Unable to "communicate with TWAIN data source." ??

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

canning functionality from the LJ3380 and CLJ2840 series All-in-One devices may not function until the correct Twain Data Source is selected by the user. This can be done by attempting to scan from the foundation scan executable "hppscan2.exe ".

• For the LJ3380 series this is located in C:\Program Files\Hewlett-Packard\LJ3015_LJ3020_LJ3030_LJ3380->hppscan2.exe
• For the CLJ2840 this is found in C:\Program Files\HP\Digital Imaging\bin->hppscan2.exe

When the "hppscan2.exe " is launched from this location where it resides, a dialog box will open with a "Select Source " box listing the installed Twain scanning devices available. If this box is not seen, then there is only one Twain device installed. In some instances user input is needed to chose the "correct" Twain data source for scanning to be successful from the LJ3380 and CLJ2840 series devices. If the incorrect Twain data source is selected- an error "Cannot initialize device " will be seen.

Hi


Thanks for using FixYa. Due to any reason when the HP Communications process fails the HP Scan application won’t work. To resolve the issue you’ll need to follow the procedure as given below---

1. Force Quit HP Communications (if running)
2. Force Quit HP Scan (if running)
3. Turn the printer off
4. Turn the printer on
5. Select Scan Picture from the HP Director application
6. When the HP Scan application complains, press Reset
7. HP Scan will then hang, but HP Communications will restart
8. Force Quit HP Scan (again)
9. Select Scan Picture from the HP Director application (again)

Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks

Rylee

If you have loaded the software for the printer/scanner.
Go to your HP director Icon and start this program.
you should see your Scanner / printer listed under Select device.

You can place a document/picture in the document feeder on top.
OR you can place the document / picture directly on the glass.
(Lift the hinged lid to reveal the scanner glass)
Don't worry the document feeder uses a different scan wand.
Now document / picture in place select the Scan document or Scan picture icon from the HP director. Depending on which type of document you have placed in / on the scanner.

Scanner should warm up then scan presenting you with a preview image. From here you can decide what and where to go.

You are not limited to just the HP director.
Other applications can use the twain source to activate your scanner software. This will transfer the scan to your application.
Irfanview is a prime example. Image viewer that will let you "Acquire" and image from you scanner. Be sure to select the twain source.

Good luck!

Unfortunately the 5510 is no longer supported by HP for OS X 10.5.x and up. On the Apple tech site, they actually redirect you to a page the HP upgrade page (read: buy a new one).

If anyone can think of any 3rd part software that works with this, please post!

Thanks!

Scanning Without HP Hardware

1. Click Start
2. Control Panel
3. Click Scanners and Cameras
4. Click on the Icon and follow the Scanner and Camera Wizard instructions.
5. Select the HP scanning device from the TWAIN source list
6. Click File and then Scan New .

OK

PLEASE REINSTALL THE PRINTER DRIVER AGAIN.

I get this every now and then, usually because, during a scan, I abort for some reason--reset the computer, force-quit, whatever.  The printer driver, I think, leaves some breadcrumbs that it can't recover from when it runs again.
Anyway, I reset the printing system and install the latest HP driver.  If that doesn't work, I delete the HP folder in the Applications folder; then remove whatever files I can find in the /Library folder such as Application Support/Hewlett-Packard, Application Support/HP, any HP file in Preferences, Image Capture/TWAIN Data Sources/HPScanPro.ds.
Then reinstall the driver and things work fine.  I'm thinking this last item, the HPScanPro.ds in the TWAIN folder might be the culprit but I haven't tried just remove it alone--after I remove everything things work so I can't "try it again"...and don't want to!  =)
Anyway, I've had success with this method.  Good luck!

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.

'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.