The fax machine allows for the transmission of scanned printed materials via telephone lines to another fax machine or device. It was invented in 1843 by Alexander Bain in Scotland. The fax works by scanning an original document, converting it to a bitmap that is transmitted through phone signals, then decoded and printed out by the receiving fax machine. A fax combines a scanner, modem, and printer. While faxes were convenient for paperless transmission, they are being replaced by email and online document sharing through the internet.

1. THE FAX

2. Fax
Fax is the telephonic
transmission of scanned
printed material, normally
to a telephone number
connected to a printer or
to another device of exit.

3. History
• Inventor: Alexander Bain
• Origin: Scottish
• Year: 1843

4. Other predecessors
Frederick Bakewell
• Improvements in Bain's design
• Created a machine of fax
Shelford Bidwell
• Scanning phototelegraph
Richard H. Ranger
• Created the Photo-radiogram
Xerox Corporation
• First version of the modern
machine of fax

5. How does it work?
1. The original document is scanned by a
machine of fax.
2. The information turns into a bitmap that is
transmitted by telephonic signs.
3. The fax recipient re-codifies the bitmap.
4. It pastes the information in a paper and
print it

6. Parts of the fax
• A fax is essentially a combination
of: :
A scanner of images
A modem
A printer

7. Advantages and disadvantages
Advantages Disadvantages
Documents can be stored on the hard disk. It is being overcome by the Internet
The documents can export to graphical formats
standard and be sent by e-mail.
Needs a line of telephone
Documents are printed from a publisher of text. You have to pay for this service
Saving paper It’s Limited
It saves time and shortens distances

8. Curiosities
• From the journalism to the business
• Japan is the country that more has
developed the fax
• The fax is older than the telephone
• The fax was invented in a time where the
majority of persons were walking in
wagons.