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)
Registered fax Registered fax The technical process called as a whole hereinafter "registered fax" (« fax recommandé » in French) consists in sending an electronic document by fax where both the content is certified and the delivery to the recipient is guaranteed. <br> It serves the purpose of creating legal evidence that unalterable information has been shared between the sender and the receiver of the registered fax. The functional principle is as follows: - After the document to be sent is converted into a multiple page image in fax format, this image is time stamped.<br> - A final page is added to