Printing on corrugated cardboard can be an easy process with the right tools. Most printers do not have the capability to print on cardboard because of the thickness of the sheets, but you can print directly onto the cardboard using basic screen printing techniques. Making the stencil for the print is the most difficult part of the process, but once the stencil is created the time it takes to replicate the printing significantly decreases.
Create the design or text you want to print on your box on the computer using photo-editing software.
Print out the design or text onto a sheet of transparency paper.
Tape the transparency to your work surface. Using a sharp fine-point craft knife, cut out the design or the letters to create a stencil.
Lay the stencil on top of the cardboard where you would like to print.
Place a thick line of ink on the top left side of the stencil.
Spread the ink across to the right over the stencil using a sponge or squeegee. Make sure the ink has covered every exposed part of the stencil.
Remove the stencil and repeat the process with another piece of cardboard.