Question about Visioneer 4400 Flatbed Scanner

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Problems scanning Until recently I had a working scanner, now each time i click twain the scan manager pops up and tells me to please verify that I have unlocked the scanner hardware, and that the unlock is on the bottom of the scanner. There are no buttons on the base of my scanner.... I have tried removing the programme and reinstalling but the problem persists. Would appreciate any suggestions

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Re: Problems scanning


If there is a second or main account on your computer that may be it.....

Posted on Apr 10, 2008

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Need Twain driver for windows 7 for canon Scan N12400 flatbeb

The TWAIN drive should be installed when one installs the actual "Drivers" for the unit itself, accordingly I provide you with the download link below.... look for and install ALL drivers and software, especially the Scan manager and TWAIN drivers....

Sep 28, 2011 | Canon CanoScan N1240U Flatbed Scanner

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Using XP Pro, with correct driver. Error is "Unable to Select Twain Source. Edited Path to include: %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem; C:\WINDOWS\twain...


You will need to install the twain driver for the scanner.
Click on the link below and download the driver. Once its downloaded execute the .exe file. you will then get a small box pop up with "Unzip" on the right hand side. Look at the path of the unzipped file on the left hand side and save it to your desktop. For example C:\users\yourname\desktop instead of C:\Users\yourname\AppData\Local\Temp. The file extracts quite fast so go to the desktop and run the SETUPSG.EXE file. When its installed you should be able to use the scanner.

Download Canon Scan gear here >>>>>>>

Good luck and kind regards.

Dec 14, 2010 | Canon CanoScan N670U Flatbed Scanner

1 Answer

Epson Perfection v200 stopped working on my imac

Try to scan using epson scan to isolate the issue. You can launch epson scan from applications. If you can scan using epson scan, call adobe to troubleshoot further on photoshop.
If you get an error epson scan cannot be started or if it won't launch. It could be connection or driver issue.
To uninstall/re-install twain on mac, follow the instructions:
- go to applications. Trash epson scan and epson scanner monitor
- Go to library then application support. Trash epson scanner module.
- Go to library then image capture. Trash twain data sources.
- Go to the hard drive. Click on user. Click on the name of your computer. Click on library. Click on preferences. Click on epson. Trash epson scan.
- Empty the trash.
- Restart your mac.
- Log on to Type in v200 in the search box on the top right corner of the page then click search. click on the first search result. Click on the drop down box and select macintosh operating system instead of windows. click on the second driver down, epson12527.dmg then click on download now. Select no thanks, i prefer not to receive this information then click accept. Install the epson scan installer after the download.
- Then try to scan using epson scan.
If epson scan won't launch or you get an error, try a different usb cable.


sherlyn c.

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May 21, 2009 | Epson Perfection V200 Flatbed Scanner

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Stopped at start-up after months of no problems

Please trash the twain driver completely.
- Trash epson scan and epson scanner monitor from applications.
- Go to hd. Go to library, then application support. Trash epson scanner module.
- Go back to library. Click on image capture. Trash twain data sources.
- Go to the hd. Click on users. Click on your computer name. Click on Library. Click on preferences. Click on the epson folder. Trash epson scan.
- Empty the trash and restart your mac.
Log on to Install the epson11926.dmg.

Apr 28, 2009 | Epson Expression 1640XL Flatbed Scanner

1 Answer

Twain error

Right Click on My Computer/Computer if Vista........ Click on Properties then click on Hardware click on Device Manager...... On that list u will see the Printer Name with an exclamation Mark........ Right Click on that Click on Update Drivers...... Insert the CD to the drive....... Select Browse My Computer for Driver software..... Click on Browse and then Double Click on Computer go to the Dvd Rw Drive select the Driver and Click on Next then after that it will say Driver has been Installed successfully...... Click on Finish...... Good Luck

Jan 28, 2009 | Visioneer OneTouch 7100 Flatbed Scanner

3 Answers

Unable to select TWAIN source

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

so i tried an we go..
on vista 64 os/vista any 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.

Jun 24, 2008 | Canon LIDE20 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

3 Answers

Mustek a3 usb 1200 pro scanner problem

I bought one a couple of years ago. After plenty of hit-miss after trying to get it to work on my fresh XP installations, I have a solution. Installing it the normal way simply doesn't work.

First, go to 'start', 'control panel' then 'system'. Click the 'hardware tab' then press 'device manager'. You'll see a list of hardware.

If your scanner is already plugged in, find it (it could be listed under 'imaging' or under 'other devices'. You should see a yellow exclamation point indicating it's there but not working.

If you go to 'control panel... system' first, and then plug in your scanner, it will pop up automatically.

Now, right click on it, select 'update driver'. A window pops up. Insert the CD, then select 'have disk' and install normally.

Installing the remaining software is optional (acrobat 4.05 and so on)

I've used the "Panel" to scan my pics. Working like a charm.

Feb 07, 2008 | Mustek A3 USB Flatbed Scanner

2 Answers

Unable to use film adaptor

Please do the following to scan slides or negatives in manual mode of the Epson TWAIN:
1) In the program you are working from, begin the scanning process. If working in full auto mode, as the scan begins you will see a message that reads TO CANCEL SCANNING IN FULL AUTO MODE AND SWITCH TO MANUAL MODE, CLICK CANCEL. At this point, click CANCEL, then MANUAL MODE.
2) You will now see all Epson Twain settings displayed. If the scanner has not previewed automatically, click the full page preview button (icon of a paper with one corner folded down).
3) Ensure the settings on the right hand side of the Twain are correct. For example, the DOCUMENT SOURCE for transparencies must be either TPU: COLOR NEGATIVE FILM, TPU: MONOCHROME NEG or TPU: POSITIVE FILM.
FILM here indicates that the item being scanned is transparent to light; this setting is also used for slide scanning. Positive indicates that the image is in true colors (ie the grass is green and sky is blue), whereas negative indicates reversed colors, as produced in some photo finishing processes. (If you are scanning a black and white slide in true colors, choose TPU: POSITIVE FILM as the DOCUMENT SOURCE and BLACK AND WHITE PHOTO as the IMAGE TYPE.)
If the DOCUMENT SOURCE is flatbed, the scanner will not activate the backlight in the transparency unit. If the DOCUMENT SOURCE is greyed out and you cannot select a TPU option, close the twain, reseat the power/communication cable connecting flatbed to TPU, then re-open the twain and try again.
4) Ensure the other twain settings are correct for the type of scan you are doing.
IMAGE TYPE should be color photo for all positive or negative color transparencies, or BLACK AND WHITE PHOTO for monochrome transparencies.
DESTINATION is unimportant, however you should select a RESOLUTION appropriate to what you plan to do with the scans. (There are no hard and fast rules for DPI. As a general guideline, if you are saving scans at original size, a resolution ranging from 400-600 DPI should capture enough information to faithfully record the image. If the slide or negative will be enlarged, you will need to increase this DPI accordingly. We have no guidelines on this; you will need to experiment and view the output to gauge the appropriate input DPI from the scanner.)
PREVIEW. If your scanner is doing an AUTOMATIC THUMBNAIL PREVIEW, the slides will automatically preview and appear in boxes on the left side. Here, you can select or deselect the slides you wish to scan.
If you recieve a message that the scanner could not find the film, click the CONFIGURATION button and uncheck AUTOMATIC THUMBNAIL PREVIEW FOR FILM, then OK, and try the PREVIEW button (page with corner folded down) again.
In this mode, you will have to manually marquee or crop the slides you wish to scan. Use the left mouse button to lasso one slide inside a box made of dotted lines, then click scan. Only the selected area will scan. Repeat this process (manually crop then scan) for as many slides or filmstrips are on the bed.
5) Click CLOSE once scanning is complete. The images will now transfer to the application in use.

Aug 16, 2007 | Epson Perfection 1200 Photo Flatbed...

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