To fix a printer creating horizontal or vertical bands on my prints, here are some suggested steps:

1. Clean the printer: Gently wipe the excess ink off the printhead using a lint-free cloth.
2. Check the paper type: Use photo paper recommended for your printer.
3. Check the ink cartridges: Make sure they are full and that the print head is not clogged.
4. Align the printhead: Create a test print to align or calibrate the printhead.
5. Install latest printer driver: Update your printer driver with the latest version.