photostat


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photostat

(fō`təstăt'), reproduction of any printed or simple black-and-white material, such as drawings or manuscripts, made by the Photostat, a photographic camera. While slower and more expensive than xerographyxerography
, also called electrophotography, method of dry photocopying in which the image is transferred by using the attractive forces of electric charges. A beam of light, usually from a laser, is made to strike the original material, e.g., a white page with black lettering.
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, the process is still used where a high degree of resolution is desired, as in publishing.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Photostat

 

a device used to make photographic copies of two-dimensional originals—blueprints, drawings, and similar documents; it consists of a camera, lighting fixtures, and attachments for holding the original. A Photostat is capable of producing enlarged, reduced, or identical copies on roll photographic paper (ordinary or reversal). Photostats are usually produced in unit with devices for the automatic chemical processing of the photocopies.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Five computers, five printers, three Photostat machine, one AC, one generator, five scanners, five fax machine, electric cooler, refrigerator, five computer tables and chairs, five office tables and chairs were provided while ten meter long glazed glass fixed in DG Prosecution office.
Under this arrangement, one packet each of Rs 5 and Rs 10 denomination notes is being provided to every person against presentation of original CNIC and its Photostat copy.
Photostat copy of page of machine readable passport bearing photograph is made mandatory to be pasted on form.
The following is based on a study and analysis of the "interventions" (or addresses) of Canadian delegates at the Roman Synods (CCCB photostats) and other source materials as well as secondary sources.