[xubuntu] unable to scan using HP laserjet m28W

Hi all,
i am an old ubuntu user, and everytime i needed any help i was very lucky to be able to find it.
Now, unfortunately I am not.
I bought a multifunction printer/scanner from hp, since I read it was compatible (i needed to scan over wifi) but it seems it is not so easy to configure.
I installed hplip package with all dependencies, so that

Code:

hp-doctor -r

does not give any error.
However when I start the scan command, it starts BUT after few seconds stops with error:

Code:

$ hp-scan HP Linux Imaging and Printing System (ver. 3.19.1) Scan Utility ver. 2.2 Copyright (c) 2001-15 HP Development Company, LP This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to distribute it under certain conditions. See COPYING file for more details. ----------------- | SELECT DEVICE | ----------------- Num Scan device URI -------- ------------------------------------------------------------- 0* hpaio:/usb/HP_LaserJet_MFP_M28-M31?serial=VNC3K90935 1 hpaio:/net/HP_LaserJet_MFP_M28-M31?hostname=NPI45DD55.local 2 hpaio:/net/hp_laserjet_mfp_m28-m31?ip=192.168.1.4&queue=false Enter number 0...2 for device (q=quit, <enter>=default: 0*) ?0 warning: No destinations specified. Adding 'file' destination by default. Using device hpaio:/usb/HP_LaserJet_MFP_M28-M31?serial=VNC3K90935 Opening connection to device... Resolution: 300dpi Mode: gray Compression: JPEG Scan area (mm): Top left (x,y): (0.000000mm, 0.000000mm) Bottom right (x,y): (215.900009mm, 297.010681mm) Width: 215.900009mm Height: 297.010681mm Destination(s): file Output file: warning: File destination enabled with no output file specified. Setting output format to PNG for greyscale mode. warning: Defaulting to '/home/gennaro/hpscan001.png'. Warming up... Scanning... error: SANE: Error during device I/O (code=9) Closing device.

I searched a lot about this error, everyone is having it but not many soved it in the end.
I obtain the corresponding error also with xsane

On the other side, I tried Vuescan, and it worked perfectly.
However, before buying the version, i would like to understand if I missed something or not.

Any suggestion?

Thanks in advance