Understanding Offset Lithograph Stamp Printing: A Detailed Guide

In this presentation Arnie Janson elegantly explains how offset lithograph stamp printing works. Arnie walks viewers through the process using simple and easy-to-understand diagrams, starting with basic lithography and moving on to offset lithography. He defines how the hydrophilic and oleophilic areas are used to transfer the ink and how the dampening and ink rollers function, the roles of the plate and transfer cylinders, and the impression roll. The presentation concludes with real examples of offset lithograph errors, providing valuable insights into what to look for in stamp varieties. This video is an essential guide for anyone interested understanding the technical aspects of stamp printing and collecting.