Copying Machine Works In 8 Colors (Apr, 1936)

Copying Machine Works In 8 Colors

AN IMPROVED type of copying machine is capable of reproducing anything written with pencil, pen, or typewriter in as many as eight colors in a single operation. A gelatin material used in place of a stencil absorbs the inks used in making the original in sufficient quantities to reproduce hundreds of copies.

0 comments
Submit comment

You must be logged in to post a comment.