HP 3770 Twain Driver compatibility

[SSriram]

Hi Loic,

Any idea if HP 3770's twain drive is fully compatible/tested? We are using GD Picture Pro 5.x for scanning an image and get a "originals have been removed" message. Note that same code works fine with HP 305x series.

[Loïc]

Hi,

There is no knows problem with GdPicture & HP 3770. We have customers using this model without any problem.

Maybe you should try to download & use the last available edition. Some bug related to hp scanners has been recently fixed.

If the problem persists, write here code you are using to scan pages.

Best regards,

Loïc

[senthilR]

Hi Loic,

Here is the code:

If Imaging1.TwainOpenDefaultSource() Then

Imaging1.TwainSetHideUI (True)
Imaging1.TwainSetIndicators (True)
Imaging1.TwainEnableDuplex (True)

If Imaging1.TwainIsFeederLoaded Then
Imaging1.TwainSetAutoFeed (True) 'Set AutoFeed Enabled
Imaging1.TwainSetAutoScan (True) 'To achieve the maximum scanning rate
Else
Imaging1.TwainSetAutoFeed (False)
Imaging1.TwainSelectFeeder (False)
If Imaging1.TwainHasFeeder Then
Imaging1.TwainSetAutoScan (False)
Else
Imaging1.TwainSetAutoScan (True)
End If
End If
While Imaging1.CreateImageFromTwain(Me.hWnd) <> 0
............
..............
wend

end if


Thanks and regards
M.senthil Murugan

[SSriram]

Hi Loic,

The code posted by Senthil (our team member) is what we use to support both ADF and non-ADF scanners. This works fine for most scanners, however, this fails for the HP 3770 scanner. What we noticed is that when installing HP 3770 on XP, 2 drivers get installed (HP TWAIN and WIA) (on Windows 2000, only HP TWAIN is installed). On XP, if the user selects HP TWain as source, then we get a message "Originals have been removed from tray". On the other hand, selecting WIA enables scan to happen with no issues. On Windows 2000, since WIA is not installed, it uses the HP TWAIN driver and the same error message occurs.

Our questions are:
(A) Have these been addressed in 5.9 or in 5.10?
(b) Is there a way we can enumerate the drivers and use a particular source without the user having to select this?

[Loïc]

Hi,

(A) Have these been addressed in 5.9 or in 5.10?

I don't know. I suggest you to try the last release including better support for some HP scanner. Maybe your problem can be solve using this edition. In all case, updating to the last edition is the first thing to do.

(b) Is there a way we can enumerate the drivers and use a particular source without the user having to select this?

Yes. See: filter-device-list-provided-t440.html

Best regards,

Loïc