Comment 26 for bug 1811504

> I've uninstalled hplip and removed /usr/share/hplip dir and reinstalled it back.
>
> Unfortunately it always ask for plugin installation even modifying models.dat
> (stripping hp_).

The stripping would (IMO) only be needed for a network printer with mdns. Being asked (or made) to install a plugin is beyond my experience.

> So without plugin the scan process doesn't start.. instead if I install the plugin
> it says 503.
> Frustating!

Very; particularly when all the documentation indicates one isn't need. Sorry it didn't work out.

> Do you know how to ask support directly to hplip developers?

There is only Launchpad. HPLIP developers do read the reports and often respond to them.

Scanning here is generally of full pages over wireless with a set resolution. Nothing fancy; just get the job done. Users are given the script scan.py, obtainable from

  https://github.com/kno10/python-scan-eSCL

Make it executable and

  scan.py <output_file> <resolution>

output_file is a jpeg. With your device, resolution is in the range 200-600. Rudimentary, but it works well for me. All processing takes place on the device, so no HPLIP or other software is needed. It could suit you.

--
Brian.