FACSIMILE MACHINE (FAX)

Facsimile or commonly known as fax, derived from the word 'fac simile' (make-similar) in Latin, which means making a copy of the same to the original. In other areas, the fax machine can also be called a telecopier. Fax machine is a communications device that is used to transmit a document by using a device that is capable of operating over the telephone network with results similar to the original.

While According A.G. Pringgodigdo, fax machine is a wireless transmission system for drawings and graphics by regulating the beam of light and the photoelectric cell and change the lightest and darkest parts of a material that can be emitted in the sound, then the receiver will turn back as the original to the paper which has been scientifically processed. In addition to submitting the document, the fax machine is also capable of delivering the image of half tone images with the facility. Fax machine usually consists of a modem, copier, scanner images, and the data display devices (printers).

work process

The process begins with a working fax machine imperative that the receiver and the sender must have a fax machine. Sender will insert the document to be sent to the fax machine feeder and then dialing the destination fax machine. When the connection has occurred with the receiving fax machine, the fax machine will scan by reading a very small area on the document. The fax machine will turn it into an electrical signal to then translate the area that is read as a dark or bright areas with mark "0" to the dark and "1" for light. The electrical signals are then transmitted over a telephone line and to the receiving fax machine. The receiving machine then capture and interpret electrical signals to create a document that is exactly the same as the original, and then print it.

fax paper

In print documents via fax machines, use special paper that is heat sensitive paper thermal (heat-sensitive thermal). Thermal paper is paper that is filled with chemicals that will change color when heated. This paper used in thermal printer. Surfaces coated thermal paper dye mixture of solid and appropriate content, such as fluoran leuco dye and octadecylphosphonic acids. Thermal paper containing bisphenol A concentrations high enough, ie material endocrine solver.

For precaution, in the business world, thermal paper fax machine can not be recognized as tangible evidence in legal statute, unless it has been copied in advance. This occurs because the ink used on fax paper easily fade, especially if stored for a long time. In addition, the paper also easily rolled and faded images or writings vulnerable if exposed to sunlight.

ability

There are several different indicators to measure the ability of the fax machine is through group (group), class (class), the speed of data transmission (data transmission rate), and conformance with ITU-T. fax machines typically use a standard PSTN connection and phone number. The main reason is that the success of the fax machine every country in the world using the same standard, that group 3. The experts believe that the third group has the potential to continue to progress and improvements in the future. Group 4 engine, which works four times faster, has been available but can only work on the digital telephone exchange system.

classification transmission

Fax machine in constant development, especially in terms of improvement of transmission speed. This happens because the larger the transmission speed, the sooner the document can be terkirimkan. Determination of such transmission is done by the regulatory body equipment standard fax machine or ITU-T. fax machine production rate based on the classification of the transmission time duration, namely:

• Group I (G1): transmission time of 6 minutes

• Group II (G2): transmission time 3 minutes

• Group III (G3): transmission time of less than 1 meni

• Group IV (G4): transmission time of 10 seconds

Selection mode

In submitting a document, a fax machine provides three mode options, namely:

• Standard Mode. This mode is the fastest way to send a document that also means more efficient pulse. But the quality of the delivery is sometimes less good. Especially if the document is not the original or copy of the results.

• Mode fine. In this mode of delivery results better resolution but requires a longer transmission time anyway.

• Superfine mode. This mode is able to produce good results in the submission of the two previous modes, which will be very useful for the delivery of a very important document. But the time taken in shipping is also much slower.

Advantages and disadvantages

Fax machine helps the delivery of a document to a distant place in a short time. When sending a document to a distant place, the fax machine will send faster and spontaneous outperformed the mailing by post. However deficiencies in the quality of the fax machine has been lowered into position under electronic mail or email as a form of electronic document transfer tool which has been widespread and used a lot of people.

reference

https://id.wikipedia.org/wiki/Faksimile