I need HP laserjet printer drivers 1320n

Laura,

The last HP LaserJet drivers for the 1320n were released for macOS 9. This printer is supported on Linux, and probably Windows. Although it is supported in version 5.3.3 of GutenPrint for macOS, that is true for Mojave, but Gutenprint v5.3.3 is not working correctly on Catalina, and the Gutenprint team has no idea when, or if they can make it work on Catalina.

[Edited by Moderator]

I have a Samsung ML-2950 laser here (1200 dpi, 28ppm) that has no drivers for Catalina. As a network printer, I added it, and the Catalina software automatically sought to find a way to connect it in absence of Samsung drivers. It settled on AirPrint, and now I can print from Catalina without vendor drivers. Your HP 1320n will likely not be recognized as a viable AirPrint device, but you never know, might be worth a try.