Troubleshooting Scanner Connections


Most TWAIN drivers will not require any special adjustments, but some drivers may have special requirements. Because TWAIN drivers are written to an agreed upon standard by the scanner's manufacturer, we have found that they vary in how well they function. Driver issues are the main reason we cannot explicitly say a particular scanner is supported in the Remark software. You will also want sufficient permissions within the Microsoft Windows environment so that your desired settings will be held as defaults.

In general, if you experience problems scanning in Remark Office OMR with your TWAIN driver, check your scanner driver's settings. Go to Tools|Scanner Properties and place a check in the box in option for Show TWAIN interface. Click OK and close the window. Then initiate a scanning operation using the Read option.

Although driver interfaces vary depending on the scanner's make and model, they will display some or all of the following settings: 

  1. The resolution on the scanner, measured in dots per inch (DPI), should be set at 200 to 300 DPI (300 if using barcodes or OCR).
    Tip: Choose one setting and always use it.
  2. Remark Office OMR supports color and grayscale scanning, however, it is not necessary. Most scanners will achieve optimum scanning rates when used in black and white scanning mode.
  3. You can also utilize the scanner's brightness, sometimes called threshold, setting to make scanned images lighter or darker. Under normal conditions, you want to use the scanner's default brightness setting. If, however, you need to make shading or a lightly colored paper background drop out, or disappear, you could raise the brightness setting to accomplish these tasks. In some circumstances, you could set the brightness setting to a darker level to help compensate for light marks or lightly filled marks on forms.
  4. If your scanner allows you to adjust the scaling setting, you want it to be set at 100%.
  5. You should also verify that the page size your scanner is using matches the actual page you are scanning.

Once you have the settings you need, scan the page. If all goes well, you can try hiding the TWAIN interface again; some scanners support this and some do not. If you continue to experience issues with Remark recognizing your scanner, ensure the scanner is working properly in a different application.

Tips:


Note: To learn how to process pre-scanned image files using a networked scanner or MFP with Remark Remark Office OMR you can view the free, five minute module at http://www.gravic.com/remark/support/training/selfhelp/index.html.



Article ID: 136
Created On: Tue, Aug 5, 2014 at 7:13 AM
Last Updated On: Fri, Aug 8, 2014 at 9:00 AM

Online URL: https://support.gravic.com/remark/kb/article/troubleshooting-scanner-connections-136.html