I put this tutorial together for an upcoming workshop with high school art teachers. I often use this exciting process in my own work, but have not yet worked out how to bring it into my elementary art room. You can click this link to download a pdf or continue reading below. Pronto Plate Workshop Handout
PREPARING YOUR IMAGE: Images may be printed from a laser printer, drawn by hand, or a combination of the two. Possible drawing tools include: Sharpie, ballpoint pen, china marker, litho crayon, india ink, or other waterproof materials.
If using a laser printer: Line drawings or high contrast, gritty images work best. You can use a copy machine to transfer an image to a plate (this will add a bit of contrast), or print directly from a computer. I usually begin with the following formula in Adobe Photoshop and adjust to fit the needs of the image. The following is just a place to start. Experiment and see what works for you. Note: this process will not work with inkjet printers.