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Have cannon lide 35 when i open software and hit scan, i get (cannot open twain source.) device manager says it is working properly, have rebooted computer, vista, and have uninstalled and installed software. ditto with drivers still no twain source.

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Apparently that page has moved. However it is still available in the internet archive:
https://web.archive.org/web/20081023034654/http://www.everythingusb.com/forums/showthread.php?threadid=7337

Suggestions from that page are:
- Check to make sure that Still Image Service is running and Startup Type is set to Automatic
- Install VueScan (alas, this software is not free)
- C:\WINDOWS\twain_32\CNQLxx (xx is the number of your scanner) should be included in the PATH environmental variable
- Re-install the earlier versions of drivers (CSU621) and ToolBox, 3.1. Follow the original Canon instructions from 2003, when Windows asks for the drivers in the setup wizard. I typed in -or browsed- to the C:\Windows\Temp\ folder and chose the old SGSU621. Once rebooted the Toolbox 'saw' the scanner and we were back in business.
- Looking in Device Manager, I saw that the driver version # was that of the WIA driver, not the TWAIN driver. I Uninstalled the driver, with the box to delete the driver from the computer checked. I then disconnected the scanner, reinstalled the TWAIN driver (just to be sure), then reconnected the scanner. Plug and Play found the "new" hardware and installed a driver for it. Checking Device Manager, the driver was now the ver# for the TWAIN driver.

Posted on Dec 16, 2015

  • Michael Wettach
    Michael Wettach Dec 16, 2015

    And by the way the scanner works fine in Linux with xsane and other scan software. It is recognised immediately and just does its job.

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Http://www.everythingusb.com/forums/showthread.php?threadid=7337 shows possible solutions.

Posted on May 11, 2009

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1 Answer

AFTER LOADING SOFTWARE I COMPLETED THE TEST, IT THAT OK BUT WHEN I TRY TO SCAN, PRINT COPY OR ANYHING IT TELLS ME UNABLE TO CONNECT TWAIN SOURCE


Hello.

Give this a try (found online):

Download Irfanview:

http://download.cnet.com/IrfanView/3000-2192_4-10021962.html

Open the main app "i_view32.exe"

With the scanner hooked up, click onto the "file" (tab)

Click "Select TWAIN Source .." and select your scanner in the source box (if it is listed, the driver is functioning)

Click file (tab) then "Acquire"


Hope this helps.

Sep 15, 2011 | Canon CanoScan LiDE 60 Flatbed Scanner

1 Answer

When i try to scan i get this message: unable to open TWAIN source Please check connection then re-start Toolbox the connections are tight


Driver mismatch - the driver of the scanner has forgotten the location of the TWAIN driver because another software has been using it lately. Follow this
http://weblogs.asp.net/jeffwids/archive/2009/11/02/canon-scanner-unable-to-open-twain-source.aspx

Feb 20, 2011 | Canon CanoScan LiDE 30 Flatbed Scanner

1 Answer

CanoScan LiDE 30 Flatbed Scanner: When I click the scan button it says, "Cannot find...


Make sure the USB cable is properly connected at both ends. Close the Canoscan software and then reopen it and try again.

May 18, 2010 | Canon CanoScan LiDE 30 Flatbed Scanner

1 Answer

Can't copy or scan on canoscan lide 25


You need to install the software drivers You need BOTH programs installed on your PC, Toolbox & Scangear. Also use the driver remover first. Then unplug scanner, reboot, install Scangear first, and toolbox second, then reboot, when at desktop next time, plug in the Scanner. Hopefully it should be all good. Read the Help file. http://software.canon-europe.com/products/0010219.asp

Feb 17, 2010 | Canon CanoScan LiDE 25 Flatbed Scanner

1 Answer

Your post for CanoScan LiDE 25


Hi there, yes I did everything per your instructions, Toolbox is installed and it still says, "release the lock switch, detach I/F cable and reconnect. Scanner driver will be closed" and then after clicking on that it says "Unable to open TWAIN source. Please check connection then restart toolbox" I have been to the Canon site and downloaded driver sites and it says everything is working. but when I go to scan it comes up with the boxes I said before. Quite lost at the moment? Thanks Maureen. PS I have unstalled and reinstalled

May 22, 2008 | Canon CanoScan LiDE 25 Flatbed Scanner

2 Answers

Canon scanner


TWAIN is the type of scanner driver that is used for this scanner. It is probably the most common type of scanning driver.

Did you install Toolbox? Not sure? Assuming this is Windows, click Start, All Programs, Canon. Look for open CanoScan Toolbox (4.9 I think). Once this is open, click the 'Settings' button. There should be a drop-down menu for 'Select Scanner'. Make sure this shows the CanoScan LiDE 25. If that scanner is not listed, then the scanner driver is not being seen or may not be installed.

Once it has been verified that the LiDE 25 is selected, click OK. Next, click the 'Save' button. Check the box for 'Display the Scanner Driver'. Now click the 'Scan' button at the bottom.
The next window that pops up should be ScanGear. If this happens, then everything is installed and the scanner is being detected properly. Attempt to scan or preview.

If there was a particular application you were trying to use and you are still having issues with it, please give those details.

May 19, 2008 | Canon CanoScan LiDE 25 Flatbed Scanner

1 Answer

Lock Switch and IF cable


Mine was doing the same thing. When I get on the program, before I click "acquire" to preview and scan, I click OFF the toolbox and then everything seems to be okay and I can go ahead and scan.

Nov 27, 2007 | Canon CanoScan LiDE 25 Flatbed Scanner

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