| 摘要 |
The form consumption and manufacturing cost of a facsimile communication system which can maintain secrecy by connection exclusively used facsimile device (SFX) loaded with rolled double paper that can maintain secrecy to a public communication line are reduced. A plurality of transmitter-receivers are connected to each other through the public communication line and the rolled double paper which has a visible area for address on the left or right side and can maintain secrecy is used for the receivers. The secrecy of facsimile communication is maintained by reproducing or recording the address of the communication in the visible area and a secret document in an invisible area and cutting the receiving form at an arbitrary position. |
