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)
Junk fax must follow certain guidelines, but there is no individual right to sue the senders. Information on the rules of telemarketing faxes in Canada can be found in the CRTC Unsolicited Telecommunications Rules. Individuals wishing to avoid such faxes may enroll in the CRTC's National Do Not Call List; its effectiveness, however, is a point of controversy. The Office of the Telecommunications Authority (OTA) has implemented regulations to address junk faxes. Complaints will result in disconnection of the offenders' phone service. Junk fax Junk faxes are a form of telemarketing where unsolicited advertisements are sent via fax transmission. Junk faxes are