[sane-devel] scanning negatives using HP4850 and genesys backend

[Ralph Little]

Hi,
According to our Supported Scanners list 
(http://www.sane-project.org/sane-supported-devices.html) the genesys 
backend doesn't yet support the slide scanning feature of this device. 
It requires additional code to drive the extra hardware involved.
We don't have an active maintainer for the genesys backend at the moment 
unfortunately, so I don't know when someone would be able to get to this 
task in the future. :(

Regards,
Ralph

On 2026-07-30 20:58, 7xsuazlhhtls at gmail.com wrote:
>
> |I recently acquired an HP Scanjet 4850 scanner.  The document 
> scanning works with no problems.  This particular scanner has a 
> negative/slide scanning component built in to the lid of the device.  
> This includes a separate lamp to illuminate the film for scanning.  
> The lamp in the lid comes when I run a hardware self test procedure 
> but I have not discovered any way to have the lamp come on when 
> scanning using sane.
>
> Is this capability supported?
>
> info about my setup ---
>
> HP Scanjet 4850
>
> $ scanimage -V
> scanimage (sane-backends) 1.4.0; backend version 1.4.0
>
> genesys backend
>
> Fedora Linux 44 (Workstation Edition)
> Linux 7.1.5-200.fc44.x86_64|
>
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