Unable to communicate with the TWAIN device

Using window 7 scanner driver and try again

This may happen because of overload to memory. If all are ok and still this error comes up means, the twain driver takes more time to load. wait for some seconds and then click scan, it will go.

Try to clean the hard disk and defrag the drive.

What is your operating system?

If XP, check your device manager to see if the scanner is being recognized by XP.

What is your scanning software?
Try to use another scan program ( a free demo version should work fine.)

Are you using TWAIN or an ISIS driver? If it is a TWAIN driver, then any Photo editing program should be able to connect ( usuallly!?).

tried uninstallin and installin canon scanner drivers..nothing works..still seeing unable to select twian source..

so i tried an alternative..here we go..
on vista 64 os/vista any version..click Start>All programs>Windows fax and scan

next click new scan on top and that got me going.

some say there are issues with the way usb talks to old scanners with new operating systems like mine (vista 64). hope it helps until you find the actual cure.

For any device to work you need 'drivers'. It is difficult to find a driver for an old product with a new OS like vista. You can try to get drivers for XP or Win2000 and use them.

S. Mohan

Step 1 - Verify the scanner's power and connection

1. Verify that the scanner is turnned on
2. If the Check or Ready light on the scanner is flashing, click VIS1023 - Check Light Blinking on ADF Scanner for more information
3. Check that the USB cable is connected to both the scanner and the computer
   • It is recommended that the scanner be connected directly to the back of your computer with a 6 foot or shorter USB cable

Step 2 - Redetect the scanner in device manager

1. Turn the scanner off
2. Click Here and select "Run" or "Open"
3. The Windows Device Manager will open
4. Go to "View" and choose "Show Hidden Devices"
5. Click the "+" next to "Imaging Devices". This will show all Imaging Devices previously and currently connected to the computer.
6. If listed, right-click on the DocuMate 510 then left click on "Uninstall"
7. If asked to confirm the uninstall, click "OK"
8. If the scanner is listed more than one time, uninstall ALL occurrences of the scanner
9. IF you see "?Other Devices" in the device manager list, click on the "+" to view the list of Other Devices
10. Right click on any instince of the scanner in this list then left click on "Uninstall"
    The scanner may be listed as any of the following:
    • USB Scanner
    • USB Device
    • Unknown Device
    • DocuMate 510
11. Once the scanner has been completely removed from Device Manager, turn the scanner back on

If there is no Found New Hardware message when the scanner is turned back on and the scanner is not listed in Device Manager under Imaging Devices or Other Devices, this typically means the scanner is not communicating correctly with the computer. Try plugging the scanner into a different USB port or using a different USB cable.

Try this link:

Note: You must uninstall your current driver and OneTouch software to install an updated driver.
https://www.xeroxscanners.com/Knowledgebase/Articles/VIS1056%20-%20Step%206%20Contact%20Support.asp

Hello,

 

I have seen your message stating that "Initialization failed - Unable to acquire TWAIN-compliant device" error is received when trying to connect USB-Parallel type to your Laptop.

 

Well,  Printer  Panasonic UF4100, recommends to use only " Printer/Scanner Interface as Bi-directional Parallel (IEEE1284) " means you need to use Parallel cable to connect Printer to the Computer/Notebook.  You may receive some communication error messages if you are using a  "PORT REPLICATOR CABLE"( USB TO PARALLEL connector).  The error message that you have received is related to the communication error. Futher, if you use same USB- Parallel cable for long time the Printer Hardware functionality might go bad, since Printer memory gets confused and will not read or detect the Cable , since it is not a cable to use  mentioned by Panasonic Manufacturer.

 

Let me tell you, general functionality of Printer like Printing would work even if you use USB-Parallel cable. But it is not a case with Scanner and Fax functionality.

 

Hence, I recommend you to use only Parallel cable to connect your Printer to the Laptops.

 

I hope that this will resolve the issue for you.

 

You can email me at [email protected] if you need further assistance.

 

Bye.

Make sure that your scanner cable is not tightened too much. I had this challenge and found that by simply loosening the cable connection, this error message dissappeared.

'Twain' only means 'Technology without an important name', as this is refering to your printer/scanner, i would suggest that you disconnect the printer and remove any driver from Add/Remove programmes. Re-install printer software/driver and re connect printer when prompted and if possible in a different usb port, if that's how it's connected. If the problem persists and the pc is unable to communicate with the printer the fault will lie with the hardware. Hope it's only a driver glitch.