Significant Printing Movements Throughout History

1. Letterpress Printing
   - Invented by Johannes Gutenberg in the 15th century
   - Uses movable metal type to create an inked impression on paper
   - Revolutionized the spread of knowledge and ideas
2. Lithography
   - Invented by Alois Senefelder in the late 18th century
   - Uses a flat stone (limestone) to create an image
   - Used for creating high-quality prints, posters, and maps
3. Photogravure
   - Invented in the mid-19th century
   - Uses a photographic plate to transfer an image onto a copper cylinder
   - Produces extremely detailed and high-quality prints
4. Offset Lithography
   - Invented by Ira Rubel in the early 20th century
   - Uses a rubber roller to transfer the ink from the printing plate to the paper
   - Most widely used printing process today
5. Digital Printing
   - Developed in the late 20th century
   - Uses computer-generated images to create prints
   - Allows for on-demand printing and customization