Xerox Documate 3115 Scanner Docking Station User Guide

							Xerox® DocuMate® 3115
User’s Guide171
Skip Blank Originals
Select this option to have the scanner detect if a blank page has been fed through the scanner, and 
remove it from the final file. Typically you might use this option when scanning a stack of two-sided 
pages which have a number of blank sides.
•
Blank threshold—you can use the Threshold slider to fine tune the sensitivity of the blank image 
detection. The results will depend on the scan settings and the types of documents being scanned.  
In general leave the threshold level at the default setting if you are scanning good-quality 
documents printed on standard 20lb printer paper.  Try lowering the sensitivity level if your 
documents contain light colored text or drawings so those pages are not detected as blank.  Raise 
the sensitivity level if you are scanning double-sided light-weight paper where images from the 
opposite side of the page may appear in the image of the blank side. 
Clean Up Edges
Select this option to remove any thin lines from around the edges of the final scan.  This option will fill 
the margins of the image with the detected edge color.  When you select this option, the 
Width input 
field will automatically enable for you to input the size of the area you want to have filled with the 
background color.  You can specify a fill size between approximately 0.04 to 0.39 inches (1 mm to 10 
mm).
Automatic Image Cropping
Depending on the scanner model and installed software, there may be more than one auto cropping 
option in the interface.
•
Crop to original—select this option to let the scanner automatically determine the size of the item 
being scanned. This option is only available if the scanner supports this feature. This option may 
occasionally be grayed out as not all scanning applications support this feature.
Always properly adjust the paper guides to the width of the paper in the input tray so that the 
pages feed into the scanner as straight as possible. Skewed pages may not crop properly. 
•
Crop to length—this option tells the scanner to crop the final image to the bottom of the page 
being scanned. This option is only available if the scanner supports this feature. This option may 
occasionally be grayed out as not all scanning applications support this feature.
Always properly adjust the paper guides to the width of the paper in the input tray so that the 
pages feed into the scanner as straight as possible. Skewed pages may not crop properly. 
Skew detection
This option detects when a page has been fed through at an angle. Select an option from the drop 
menu to turn on this feature. When scanning, always make sure the paper guides have been properly 
adjusted to the width of the documents in the input tray. This helps to prevent the pages from being 
pulled through at an angle. 
						

							Xerox® DocuMate® 3115
User’s Guide 172
Image Enhancements
Click on the Image Enhancements icon to select options applicable to what type of image processing 
you want applied for the items being scanned.
•
Main panel—this panel contains the most commonly used scan settings. Some of the options in 
this panel may have adjustment options on the other panels in this section. When the 
Basic source 
configuration mode is selected, this is the only panel available. Change to the 
Advanced source 
configuration mode to enable the other panels which are also described in this section.
•
Color processing panel—this panel contains advanced options for processing colors in the final 
scans.
•
Advanced panel—this panel contains advanced image enhancement options for improving the 
clarity of the scanned image. 
The Image enhancements section when the Basic document source configuration mode is selected.
The Image enhancements section when the Advanced document source configuration mode is selected. 
						

							Xerox® DocuMate® 3115
User’s Guide173
Disabled Options in this Section
Some options in the interface may be grayed out and cannot be selected. Grayed out options are either 
not appropriate for the current scanner, the software needed to enable the feature is not installed, 
or 
the feature is dependent on another setting in the scanner's interface. Hover the mouse cursor over a 
grayed out feature to see information about why the feature is unavailable.
When you are using a scanner that has multiple sources, such as an ADF with Flatbed combination 
scanner, some options may be disabled based on the current source displayed in the source list. For 
example when the flatbed source is selected, the manual feed option will be disabled.  
If an option is unavailable, check to see which source is displayed at the top of the source list when in 
the Advanced interface view.
Note that even when 
Sources identical is selected, any options that are only available for a specific 
source will be discarded if the scanner scans from the source that does not have those options.
When Flatbed is displayed here, only the 
options that can be used for the flatbed will 
be available in the scanner interface.Click on one of the color modes under the 
source you want to configure.  That source will 
now be displayed at the top of the list, and 
the options for that source will be available in 
the scanner interface. 
						

							Xerox® DocuMate® 3115
User’s Guide 174
Main Panel Options
Some of the options in this panel may have advanced adjustment options on a different panel in this 
section. When the 
Advanced configuration mode is selected, an icon will appear next to those features 
which have adjustment options on another tab. Click on one of the icons to go to the area of the 
interface where the adjustment options are located.
Click on a link below to go to the appropriate page in this section for instructions on adjusting the 
option that is displayed on the Main tab.
See Advanced Panel Options on page 182
•Despeckle
Brightness
Brightness is the overall lightness of the image. Move the slider left or right to darken or lighten the 
image. Adjusting the brightness level adjusts the tone of the pixels, without changing the true color of 
the pixels; such as when adjusting hue. 
Choosing brightness values
Adjusting the brightness level is based on how you want the image to appear and there is no standard 
to adhere to. Below are some recommended options for brightness image correction based on the 
original document quality.
• Original documents of good quality - 50%
• Pencil written letters, forms, or drawings - 25% to 40%
• Faded pictures or old documents with faded text - 35% to 45%
• Light colored carbon copy paper, such as yellow or pale pink or pale green, with light text - 45% to 
55%
• Newspaper or magazine pages - 55% to 70%
• Book pages - 55% to 80%
• Pictures taken inside or in the shade - 60% to 85% 
						

							Xerox® DocuMate® 3115
User’s Guide175 Brightness
 works in conjunction with Contrast for image enhancement. When you are adjusting the 
brightness level to improve the scanned image quality, try adjusting the contrast level as well. The 
contrast level is the range between the lightest and darkest parts of the image. For example, if you 
scanned a document with notes written in pencil, you may have to decrease the brightness level to get 
the handwritten notes to appear in the scanned image. However, when decreasing the brightness, 
white starts to appear gray in the image. In that case, raise the contrast level to make the differences 
between the lightest and darkest part of the image more defined.
Color image brightness examples
The examples below show the original image at the default setting of 50% brightness level, 25% 
brightness and 75% brightness. Adjusting the brightness level does not make the image completely 
black nor completely white.
Technical note:
Most monitors have a brightness setting that is user adjustable. When viewing scanned images on-
screen, versus printing the image, the brightness setting of the monitor may affect how light or dark 
the scanned image looks when compared to the original. If the scanned image is too different from the 
original image, or if adjusting the scanned brightness level does not modify the image how you want, 
try adjusting the monitor's brightness level. Refer to the monitor's user guide for adjusting the 
brightness level and see if the manufacturer has any recommended settings.
Black background scanners:
Some scanners have a black background plate. A black background results in more precise cropping 
results and skew detection. However, when scanning thin paper, such as multipart color forms or ruled 
writing paper, which are less than 18lb paper weight, the background may “bleed” through into the 
final image and make the image darker than it should be. In that case, try adjusting the brightness 
level between 60% and 80%.
Contrast
Contrast refers to the differences between the light and dark portions in the image. Move the slider left 
or right to decrease or increase the contrast levels. Increasing the contrast level emphasizes the 
difference between the lighter and darker portions of the image, decreasing the contrast de-
emphasizes that difference.
Brightness: 25% Brightness: 50% Brightness: 75% 
						

							Xerox® DocuMate® 3115
User’s Guide 176 Choosing contrast values
While Brightness adds the same amount of gray or white to all pixels in the image, Contrast adjusts the 
pixels based on the pixel color level. For instance, increasing the contrast level will add white to light 
colored pixels and gray to dark pixels to make the difference between color levels in the image crisper. 
Decreasing the contrast level will have the opposite affect, where light colored pixels are modified with 
gray and dark pixels are modified with white to make the transition of colors in the image appear 
smoother.
Adjusting the contrast level is based on how you want the image to appear and there is no standard to 
adhere to. Contrast works in conjunction with brightness for image enhancement, when decreasing the 
brightness level, the overall image becomes darker, in which case you may want to increase the 
contrast level so that the differences between the lighter and darker portions of the image are clearer.
Below are some recommended options for contrast image correction based on the original document 
quality.
• Original documents of good quality - 50%
• Pencil written letters, forms, or drawings - 55% to 65%
• Faded pictures or old documents with faded text - 60% to 70%
• Light colored carbon copy paper, such as yellow or pale pink or pale green, with light text - 45% to 
55%
• Newspaper or magazine pages - 55% to 70%
• Book pages - 60% to 75%
• Pictures taken inside or in the shade - 40% to 60%
Color image contrast examples
The examples below show the original image at the default setting of 50% contrast level, 25% 
contrast and 75% contrast.
Technical note:
Most monitors have a contrast setting that is user adjustable. When viewing scanned images on-
screen, versus printing the image, the contrast setting of the monitor may affect how clear a scanned 
image looks when compared to the original. If the scanned image is too different from the original 
image, or if adjusting the scanned contrast level does not modify the image how you want, try 
adjusting the monitor's contrast level. Refer to the monitor's user guide for adjusting the contrast level 
and see if the manufacturer has any recommended settings.
Contrast: 25% Contrast: 50% Contrast: 75% 
						

							Xerox® DocuMate® 3115
User’s Guide177 Black background scanners:
Some scanners have a black background plate. A black background results in more precise cropping 
results and skew detection. However, when scanning thin paper, such as carbon copy paper or ruled 
writing paper, which are less than 18lb paper weight, the background may “bleed” through into the 
final image and make the image darker than it should be. In that case, try adjusting the brightness 
level between 40% and 60%, then adjust the contrast level between 60% and 80%. 
Gamma
Gamma is the tone curve and starting point for image enhancement. Move the slider left or right to 
darken or lighten the image. As you raise or lower the 
Gamma value, the values at which Brightness and 
Contrast affect the image are changed. It is recommended that you keep the default gamma value, or 
adjust this setting before adjusting the other options. 
Choosing gamma values
As the gamma value is adjusted lower, the tone curve begins to straighten and the shadows of the 
image are expanded, darkening the shadows without overall darkening the image with gray as seen 
with lowering the brightness level. This way, the highlights and shadows in the image are maintained 
by saturating the pixels with darker levels of the same color rather than adding gray to all colors.
As the gamma value is adjusted higher, the tone curve bends and the highlights of the image are 
expanded, lightening the highlights without overall lightening the image with white as seen with 
raising the brightness level. This way, the highlights and shadows in the image are maintained by 
saturating the pixels with lighter levels of the same color rather than just adding white.
Adjusting the gamma level is based on how you want the image to appear and there is no standard to 
adhere to.
Color image gamma examples
The examples below show the original image at the default setting of 1.8 gamma level, then 1.0 
gamma and 2.6 gamma. Adjusting the gamma level does not make the image completely black nor 
completely white.
Gamma: 1.0 Gamma: 1.8 Gamma: 2.6 
						

							Xerox® DocuMate® 3115
User’s Guide 178 Technical note:
Most monitors have a gamma setting that is user adjustable. When viewing scanned images on-screen, 
versus printing the image, the gamma setting of the monitor may affect how light or dark the scanned 
image looks when compared to the original. If the scanned image is too different from the original 
image, or if adjusting the scanned gamma level does not modify the image how you want, try 
adjusting the monitor's gamma level. Refer to the monitor's user guide for adjusting the gamma level 
and see if the manufacturer has any recommended settings.
Invert Image
The Invert image option reverses the color of each pixel in the scanned image. 
When scanning in black and white, each pixel is reversed from black to white and white to black. When 
scanning in grayscale each pixel is reversed to the opposite level of gray. When scanning in color each 
pixel is reversed to the opposite color in the color wheel.
For example, you might choose this option if you are scanning pages that have been printed from 
newspaper microfilm. Newspaper microfilm reverses black and white so that when viewed on a 
monitor, the text is white and the paper is black.
The following example shows the original grayscale image and the inverted image.
The following example shows the original color image and the inverted image.  
						

							Xerox® DocuMate® 3115
User’s Guide179
Mirror Image
The Mirror image option flips the image left-to-right.
Bit Depth Reduction
The Bit depth reduction options are only available when scanning in black and white. Click the drop 
down menu and select an option from the list.
Threshold and Dynamic threshold
Threshold
 enables you to set what level of light or dark to look for on a page. When scanning in black 
and white, everything on the page is set to either white pixels or black pixels in the final image. If the 
text on the page is a light color, then the text may be gone in the final image as the scanner will 
change those light colors to white pixels. The threshold slider lets you set the level of darkness or 
lightness of the text on the page. 
Dynamic threshold attempts to evaluate the image and dynamically 
adjust the threshold level. These options work best for documents that contain only text such as 
business letters, spreadsheets, reports, etc...
•
Threshold—move the slider to the left or right to set the level of lightness or darkness for the 
scanner to leverage from. 
For example, if you are scanning a document with gray text, such as hand written pencil notes, 
move the slider to the right. This tells the scanner that the level to look for is light, and gray pixels 
are converted to black pixels instead of white. If the overall tone of the original document is dark, 
such as a colored background that may interfere with detecting black, move the slider left. This 
tells the scanner that the level to look for is dark, only very dark areas such as text are converted to 
black pixels.
If you are scanning documents that are in good condition, with black text on a white background, 
the default threshold option will properly scan the item. This level only needs to be adjusted if the 
scanned image does not have image clarity similar to the original.
•
Sensitivity—move the slider left or right to adjust the sensitivity level for dynamic thresholding. 
This slider is only enabled when 
Dynamic threshold is selected in the list. 
						

							Xerox® DocuMate® 3115
User’s Guide 180 Error diffusion, Bayer, and Halftone pattern
Error diffusion
, Bayer, and Halftone patterns are the intentional application of noise (dithering) in the 
image to help alleviate banding when scanning in binary (black and white) mode. For example, if you 
scan a color photo in black and white, the image file will have large blocks of black and white and the 
image barely recognizable. Dithering the image creates a black and white image that is recognizable. 
Below is an example of a color scan, a black and white scan without dithering, and a black and white 
scan with dithering. When the image is scaled down, it may look like a grayscale scan. When the image 
is at normal size or enlarged you will be able to clearly see the dithering pattern, as shown in the close-
up image.
Bayer dither scan - Close up
Color Processing Panel Options
The options in this panel are for setting how the scanner should process colors in specific color modes.
Color scanBlack and White scan Bayer dither scan