reader

(redirected from Readers)
Also found in: Dictionary, Thesaurus, Medical, Legal, Idioms, Wikipedia.
Related to Readers: Reading glasses, Reader's Digest

reader

1. 
a. Chiefly Brit at a university, a member of staff having a position between that of a senior lecturer and a professor
b. US a teaching assistant in a faculty who grades papers, examinations, etc., on behalf of a professor
2. 
a. a book that is part of a planned series for those learning to read
b. a standard textbook, esp for foreign-language learning
3. short for lay reader
4. Judaism chiefly Brit another word for cantor

Reader

 

a device for the viewing and reading of enlarged optical images of microfilms or microphotocopies. A reader is a projector in which the image of a microfilm frame is projected, by means of an objective and a system of mirrors, on a screen that is built into the device or on an external screen. Depending on the principle of their operation, readers are divided into devices for viewing microfilms and microphotocopies in transmitted light or in reflected light. The most widely used readers are table models, which make it possible to view both microfilms and microphotocopies—for example, microcards or microfiches—on either a transparent or an opaque substrate.

According to their design, readers are divided into devices with a diffusely reflecting screen and devices with a translucent screen. The components of a reader with a diffusely reflecting screen may include a mirror attachment for projecting images on an external screen.

In a reader with a diffusely reflecting screen, light from an electric lamp passes through a heat filter and a system of lenses and falls on a microfilm frame. The optical image of the microfilm frame is projected, by means of an objective and a mirror, on a screen located within a housing that shields the screen from light. Such a housing makes it possible to use the reader in undarkened rooms.

In a reader with a translucent screen, rays of light pass through a heat filter and fall on a microfilm frame. The image of the microfilm frame is projected on the translucent screen by means of an objective and a system of mirrors.

In working with microphotocopies, it often becomes necessary to obtain an enlarged duplicate of a document. For this purpose, a reader copier is used. In such a device, a reader and a reprographic system are integrated. The first reader-copiers, which were manufactured by Kodak (USA) in the 1930’s, made copies on photographic paper. In present-day reader-copiers, enlarged copies are produced on dielectric paper or on ordinary paper by means of electrography. Work with reader-copiers is carried out in two stages. First, the required microfilm frame is retrieved on the screen; then, an enlarged copy is produced.

Readers and reader-copiers are office equipment. They are used in libraries, in the scientific and technical information departments of scientific research institutes, in design organizations, and in other organizations where the type of activity requires microfilming.

REFERENCES

See references under MICROFILMING.

A. IA. MANTSEN

reader

[′rēd·ər]
(computer science)
A device that converts information from one form to another, as from punched paper tape to magnetic tape.
(graphic arts)
A projection device for viewing an enlarged microimage with the unaided eye.

reader

A machine that captures data for the computer, such as an optical character reader, magnetic card reader and punch card reader. A microfiche or microfilm reader is a self-contained machine that reads film and displays its contents.
References in periodicals archive ?
(NASDAQ:INVE) today announced Bureau of Indian Standards (BIS) Certification on the most popular collection of the company's desktop smart card reader solutions.
To Google's credit (which still does not absolve it of its evil, evil decision), the company has made it easy for current Reader users to export all of their personal data from Reader.
While publishing contributions from readers may be a new frontier in some news rooms, happily, at most trade magazines (and particularly at Recycling Today), this is far from a radical idea.
Nonetheless, the complaints poured in from "the field": the readers were too hard; they were too different; they didn't have the worksheets that teachers expected; they didn't have the comprehension questions that teachers needed.
"What does it mean to your readers? That's the key to good newsletter journalism."
But the headline isn't the only element that draws the reader in.
The best-selling series has struck a chord with readers around the world and across cultures.
The chapters of the book form a coherent whole and together provide the reader with meaningful dialogue about the book's overall theme.
"Our content provides detailed how-to projects paired with resource guides for supplies, tools and equipment to help readers get their projects planned and executed," Crummett says.
If she expected a great deal from her readers, she asked just as much from herself.
Readers to whom locations such as the Isles and Witchworld are new will be inclined to seek out the original novels in these series for additional details of these worlds.