SETUP: LinuxMint 19.2 (64 bit), Canon MX922, CUPS 2.2.7
Drivers: standard LinuxMint MX922 (auto-installed via USB connection to printer) plus installed canon-supplied packages:
cnijfilter-common_3.90-1_amd64.deb
cnijfilter-mx920series_3.90-1_amd64.deb

SYMPTOMS:
MX922 prints perfectly when connected via USB cable
CUPS (via localhost:631) sees the printer
Wifi connection works to see internet; MX922 prints via wifi from a separate Win7 laptop
When USB cable is disconnected and a "Print Test Page" or a sample page is attempted to print, PRINT JOB FAILS with message, 'Idle - "File "/usr/lib/cups/filter/rastertogutenprint.5.2" not available: No such file or directory'
Checking the file system, that error is correct - that filter file is not in that directory.
I downloaded "gutenprint-5.3.3.tar.xz (only version I saw), and that package is in my Downloads subdirectory - but I don't know how to unzip/install a "xz" package, or if this will correct the problem.
Any help would be appreciated!

If I understand you correctly, your printer is connected to the network as evidenced by the fact that Windows can successfully print to it. Did you try configuring CUPS (the Linux printing environment) to connect to it yet? The print queue for a USB-connected printer is different to that for a network-attached printer. Since you have the Canon drivers, navigate to where you downloaded them (eg ~/Downloads), and find the install.sh script as described here
https://askubuntu.com/questions/1043...untu-18-04-lts

To paraphrase slightly (make sure that the printer is turned on first)...

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