Recording device

Abstract

Abstract PURPOSE: To prevent a secret from being leaked out by preparing two kinds of recording devices in recording devices and switching and using a form for normal and secret receiving recording. CONSTITUTION: In respect to a secret recording paper, coating layer 2 where electron giving colorless dyes is made into a microcapsule and is applied is provided on the reverse side of first upper sheet 1, and coating layer 4 where an electron receptive compound is applied is provided on the surface of second lower sheet 3. When impulse is given by an impact print head under a state where they are superposed, the microcapsule is broken, and electron giving colorless dyes reacts chemically on the electron receptive compound on the surface of the lower sheet to emit light. Next, when secret recording is required, a short special code signal is sent from the transmission side just before information transmission, and the receiving side detects this signal in 45 and switches a recording paper to the secret recording paper, and simultaneously, the ink ribbon of head 44 is removed to give only impulse. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Toshihide Kawashima
• 👤 Akio Kameoka

Bibliographic Details