Here are some suggestions you can try to fix issues with printer toner or ink smearing:

1. Clean the Printer: Start by cleaning your printer, ensuring the toner and ink cartridges are properly seated.
2. Check Printer Settings: Double-check your printer's settings to make sure you don't have settings that are incorrect or changed.
3. Align Printer Nozzles: Align the print nozzles using the built-in Printer Optimization options in the printer settings.
4. Clean the Toner Cartridge: If the smearing is coming from the toner cartridge, replace or clean the cartridge.
5. Check the Paper Type: Ensure the type of paper you're printing on is appropriate for the printer and the type of ink or toner.
6. Check Ink Type for Watercolor Papers: Use a pigment based ink if using watercolor paper to avoid smearing.