Samsung Laser Printer on 10.15.4 - M283x Series blank pages - Samsung Xpress SL-M2835 Laser Printer series
There is another thread listing the issue. Basically you need to remove the printer and then install the NEW driver from Samsung HP - https://support.hp.com/us-en/drivers/selfservice/samsung-xpress-sl-m2835-laser-printer-series/16462889
Select the latest driver from March 2020 -
Samsung_Mac_10.15_Driver_V3.91.00.dmg (19.2 MB)
Install the driver and then reinstall the printer and select the printer from the pull down list. Don't use the AIR PRINT option. No idea if AirPrint still works.
More info and a better description here on the HP website.
iMac Line (2012 and Later)