting.
Click Brightness to access the Threshold setting. 
						

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Making Color Adjustments and Other Image Settings in Professional Mode
The table below describes the settings available in Professional Mode. For details on 
adjusting these settings, see Epson Scan Help.
Note:
❏If you are scanning multiple images at the same time and you want to apply the image 
adjustments to all of your image(s) or scan area(s), click All in the Preview window before you 
begin making your adjustments.
❏You may need to scroll down to view the Adjustments area of the Professional Mode window.
Setting Description
Unsharp Mask Turn on to make the edges of image areas clearer for an overall 
sharper image. The level of sharpness is adjustable. Turn off to leave 
softer edges.
Descreening Removes the rippled pattern that can appear in subtly shaded 
image areas, such as skin tones. Also improves results when 
scanning magazine or newspaper images that include screening 
in their original print processes. The method of Descreening is 
adjustable. The results of Descreening do not appear in the 
preview, only in your scanned image.
Color Restoration Restores the colors in faded photos automatically.
Backlight 
CorrectionRemoves shadows from photos that have too much background 
light. The level of Backlight Correction is adjustable.
Dust Removal Removes dust marks from your originals automatically. The level of 
Dust Removal is adjustable. The results of Dust Removal do not 
appear in the preview, only in your scanned image.
Auto Exposure Click the  Auto Exposure icon. To turn it on continuously, click 
Configuration, click the Color tab and select Continuous auto 
exposure. You can adjust the level of exposure adjustment using 
the slider. 
						

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Note:
❏To view red, green, and blue levels at particular points in your preview image as you make 
adjustments, click the  densitometer icon in the Preview window and move your cursor over 
an image area. See Epson Scan Help for details.
❏Certain settings may not be available, or may be automatically selected, depending on the type 
of image you are previewing and other settings you have selected.
❏You can customize how certain Epson Scan settings behave by clicking Configuration and 
changing settings in the window that appears. See Epson Scan Help for details.
❏To undo any image quality adjustments you make to the preview image, click Reset if available, 
turn off the setting, or preview your image again.
Histogram Provides a graphical interface for adjusting highlight, shadow, and 
gamma levels individually. For advanced users only.
Click the  Histogram Adjustment icon to access the Histogram 
setting.
Tone Correction Provides a graphical interface for adjusting tone levels individually. 
For advanced users only.
Click the  Tone Correction icon to access the Tone Correction 
setting.
Brightness Adjusts the overall image lightness and darkness. 
If you selected an Image Type setting other than Halftone, click the 
Image Adjustment icon to access the Brightness setting.
Contrast Adjusts the difference between the light and dark areas of the 
overall image.
If you selected an Image Type setting other than Halftone, click the 
Image Adjustment icon to access the Contrast setting.
Saturation Adjusts the density of colors in the overall image. 
Click the  Image Adjustment icon to access the Saturation 
setting.
Color Balance Adjusts the balance of red, green, and blue colors in the overall 
image.
Click the  Image Adjustment icon to access the Color Balance 
settings.
Color  Palette Provides a graphical interface for adjusting mid-tone levels, such as 
skin tones, without affecting the highlight and shadow areas of the 
image. For advanced users only.
Click the  Color Palette icon to use the Color Palette settings. 
See “Using the Color Palette Feature (for Professional Mode Only)” 
on page 52 for instructions.
Threshold Adjusts the level at which the black areas in text and line art are 
delineated, improving text recognition in OCR programs. 
(Available only when you select Black & White as the Image Type 
setting.) 
						

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Selecting the Scan Size
You can scan your images at their original size, or you can reduce or enlarge their size as 
you scan them. You do this using the Target Size setting.
If you are going to scan your image to a specific size, you should select the Target Size 
setting after previewing it, but before adjusting your scan area indicated by creating a 
marquee. This sets the scan area to correct proportions so your image will not be cropped 
unexpectedly.
To select the scan size, see one of these sections.
Home Mode: “Selecting the Scan Size in Home Mode” on page 45
Professional Mode: “Selecting the Scan Size in Professional Mode” on page 47
Selecting the Scan Size in Home Mode 
						

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1. You can select a predefined scan size from the Target Size list. Click the arrow to open 
the list and select the size you want. A marquee (dotted line) proportioned for that size 
appears on your preview image.
2. If you need to create a scan size that is not in the Target Size list, you can create a 
custom size. Click the arrow to open the list and select Customize. You see the Target 
Size window.
3. Type a name for your custom size, enter the size, click Save, then click OK. Your new 
size appears in the Target Size list. 
						

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4. Once you have selected your scan size, you can click and drag the marquee to the area 
in the image you want to scan. For details, see “Creating a Marquee on a Preview 
Image” on page 37. The marquee proportions are retained as you adjust it.
If you need to rotate the marquee for a landscape or portrait image without changing its 
aspect ratio, click the  orientation icon. 
Note:
The   orientation icon is not available if you selected Original as the Target Size setting.
Selecting the Scan Size in Professional Mode
1. You can select a predefined scan size from the Target Size list. Click the arrow to open 
the list and select the size you want. A marquee (dotted line) proportioned for that size 
appears on your preview image. 
						

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2. If you need to create a scan size that is not in the Target Size list, you can create a 
custom size. Click the arrow to open the list and select Customize. You see the Target 
Size window.
3. Type a name for your custom size, enter the size, click Save, then click OK. Your new 
size appears in the Target Size list.
4. You can fine-tune the size using additional tools. Click the + (Windows) or r(Mac OS 
X) button next to Target Size to display these tools. 
❏To size your image by a certain percentage, adjust the Scale value.
❏To change the way your image is cropped, turn Trimming on or off. See Epson 
Scan Help for details.
❏To unlock the proportions of your scan size, click the  lock icon. Then adjust the 
marquee or enter new width/height measurements.
5. Once you have selected your scan size, you can click and drag the marquee to the area 
in the image you want to scan. For details, see “Creating a Marquee on a Preview 
Image” on page 37. The marquee proportions are retained as you adjust it. 
						

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If you want to rotate the marquee for a landscape or portrait image without changing its 
aspect ratio, click the  orientation icon.
Note:
The  orientation icon is not available if you selected Original as the Target Size setting.
Finishing the Scan
What happens after you scan depends on how you started your scan.
❏If you started your scan by running Epson Scan from the EPSON Scan icon or by 
pressing the a Start button on the scanner, you see the File Save Settings window. 
This lets you select the name and location of your saved scan files. See “Selecting File 
Save Settings” on page 29 for details. After you select these settings, Epson Scan 
starts scanning.
❏If you started your scan from a TWAIN-compliant program such as Adobe Photoshop 
Elements, your scanned image(s) opens in the program window. If Epson Scan does 
not automatically close after scanning, click Close to exit the Epson Scan window and 
view your image(s) in the program. 
						

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Chapter 5 
Scanning Special Projects
Restoring Color
Using the Color Restoration feature in Epson Scan, you can transform old, faded, or 
badly exposed photos into ones with true-to-life color and sharpness. You can restore 
printed photos automatically as you scan them.
See one of these sections for instructions on restoring colors.
Home Mode: “Color Restoration in Home Mode” on page 50
Professional Mode: “Color Restoration in Professional Mode” on page 51
Note:
This feature is not available in Office Mode. Change the scan mode to Home Mode or Professional 
Mode. See “Changing the Scan Mode” on page 22 for instructions.
Color Restoration in Home Mode
1. Place your original(s) on the document table. See “Placing Documents or Photos” on 
page 16 for instructions.
2. Start Epson Scan. See “Starting Epson Scan” on page 20 for instructions.
3. In the Home Mode window, select the Document Type, Image Type, and Destination 
settings. For details, see “Scanning in Home Mode” on page 25.
Original image Color Restoration applied