Black fax to harass large institutions or government departments, to retaliate against the senders of junk faxes, or merely as simple pranks. The basic principle of a black fax can be extended to form a "black fax attack." In this case, one or more sheets are fed halfway through the sender's fax machine and taped end to end, forming an endless loop that cycles through the machine. Not only can solid black be used, but also images which will repeat endlessly on the receiver's machine until its toner runs out. The introduction of computer-based facsimile systems (combined with integrated document imaging solutions)
Fax modem where standard features allow users to send a fax by using the fax phone number as the address of a E-mail message, and receive incoming faxes via E-mail with the Fax content presented as a PDF attachment. Medical systems continue to use this technology into the 21st century, but many home and business users dropped the use of fax modems in favor of high speed internet. Fax modem A fax modem enables a computer to transmit and receive documents as faxes on a telephone line. A fax modem is like a data modem but is designed to transmit and receive