xerography


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xeroradiography

 [ze″ro-ra″de-og´rah-fe]
the making of radiographs by a dry, totally photoelectric process, using metal plates coated with a semiconductor such as selenium; the image produced by this process differs from conventional x-ray in that margins between tissues of varying densities are more clearly defined. Hence, xeroradiography is especially beneficial in the diagnosis of breast tumors. It does, however, require higher doses of radiation. Called also xerography.
negative mode xeroradiography a xeroradiographic image that is blue and white but that has been reversed so that white represents the dense areas.
positive mode xeroradiography a xeroradiographic image that is blue and white, with blue representing the dense areas.

xe·ro·ra·di·og·ra·phy

(zē'rō-rā'dē-og'ră-fē),
Radiography using a specially coated charged plate instead of x-ray film, developing with a dry powder rather than liquid chemicals, and transferring the powder image onto paper for a permanent record; edge enhancement is inherent.
Synonym(s): xerography

xerography

/xe·rog·ra·phy/ (ze-rog´rah-fe) xeroradiography.

xerography

xe·ro·ra·di·og·ra·phy

(zē'rō-rā'dē-og'ră-fē)
Radiography using a specially coated charged plate instead of x-ray film, developing with a dry powder rather than liquid chemicals, and transferring the powder image onto paper for a permanent record; edge enhancement is inherent.
Synonym(s): xerography.

xerography, (zirog´rəfē),

n a dry radiologic process in which an image is made on a metal plate coated with powdered selenium. The plate is electrically charged in a dark room. Exposure to light or roentgen rays causes the charge to be redistributed in a pattern proportional to the intensity of exposure in various areas of the plate. When “developed” in a cloud of charged particles, the particles are attracted to the areas discharged by radiation, producing the equivalent of a photographic negative.

xerography

xeroradiography.
References in periodicals archive ?
Today, zine-makers and photocopier artists have a great many other tools at their disposal to produce their work and the xerography aesthetic is often romanticised and reproduced using digital means making it hyperreal.
Facts About the Invention of Xerography by Chester Carlson in 1938,
The list of reformatting devices employed by libraries during the past century is a long one: photography, the photostat, microfilm, cheap offset lithography, xerography, video disc technology, the electronic digitization of texts and now of images: Microfilming, after all, is simply one of the chronological steps along the long preservation way.
This electrostatic technology came to be called xerography, and the rest is Xerox history.
And in 1947 the firm bought rights to the xerography process, invented in 1937 by Seattle lawyer Chester Carlson.
Esta tecnologia revolucionaria a la que hace mencion Xerox es Tri-level xerography, que produce documentos de alta calidad, en color realzado, a velocidades de hasta 92 ppm y que dejan atras los documentos planos de un solo color.
Here, the innovations did not build sufficiently on the firm's core knowledge and skills in marketing and xerography.
The early records are difficult to read because of the crude copying technology before the typewriter, carbon paper, mimeographing, and xerography.
Vacuum tubes were replaced by transistors, and carbon paper by xerography.
The process started in the company's Vault Duplication Department, where employees cleaned the film, visually inspected each frame for damage, and then delivered the rolls to the Scanning Division of the Xerography department.
Moreover, its pricing had made consumer acceptance much more likely and facilitated the innovation of xerography.