There are no official 64-bit drivers for Windows 10 or 11. If you are using a 64-bit version of Windows, the printer will not work natively. Installation Options For 32-bit Windows Users: Visit the Canon Australia Support or European portal.
Which and bit version (32-bit or 64-bit) are you currently using? Laser Shot LBP1120 - Download drivers, software and manuals skachat draiver dlia lbp 1120
However, please note that this printer is an older model with significant compatibility limitations: There are no official 64-bit drivers for Windows 10 or 11