Canon MX530 printer not recognised by CUPS

[JWC]

Trying to install a Canon MX530 on Ubuntu. None of the standard interfaces work - they seem to register (IPP and LPD), but the printer does not react to test pages or a simple text file.

Why is it so complicated on Ubuntu? Windows recognised the printer with almost no input from me.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: cups 2.2.7-1ubuntu2.8
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
Date: Sat May 8 17:59:11 2021
KernLog:

Lpstat:
 device for Canon: lpd://192.168.1.106
 device for Canon2: ipp://printer:631/ipp/print
MachineType: Notebook W65_W67RN,RC1
Papersize: a4
PpdFiles:
 Canon: Canon MX530 series - CUPS+Gutenprint v5.2.13
 Canon2: Canon MX530 series - CUPS+Gutenprint v5.2.13
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-29-generic root=UUID=e490fa77-711f-433e-889c-b433bb6fb6a3 ro quiet splash vt.handoff=1
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/12/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.05.01
dmi.board.asset.tag: Tag 12345
dmi.board.name: W65_W67RN,RC1
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.01:bd05/12/2016:svnNotebook:pnW65_W67RN,RC1:pvrNotApplicable:rvnNotebook:rnW65_W67RN,RC1:rvrNotApplicable:cvnNotebook:ct10:cvrN/A:
dmi.product.family: Not Applicable
dmi.product.name: W65_W67RN,RC1
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook