Xerox Machine

Xerox Machine:

Xerox Machine, also known as photocopier, copier or copy machine is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply. Most modern photocopiers use a technology called xerography. This is a dry process that uses electrostatic charges on a light-sensitive photoreceptor to first attract and then transfer toner particles (a powder) onto paper in the form of an image. Heat, pressure or a combination of both is then used to fuse the toner onto the paper.
Other technologies such as ink jet can also be used to make the photocopy. But xerography is standard for office copying. Photocopying is widely used in the business, education, and government sectors.

Color Xerox Machine:

When you start with a sheet of paper with something printed or written on it, scan it into a printer, and then print out one or more copies is called as color copying. By color mixing using toner (ink) of just 3 colors: cyan, magenta, and yellow any color image can be reproduced. Color photocopying is a concern to governments, as it facilitates counterfeiting currency and other documents.

Digital Xerox Machine:

The copier consists of an integrated scanner and laser printer with digital copying. This design has several advantages, such as automatic image quality enhancement and the ability to "build jobs". That is, to scan page images independently of the process of printing them. Some digital copiers can function as high-speed scanners. Such models typically offer the ability to send documents via email or to make them available on file servers.  Automatic digital collation is another added advantage of digital copier technology. For example, when copying a set of 20 pages 20 times, a digital copier scans each page only once, then uses the stored information to produce 20 sets.

Advantages of Xerox Machine:

Advantages of photocopiers include:

•     to use plain (untreated) office paper
•     to implement duplex (or two-sided) printing
•     to scan several pages automatically with an ADF
•     to sort and/or staple output.

Health Issues:

Documents are exposed to some ultraviolets , as copiers with ultraviolet produces lights such as fluorescent, tungsten halogen, or xenon flash.  Because  glass transmits ultraviolet rays between 325 and 400 nanometers, exposure to ultraviolet light is a concern   .