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A typical 1940s–early 1950s black-and-white real photo postcard. A real photo postcard (RPPC) is a continuous-tone photographic image printed on postcard stock. The term recognizes a distinction between the real photo process and the lithographic or offset printing processes employed in the manufacture of most postcard images.
Early collotype postcard; 1882 in Nuremberg, signed by J. B. Obernetter Postcard of the "Alte Oper" in Frankfurt, about 1900. Collotype is a gelatin-based photographic printing process invented by Alphonse Poitevin in 1855 to print images in a wide variety of tones without the need for halftone screens.
In gravure printing, the image is engraved onto a cylinder because, like offset printing and flexography, it uses a rotary printing press. Once a staple of newspaper photo features, the rotogravure process is still used for commercial printing of magazines, postcards, and corrugated (cardboard) and other product packaging.
The Mandel No. 1 Photo Postcard Machine was a photo camera built in the years 1911 to 1930 by the Chicago Ferrotype Company. [1] Like cameras from some other brands in that time, the camera produced a small photograph in waiting time. The photograph could be used as a real photo postcard and sent by mail, hence the name.
Photographic printing is the process of producing a final image on paper for viewing, using chemically sensitized paper. The paper is exposed to a photographic negative , a positive transparency (or slide ) , or a digital image file projected using an enlarger or digital exposure unit such as a LightJet or Minilab printer.
Publishers created thousands of photochrom prints, usually of cities or landscapes, and sold them as postcards. In this format, photochrom reproductions became popular. [7] The Detroit Photographic Company reportedly produced as many as seven million photochrom prints in some years, and ten to thirty thousand different views were offered.
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