This version of the Image Scan for Linux software contains only
the free software parts of what Avasys provides.

In particular this version of the Image Scan for Linux software
neither contains any proprietary driver library nor firmware files
nor proprietary software to support scanner network interfaces
nor the proprietary "libesmod" library which would be required
by the "/usr/bin/iscan" frontend which is also not provided.

This package contains only the epkowa driver for SANE, which compiles
and runs natively even on non-i386 platforms. For documentation, see
"man sane-epkowa".

The frontend /usr/bin/iscan was removed because it requires the
proprietary "libesmod" library. This should cause no problem
because the driver epkowa in this version of the Image Scan
for Linux software runs natively even on non-i386 platforms
so that the usual frontends (like scanimage and xsane)
can be used even on non-i386 platforms.

Drawbacks:

The free version of the epkowa driver cannot work for those scanners
that require a proprietary driver library (and a firmware file).
As of this writing (June 2010), those scanners are the following models:

ES-D400, GT-1500, GT-7200U, GT-7300U, GT-9400UF, GT-D1000, GT-F500,
GT-F520, GT-F550, GT-F570, GT-F600, GT-F650, GT-F670, GT-F700,
GT-F720, GT-S50, GT-S80, GT-S600, GT-S620, GT-X750, GT-X770, GT-X820,
Perfection 1250, Perfection 1250 PHOTO, Perfection 1260,
Perfection 1260 PHOTO, Perfection 2480 PHOTO, Perfection 2580 PHOTO,
Perfection 3170 PHOTO, Perfection 3490 PHOTO, Perfection 3590 PHOTO,
Perfection 4180 PHOTO, Perfection 4490 PHOTO, Perfection V10,
Perfection V30, Perfection V100 Photo, Perfection V200 Photo,
Perfection V300 Photo, Perfection V350 Photo, Perfection V500 Photo,
Perfection V600 Photo, Stylus CX4300, Stylus CX4400, Stylus CX5500,
Stylus CX5600, Stylus DX4400

Those models do not work with the free iscan version.
The third-party Image Scan driver software from Avasys
is required for those models.
The Image Scan driver software is made and provided by Avasys
at http://avasys.jp/eng/linux_driver/ where RPM packages
for 32-bit (i386) and 64-bit (x86_64) architecture can be downloaded
(provided you accept the Avasys and Epson license agreements).
The Image Scan driver from Avasys contains proprietary binary-only software.
For some models it is only available for 32-bit (i386) architecture
which does not work when you have a 64-bit system installation.
Some scanners are also supported by another (free-software) driver.
When your scanner model requires a non-free (proprietary) module,
you have to download and install two packages from Avasys:
The 'iscan' package for the base software and an additional
model dependant 'iscan-plugin' package with the proprietary module.

Other scanners may only work via USB but require a proprietary
software package which supports the network interface.
As of this writing (June 2010), those scanners are the following models:

Artisan 710 Series, Artisan 810 Series, EP-702A, EP-802A, EP-902A,
ES-H7200, GT-20000, PX-602F, Stylus Office BX610FW Series,
Stylus Office TX610FW Series, Stylus Photo PX650 Series,
Stylus Photo PX710W Series, Stylus Photo PX810FW Series,
Stylus Photo TX650 Series, Stylus Photo TX710W Series,
Stylus SX610FW Series, WorkForce 610 Series

To use those models via the network interface, you need the above
mentioned third-party Image Scan driver software from Avasys
plus an additional iscan-network-nt package from Avasys
which provides support for the network interface.

Note that the iscan-network-nt package from Avasys does not
provide support for the network interface for all models.
As of this writing (June 2010), the network interface
of the following models is not supported:

AcuLaser CX11NF, AcuLaser CX21, Artisan 700, Artisan 800, EP-801A,
EP-901A, EP-901F, ES-H300, Expression 10000XL,
Expression 10000XL Graphic Arts, Expression 10000XL Photo, GT-2500,
LP-A500, LP-M5000, LP-M5500, LP-M5500F, LP-M5600, LP-M6000,
ME Office 700FW, PM-A840S, PX-501A, PX-601F, Stylus Office BX600FW,
Stylus Office TX600FW, Stylus Photo PX700W, Stylus Photo PX800FW,
Stylus Photo TX700W, Stylus Photo TX800FW, Stylus NX400,
Stylus NX410 Series, Stylus SX400, Stylus SX410 Series,
Stylus SX600FW, Stylus TX400, Stylus TX410 Series, WorkForce 600