sane-coolscan - Man Page

SANE backend for Nikon film-scanners

About This File

This file is a short description of the coolscan backend for SANE.


The sane-coolscan library implements a SANE backend that provides the interface to the following Nikon Coolscan Film scanners: Nikon LS20, LS30, LS1000, LS2000.

Even though the backend has worked for a number of people, there are still some problems, especially in combination with some SCSI card/drivers (AHA-1505/aha152x.o) and the autofocus command. You should consider this backend 'alpha' and be careful when using it the first time.


The configuration file for this backend resides in /etc/sane.d/coolscan.conf.

Its content is a list of device names that correspond to Nikon Coolscan scanners. Empty lines and lines starting with a hash mark (#) are ignored. A sample configuration file is shown below:

 #scsi Vendor Model Type
 scsi Nikon * Scanner

The special device name must be a generic SCSI device or a symlink to such a device. To find out to which device your scanner is assigned and how you can set the permissions of that device, have a look at sane-scsi(5).

Scsi Adapter Tips

Some SCSI-adapters and low-level SCSI drivers do not work correctly with this backend and the Coolscan scanners. These systems hang when the autofocus command is send to the Scanner. To see a list of which card/driver combinations work or don't work have a look at:


The backend configuration file:


The static library implementing this backend:


The shared library implementing this backend:

/usr/lib64/sane/ (present on systems that support dynamic loading)



If the library was compiled with debug support enabled, this environment variable controls the debug level for this backend. E.g., a value of 128 requests all debug output to be printed. Smaller levels reduce verbosity.


On bash:

On csh:


The autofocus command does not work with some SCSI card/driver combinations.

The gamma table is not implemented for the LS1000 yet.

The dust-removal is not working yet.

See Also

sane(7), sane-scsi(5)

The homepage of this backend.

The original version of the coolscan backend by Didier.

Thanks to

Didier Carlier - For writing the original Coolscan backend (without it I would not have started this).

Oliver Rauch - For adapting xsane so quickly to the infrared stuff.

All the other people working on SANE.


Andreas Rick


Referenced By


13 Jul 2008 SANE Scanner Access Now Easy