On Sunday, 28 January 2024 17:43:22 GMT Thelma wrote:
> Systems show Avahi-daemon status: started.
> but it I don't know how it helps me find a local printer.
> 
> I'm puzzled as printers were working last week without any problems.
> I did not do any update or modification to the system but all of a sudden
> they stop working "Unable to locate printer"
 
> The solution was to change printer setting:
> 
> lpd://BRN30055C898DF9/BINARY_P1
> lpd://brother-5370/BINARY_P1
> 
> with:
> lpd://printer-IP-address/BINARY_P1
> lpd://printer-IP-address/BINARY_P1
> 
> How to set  Avahi-daemon to start automatically deleted printer?

I don't think avahi is needed unless you are printing from different temporary 
clients and you want the printers to be automatically discovered on the 
network.  If this is not your use case, you could try something like this:

lpadmin -p 3170-color -E -v ipp://<IP_address_here>/BINARY_P1 -m everywhere

Which will use the CUPS driverless method:

https://wiki.gentoo.org/wiki/Driverless_printing