How does a fax machine work? What is a fax machine for?

It's not about how it works, right? Do you mean how it works?

A fax machine is a device that can convert paper documents into electronic signals and transmit them to a remote receiver through a ** line.

Fax machines can be used to transmit various types of documents, including text, images, and other types of files. The main function of the fax machine is to quickly transfer documents between different locations, avoiding the time and cost of mailing or courier.

Fax machines are widely used in commercial, medical, and other fields, especially in occasions where documents need to be transmitted quickly, such as signing contracts, transmitting orders, and delivering medical reports. With the development of the Internet, the use of fax machines has gradually decreased, but it still has a certain importance in some specific occasions.

The purpose of the fax machine is as follows:

1. The fax machine is a communication equipment that uses scanning and photoelectric conversion technology to convert documents, drawings and tables, and other static images into electrical signals, transmit them to the receiving end, and copy them in the form of records.

2. The ordinary fax machine has the function of faxing, which can transmit the text, **, etc., to the other party quickly through the fax machine, and also has the function of copying.

3. In addition to sending and receiving fax and copying functions, the standard fax machine generally has Chinese and English LCD display, automatic paper cutting, automatic paper feeding, paperless reception, call forwarding, caller ID, computer interface (external) and other functions.

4. The multi-functional fax machine is a set of fax machine, printer, photocopier, in addition to the function of fax, but also has the function of scanning, copying, printing, printing to fax outside the silver key, but also added the recording **, call forwarding, automatic recording of caller numbers, paper documents into paperless documents and other functions.

Introduction: Fax machine is a communication equipment that uses scanning and photoelectric conversion technology to convert documents, charts, ** and other static images into electrical signals, transmit them to the receiving end, and copy them in the form of records.

The fax machine decomposes the original to be sent into many tiny units (called pixels) through an optical scanning system in a specified order, and then converts the brightness information of these tiny cells into electrical signals by the photoelectric conversion device in sequence, and sends them to the channel after amplification, encoding or modulation. After the receiver amplifies, decodes or demodulates the received signal, it copies a copy of the original in record form at the same scanning speed and sequence as the transmitter. Fax machines can be divided into black and white fax machines and color fax machines according to their transmission colors.

According to the occupied frequency band, it can be divided into narrowband fax machine (occupying one phone frequency band) and broadband fax machine (occupying 12 channels, 60 channels or wider frequency band). Document fax machines that occupy 1 channel can be divided into the following categories according to different transmission speeds and modulation methods:

Bilateral band modulation technology is adopted, and the transmission speed of each page (16 open) is about 6 minutes, which is called a class of machines;

Using frequency band compression technology, the transmission speed of each page is about 3 minutes, which is called a second-class machine;

The digital processing technology that reduces the redundancy of the source, and the transmission speed of each page is about 1 minute, which is called the three types of machines;

Fax machines that can be connected to the computer network, can store information, and have a transmission speed close to real-time are designated as four types of machines. According to the use, it can be divided into meteorological map fax machine, photo fax machine, document fax machine, newspaper fax machine, etc. The recording methods are mostly electrolysis, electromagnetic, cautery, photography, heat sensing and electrostatic recording.