What is a photo of a photostat?

The term photostal machine is often used to describe any type of machine that can create duplicates of text or graphic documents. Modern photocopies, using techniques that first commercially introduced commercially, Xerox Company at the age of 50, is sometimes called photo plays. However, this use is incorrect. The real photo on the photo is another type of duplicating device that developed at the beginning of the 20th century by two American companies. The name of the Photatte comes from the name of one of the companies, Photostata, which was the division of Eastman-Kodak.

Although the term photostat is sometimes used today as a general term to describe any copying machine, real photo -plays are generally only found in museums. Document duplication technology has been developed along several lines of research since the Middle Ages, starting with Lism Gutenberg Printing Press. A photo -machine machine is a type of machine that has been developed using a photo as a method to reproduce Docntů.

At the beginning of the 20th century, photography was a relatively new progress that was first introduced by George Eastman in 1884. Previously, the photograph was made using a photographic board. The exposure of the film during the photography process led to a negative image where shading was perverted from real conditions. The negative was then used to create a print that reversed this shading and created a real image.

Photostat machines used this principle to create duplicates of documents. The text, as well as illustrations or even photographs, could be reproduced in this way. The main part of the photo computer was the camera that the operator used to take a document to be copied. Instead of photographic film, however, the negative image was exposed directly to the sensitized paper, which was marked into a machine in the form of a long role. This was then developed as a regularPhotography by immersing a series of chemical baths.

This negative picture was called black printing because a standard written letter photographed in this way would result in a black page with white letters. When this black print was dry, it was then re -taking using the same sensitized paper. The result would be a negative black print, which would again resemble a typical side of the black inscription document on white paper. The desirable many copies were desirable in this way by repeatedly photographing black printing and developing the resulting photos on special paper. The photo plants were bulky, expensive and slow compared to modern copies and the introduction of the Xerox® process at the age of 50.