What are the principles involved in the Xerox machines?
A photocopier works on two fundamental principles: the fact that opposite charges attract and the tendency of certain materials to become more electrically conductive after absorbing electromagnetic radiation, such as UV, infrared, visible light etc. (photoconductivity).
What do you mean by photostat machine?
Noun. 1. Photostat machine – a duplicating machine that makes quick positive or negative copies directly on the surface of prepared paper. Photostat. copier, duplicator – apparatus that makes copies of typed, written or drawn material.
What is the scientific name of photostat?
The verbs “photostat”, “photostatted”, and “photostatting” refer to making copies on such a machine in the same way that the trademarked name “Xerox” was later used to refer to any copy made by means of electrostatic photocopying. People who operated these machines were known as photostat operators.
Is photostat and photocopy same?
When used as nouns, photocopy means a copy made using a photocopier, whereas photostat means a photocopy, especially one made by a . When used as verbs, photocopy means to make a copy using a photocopier, whereas photostat means to make such a photocopy of.
Who invented photostat machine?
Oscar T. Gregory
The Photostat Machine was a brand of machines that uses camera projection techniques to produce copies, it was first invented by Oscar T. Gregory in…
Who invented xerography?
Rasmus Malling-HansenPál Selényi
In 1938, Chester Carlson invented xerography out of two natural phenomena already known: materials of opposite electrical charges are attracted, and certain materials become better conductors of electricity when exposed to light.
What machine is like photocopy machine?
Answer: Printer is similar to a photocopy machine ….
What was the purpose of the Photostat machine?
The Photostat Corporation was eventually absorbed by Itek in 1963. Both Rectigraph and Photostat machines consisted of a large camera that photographed documents or papers and exposed an image directly onto rolls of sensitized photographic paper that were about 350 feet (110 m) long. A prism was placed in front of the lens to reverse the image.
What’s the difference between a photocopier and a photostat?
The “Photostat” name, which was originally a trademark of the company, became genericized, and was often used to refer to similar machines produced by the Rectigraph Company. Photocopy A ‘photocopier’ (also known as a copier or copy machine) is a machine that makes paper copies of documents and other visual images quickly and cheaply.
How big was the Rectigraph and the Photostat machine?
Both Rectigraph and Photostat machines consisted of a large camera that photographed documents or papers and exposed an image directly onto rolls of sensitized photographic paper that were about 350 feet (110 m) long.
How does a prism work in a photostat machine?
A prism was placed in front of the lens to reverse the image. After a 10-second exposure, the paper was directed to developing and fixing baths, then either air- or machine-dried.