DM4790 Frequently Asked Questions

The may be two causes for this behavior:

A. The automatic/Manual feed mode level has been set to Manual. Check the plastic level found on top of the scanner. Make sure it is set to Automatic. This ensures that the separation rollers are engaged.

B. The double-fee prevention roller is not installed. The DF prevention roller is pack separately in the DM 4790 box and needs to be installed. Follow these steps:

1. Pull on the scanner cover release and lift the lid to open the scanner.
2. Pull up on the double feed prevention roller cover and remove it from the scanner. It is located at the bottom of the ADF tray near where the paper enters the scanner.
3. Align the plastic gear end on the right side of the roller with the gears in the roller compartment. Make sure the flat side of the roller tip is aligned properly with the slot in the scanner.
4. Carefully insert the gear end into the scanner and angle the roller down into the left side of the compartment.
5. Press gently on the metal bar on the left side to lock the roller in place with the black tab in the compartment.
6. Place the roller compartment cover in the scanner and lower it into place.
7. Press gently on the compartment cover to lock in the scanner. Make sure this cover is fully closed as it may break and cause damage to the scanner if it is not properly in place.
8. Close the scanner when you are finished

You have numerous options to begin scanning. Perhaps the easiest is to use Visioneer’s OneTouch software that comes free with each scanner. OneTouch runs a service on your computer to detect when a Xerox scanner has been connected and powered on. Once a scanner is detected, the OneTouch service automatically launches the OneTouch scanning software. You can open, and begin using your OneTouch software, by clicking on the OneTouch Icon in your Task Tray. Note that, depending on your desktop settings, it may be in the hidden icon section which can be accessed by the up arrow in the task tray. If it is hidden you can drag and drop it to the main task tray if desired.

If you right click the OT icon there is a quick reference guide to help get you started. Once you begin using the software there is a comprehensive help file to answer most common questions on how to use OneTouch.

If your scanner came with the PaperPort software and you chose to have it installed, you can launch the software from the Start Menu or by double clicking the PaperPort Icon on your desktop.

When PaperPort opens, you can use the Setup Wizard to select your scanner or manually select your scanner by following these steps:

1. Click the Scan Settings Icon
2. Click the Select... Button
3. Selecting the scanner’s TWAIN driver in the list of available drivers and clicking OK. You can begin scanning by using the Scan Now icon on the far left of the Menu Bar.

PaperPort also gives you the option to hide or display the scanner’s TWAIN driver interface each time you initiate a scan session (green box on right). This can be a useful option if you do not need to change scan settings very often.

Your scanner’s rollers may need to be cleaned. We recommend a cleaning every 7,000-15,000 scans but this could vary depending on the originals. During use, the rollers on your scanner build up dirt, ink and other compounds that could cause them to become overly smooth and/or alter their diameter. This can lead to mis-feeds, jamming and heavy skewing of the pages as they travel through the scanner. So long as the rollers themselves are not worn, a good cleaning can resolve many paper handling issues. The best way to clean the rollers is to use a properly treated alcohol pad to wipe them clean. Please refer to your manual for instructions on cleaning your scanner. If a cleaning does not solve the problem please contact our technical support department for further help.

Note: If you are scanning a large amount of carbonless paper (two-copy forms which allow pressure on the top form to carry through to the bottom form) your scanner will need a more frequent and more in-depth cleaning. Cleaning carbonless-paper residue (dry-ink particles) requires specialized cleaning instructions. Pease contact our technical support group for help.

Yes, your scanner maintains three counters. Two of these counters can be reset (like a trip-o-meter) and one which cannot (like an odometer). The counters can be used to track scans between roller cleaning and replacements. There are multiple ways to access these counters. One way is from the scanner’s Device settings tab. This tab can be accessed by right clicking on the scanner’s icon in the Windows Device Page and selecting Scan properties from the menu.

You can also find this information in the scanner’s TWAIN driver User Interface Window.

Make sure to enable the advanced view of the driver window by selecting in in the Basic/Advanced drop down found in the upper right corner of the user-interface. Next, make sure to select the DM4790 tab in the Driver Configuration settings (Wrench and Gear icon). You will see the three counters there, two of which have a reset button.

Yes! When using the DriverPLUS TWAIN driver or the Visioneer OneTouch software you can enable what we call Job Building by turning on Manual feed mode.

If you are using OneTouch to scan then you will need to enable the Manual Feed option in the OneTouch Scan Configuration Window under the Page Settings tab. The timeout is the amount of time the scanner will wait for additional paper to be scanned from the ADF before completing the scan job.

If you are not using OneTouch to scan then this needs to be set in the scanner's TWAIN driver user-interface. Simply click the Manual Feed box on the driver’s Document Settings tab. The timeout is the amount of time the scanner will wait for additional paper to be scanned from the ADF before completing the scan job. If you want to force the scan session to complete before the timer runs out click the Abort button.

We do release driver updates from time to time to introduce new features and correct any issues that may have been found in previous versions. You can check the drivers and manuals link below the FAQ link.

To see if you should upgrade check your current driver’s version:

From OneTouch:

1. Left-click the scanner icon in the OneTouch status bar located at the top the OneTouch System Tray interface (between the product name and the green arrows).
2. Left–click the Properties Button in the Hardware Properties Window
3. Select the Device Settings Tab in the Device Configuration Properties Window
4. Check the Driver version. If it is lower than the version listed on the webpage then you should update your driver.

From the Window’s Device Page:

1. Access the devices page from your start menu.
2. Left click the scanner’s icon
3. Select scan properties
4. Select the Device Settings Tab in the Device Configuration Properties Window
5. Check the Driver version. If it is lower than the version listed on the webpage then you should update your driver.

To install the updated driver we recommend powering off your scanner and first uninstalling the existing driver before installing the newer one.

Unfortunately we do not currently offer a Mac compatible driver for the DM 4790.

Unfortunately we do not currently offer any Linux compatible drivers for the DM 4790.

Yes both the OneTouch software and PaperPort software allow you to create searchable PDFs from scanned images.

In the Select Format section of the One Touch Properties Window make sure the right-most icon is set to sPDF. You can change the setting by right-clicking the icon and selecting searchable PDF. If the sPDF selection is not available make sure your scan destination supports sPDF format. Both the PaperPort and Transfer to Storage destinations support the sPDF format.