Epson Gt20000 User Guide

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GT-20000 User’s Guide
Note:
The following characters cannot be used in the prefix.
Windows: \, /, :, _, *, ?, , , |
Mac OS X: :
4. Click the arrow to open the Type list, and select a file format as described in the 
following table. Depending on the format, the Options button may be available for 
making detailed settings.
5. The check boxes at the bottom of the window give you these options.
❏Overwrite any files with the same name
Select this option if you want to reuse the selected file name and location and 
overwrite previous files with the same names.
Format (File 
Extension)Description
BITMAP (*.bmp) 
(Windows only)A standard image file format for Windows. Most Windows programs, 
including word processing programs, can read and prepare 
images in this format.
JPEG (*.jpg) A compressed file format in which the compression level can be 
selected. The JPEG format lets you highly compress image data. 
However, the higher the compression, the lower the image quality. 
Any lost image quality data cannot be restored, and the quality 
deteriorates each time the data is saved. The TIFF format is 
recommended when modification and retouching are required.
Multi-TIFF (*.tif) A TIFF format where multiple pages are saved to the same file. You 
can also edit the scanned images before saving them. See Epson 
Scan Help for details. To open Multi-TIFF files, you need a program 
that supports it.
PDF (*.pdf) A document format that can be read on both Windows and 
Macintosh systems (platform independent). To use PDF documents 
in Windows, you need Adobe Reader or Acrobat. Multi-page 
documents can be saved as one PDF file. When you save color or 
grayscale images in PDF, you can select a compression level.
PICT (*.pct) 
(Macintosh only)A standard image file format for Macintosh. Most Macintosh 
programs, including word processing programs, can read and 
prepare images in this format.
PRINT Image 
Matching II JPEG 
(*.jpg) or TIFF 
(*.tif)A file format that includes PRINT Image Matching II data for 
enhanced quality and a wider color range. Print Image Matching II 
compatible printers can then print this data for brilliant, true-to-life 
results. (PRINT Image Matching data does not affect the way the 
image displays on the screen.) Available in JPEG or TIFF format.
TIFF (*.tif) A file format created for exchanging data between many 
programs, such as graphic and DTP software. When scanning black 
& white images, you can specify the compression type. 
						

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❏Show this dialog box before next scan
Select this option if you want the File Save Settings window to appear automatically 
before you scan. If you deselect it, you must click the  File Save Settings icon to 
open the window before clicking the Scan button.
❏Open image folder after scanning
Select this option if you want Windows Explorer or the Macintosh Finder to 
automatically open the folder where your scanned image file is saved when Epson 
Scan finishes scanning.
❏Show Add Page dialog after scanning
Select this option if you want to scan multiple images into a single PDF or multi-Tiff 
file. A window showing the Add page, Edit page, and Save File buttons will open 
automatically after each scan.
6. Click OK.
Detailed Setting Instructions
Selecting the Scan Resolution
You can select a specific Resolution setting for your images. Keep in mind that higher 
resolution settings increase scanning time, so do not select a higher resolution than you 
need. See the following table to reference the appropriate resolution setting to use so that 
you do not have to take more time than necessary. 
To select the resolution setting, see one of these sections.
What you will do with the 
scanned imageSuggested scan resolution
Send via e-mail, upload to 
web, or view only on the 
screen96 to 150 dpi
Print 300 dpi
Print, or convert to editable 
text (OCR) (for documents 
only)300 dpi
Fax 200 dpi
Enlarge after scanning at 
100%Increase Resolution setting by same amount you will 
increase image size after scanning.
For example, if the resolution is 300 dpi, but you will increase 
the image size to 200%, change the resolution setting to 
600 dpi. 
						

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Home Mode: “Selecting the Resolution in Home Mode” on page 33
Office Mode or Professional Mode: “Selecting the Resolution in Office Mode or 
Professional Mode” on page 33
Selecting the Resolution in Home Mode
To change the resolution, first select Other as the Destination setting.
Click the arrow next to the Resolution list and select the number of dpi (dots per inch) at 
which you want to scan. 
Selecting the Resolution in Office Mode or Professional Mode
You can select the resolution you want at any time.
Office Mode
Professional Mode 
						

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Click the arrow next to the Resolution list and select the number of dpi (dots per inch) at 
which you want to scan.
Previewing and Adjusting the Scan Area
Once you have selected your basic settings and resolution, you can preview your image 
and select or adjust the image area of the image(s) in a separate Preview window on your 
screen. There are two types of preview.
❏Normal preview displays your previewed image(s) in their entirety. You must select the 
scan area and make any image quality adjustments manually.
❏Thumbnail preview displays your previewed image(s) as thumbnail(s). Epson Scan 
automatically locates the edges of your scan area, applies automatic exposure settings 
to the image(s), and rotates the image(s) if necessary.
Note:
If you are using Office Mode or if the optional ADF is installed, the thumbnail preview is not 
available. You must use normal preview.
1. Click Preview. If you want to change the preview type, click the Thumbnail check box 
under the Preview button, if it is available.
Note:
Depending on your document type and other settings, you may not be able to change the 
preview type.
Epson Scan prescans your image(s) and displays them in one of the following Preview 
windows. 
						

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Normal preview 
						

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Thumbnail preview
2. If you are viewing the normal preview, you can do the following to adjust the image(s).
❏To select your scan area, create a marquee that marks the edges of your image 
area. You can move the marquee to change the scan area. See “Creating a 
Marquee on a Preview Image” on page 37 for instructions.
❏To zoom in on an image, click inside the scan area and click the Zoom button. 
Epson Scan prescans again and displays a larger preview on the Zoom tab. (Your 
other images are still previewed at the original size on the Preview tab.)
❏To adjust the image quality, click the scan area(s) you want to modify and make the 
adjustments. See “Adjusting the Color and Other Image Settings” on page 39 for 
instructions. 
						

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If you are viewing the thumbnail preview, you can do the following to adjust the 
image(s).
❏To zoom in on an image, double-click its thumbnail, or click the thumbnail and then 
click the Full Size tab near the top of Preview window. (This feature is only available 
when you are scanning multiple images at the same time.)
❏To rotate an image or flip it horizontally (like a mirror image), click its thumbnail and 
then click the  rotation icon or  mirroring icon.
Note:
If your image is not rotated correctly, see “Images are Rotated Incorrectly” on page 127.
❏To adjust the scan area to crop your image differently, you can create and move a 
marquee that marks the edges of your scan. See “Creating a Marquee on a Preview 
Image” on page 37 for instructions.
❏To adjust the image quality, click the scan area(s) you want to modify and make the 
adjustments. See “Adjusting the Color and Other Image Settings” on page 39 for 
instructions. If you want to apply the adjustments you have made to all of your 
images, click All.
Creating a Marquee on a Preview Image
A marquee is a moving dotted line that appears on the edges of your preview image to 
indicate the scan area.
You can move the marquee and adjust its size. If you are viewing the normal preview, you 
can create multiple marquees (up to 50) on each image to scan different image areas in 
separate scan files. 
						

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1. To draw a marquee, move your cursor over a preview image. The pointer becomes a 
set of cross-hairs.
Note:
If you are viewing the normal preview and you only have one document or photo on the 
document table, you can click the   auto locate icon to automatically draw a marquee, then 
skip to step 3.
2. Position the pointer in the area where you want to place the corner of your marquee and 
click. Hold down the mouse button and drag the cross-hairs over the image to the 
opposite corner of the desired scan area. Then release the mouse button. You see the 
moving dotted line of the marquee.
3. Do one of the following to adjust the marquee.
❏To move the marquee, position your cursor inside the marquee. The pointer 
becomes a hand. Click and drag the marquee to desired location. 
						

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❏To resize the marquee, position your cursor over the edge or corner of the marquee. 
The pointer becomes a straight or angled double-arrow. Click and drag the edge or 
corner to the desired size.
Note:
❏To restrict the movement of the marquee to vertical or horizontal only, hold down the Shift 
key as you move the marquee. To restrict the size of the marquee to the current proportions, 
hold down the Shift key as you resize the marquee.
❏For best results and image exposure, make sure all sides of the marquee are located inside 
the preview image. Do not include any of the area around the preview image in the 
marquee.
4. If you are viewing the normal preview, you can create multiple marquees (up to 50). 
Just draw them as described in steps 1 through 3, or click the  copy marquee icon 
to create additional marquees of the same size. You can move and resize all the 
marquees as described in step 3. To delete a marquee, click inside it and click the 
delete marquee icon.
Note:
If you draw multiple marquees, make sure you click All in the Preview window before you scan. 
Otherwise, only the area inside the last marquee you drew will be scanned.
Adjusting the Color and Other Image Settings
Once you have previewed your image(s) and adjusted the scan area, you can modify the 
image quality, if necessary. Epson Scan offers a variety of settings for improving color, 
sharpness, contrast, and other aspects affecting image quality. Before you make 
adjustments, be sure to click the image or marquee for the area you want to adjust.
To adjust the color and other image settings, see one of these sections.
Office Mode: “Making Color Adjustments and Other Image Settings in Office Mode” on 
page 40 
						

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Home Mode: “Making Color Adjustments and Other Image Settings in Home Mode” on 
page 41
Professional Mode: “Making Color Adjustments and Other Image Settings in Professional 
Mode” on page 43
Making Color Adjustments and Other Image Settings in Office Mode
The table below describes the settings available in Office 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.
Setting Description
Brightness Adjusts the overall image lightness and darkness. This 
setting is available only when the Image Type is set to Color 
or Grayscale.
Contrast Adjusts the difference between the light and dark areas of 
the overall image. This setting is available only when the 
Image Type is set to Color or Grayscale.
Unsharp Mask Turn on to make the edges of image areas clearer for an 
overall sharper image. Turn off to leave softer edges. This 
setting is available only when the Image Type is set to Color 
or Grayscale.
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.
Text Enhancement Enhances text recognition when scanning text documents.