hi Alexander and all,
Il 17/07/20 17:50, Alexander Pevzner ha scritto:
Hi Valerio,
BTW, Lide 400 known to work via IPP over USB, and in this mode it
supports eSCL protocol.
i don't understand
I'll explain :-)
There is such a thing, that driverless printing and scanning.
"Driverless" means that device implements vendor-neutral protocol, and
driver is very generic and works with a large class of compatible
devices, regardless of their models and manufacturers.
Normally, driverless printing and scanning were protocols designed for
network-connected devices. IPP over USB is a technology, that allows to
"speak" with compatible USB devices as if they were connected to the
network.
IPP over USB requires additional piece of software, the ipp-usb daemon,
which connects to device via USB and exposes it to the network (by
default to localhost only).
eSCL is a scanning protocol, supported by many devices from many
vendors. It is also known as Apple AirScan.
Both protocols (IPP over USB and eSCL) are supported by your device.
You will need ipp-usb daemon, to enable IPP over USB, and sane-escl or
sane-airscan, to utilize eSCL scanning.
I don't know if somebody tested sane-escl with your device, but
regarding sane-airscan, two independent users reported that it works
with Lide 400.
that scanner has no connection with the net, so they said.
but i have solved: i installed again the package i found in
http://www.sane-project.org/snapshots/
following the instructions: with no root privilege for ./configure and
make, and make install as root.
the first time i had done all as root.
scanimage -L
device `pixma:04A91912_43C82A' is a CANON CanoScan LiDE 400
multi-function peripheral
scanimage -V
scanimage (sane-backends) 1.0.30-914-g8bdd27d14; backend version 1.0.30
thanks all
valerio
