A photocopier or Xerox machine is an electronic device that can produce facemail copy of a document or images on a printing object. The commercialization of Xerox has created phenomenal benefits in document copying and is a boon to all classes of people. The printed medium may be of multiple kinds such as paper, plastic film or any other material on which impression required to be made for documentation or any other purposes. Commercial Xerox or office photocopying process was introduced by the company, Xerox in 1959, and gradually replaced copies made by earlier obsolete technologies like Verifax, Photostat, carbon paper stenciling, mimeograph machines, and machines.
Which Are Those Areas Where Photocopiers Are Used on An Extensive Scale?
Photocopiers are extensively used in offices, presses, legal documentation in courts and a lot of multipurpose usages. Photocopier has become an essential machine nowadays as it can produce a copy of documents of any color quickly and at a cheaper rate.
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How Do Modern Photocopiers Work?
Most modern photocopiers use a technology called xerography. This is a dry process that uses electrostatic charges on a light-sensitive photoreceptor. The receptor is first attracted by the electrodes and then transfer toner particles in the form of a powder onto paper in the form of an image. Heat, pressure or a combination of both is then applied to fuse and adhere the toner onto the paper. Other technologies like inkjet are also used particularly for printing design drawings, but xerography is a standard process for office copying.
The Process of Copying
When a document is xeroxed, extraction of important information from documents needs to be transferred to the medium of the copy, generally paper. To meet this objective, simply extracting individual characters is not sufficient. To solve this purpose, a document analysis technology has been developed which make it possible for automatic extraction of the structured information of electronic documents to convert from paper documents, as well as electronic documents by means of creation of various applications.
What Is the Technology Behind the Working of a Photocopier?
- After pre-processing, that consists of skew correction, resolution conversion etc., is performed on a document image, the image analysis system analyses the characteristics of the image by means of area analysis to identify such area attributes in the form of text, pictures, tables, and figures which are the contents of the document to be copied.
- In the text and table dominated areas, individual text areas are located based on the result of analyzing the arrangement of character relating interlocking, and then on the nature of the presentation of the text viz. vertically or horizontally. In addition, processing is also required to isolate the text from ruled lines. Contour correction for the text and lines are carried out perfectly.
- Subsequently, optical character recognition, OCR is done, followed by the text areas and tables being interrelated with character codes. At the same time, the code analysis system interprets the code information of characters that constitute the document. Photocopying has a wide range of usage starting from business, education, and government sectors.
- Now, to make official works easier, companies also buy photocopiers cum scanners with high resolution printing technology as an associated feature to add to mass-scale production in a company.
Globally there is a tendency for adopting paperless documentation. This can be achieved by documentation in soft copies in computer memory. Even then the usage of photocopiers is in huge demand worldwide. For diverse purposes photocopiers role in market is integral and no matter how much you depend on internet, the business of photocopying will dwell for years to come.
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