So next time you hunt for a printer driver, remember: It might be in System32. It might be in a PPD file. Or it might be nowhere at all — because the driver became the handshake between two machines that no longer need a translator.
Here, each manufacturer gets a folder (HP, Canon, Brother, etc.), containing .plugin or .bundle files — self-contained driver packages. macOS also uses (Common Unix Printing System), whose config file lives at: where is printer driver located
/etc/cups/ppd/ (for older PPD-based drivers) So next time you hunt for a printer