Thomas Edison patents the mimeograph (1876–1887)

Thomas Edison received US patent 180,857 for Autographic Printing on August 8, 1876, establishing the basis for the mimeograph. This invention involved forcing ink through a stencil onto paper, a process later termed mimeography. Edison subsequently secured a second patent in 1880 for preparing stencils, which was licensed by Albert Blake Dick in 1887, who coined the term 'mimeograph'.

Episodes

Background and detail

Background. The mimeograph, also known as a stencil duplicator, is a low-cost machine that forces ink through a stencil onto paper. While the earliest form was invented in 1874 by Eugenio de Zuccato, Thomas Edison received US patent 180,857 for Autographic Printing on August 8, 1876. This technology became common for printing small quantities of documents in offices, classrooms, and churches.

Patent Development. Edison's initial patent covered autographic printing. In 1880, he obtained a further patent, US 224,665, for the method of preparing autographic stencils. This process involved using a file plate, a grooved metal plate that perforated the stencil when written on with a blunt metal stylus, refining the practical application of the duplicating technology.

Commercial Licensing. The term 'mimeograph' was first used by Albert Blake Dick when he licensed Edison's patents in 1887. This licensing marked the transition from Edison's technical invention to a commercial product name, establishing the terminology that would persist for the duplicating technology used in various institutional settings.

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