Self-contained device for recording data encoded either in visib

Details Self-contained device for recording data encoded either in visib Self-contained device for recording data encoded either in visib

1998-05-01

1999-11-30

Mathews, Alan A.

Photocopying

Projection printing and copying cameras

Copying sound record

355 40, 396312, 360 2, 40455, 347 98, G03B 2900, G11B 708

Patent

active

059951931

ABSTRACT:
A self-contained device for recording data encoded either in visible or invisible form or both on a medium, and for playback of data encoded either in visible or invisible form or both on the medium, the device comprises a case for forming a self-contained housing for the device; a recording portion for recording either or both visible and invisible ink on the medium, or recording either or both visible and invisible dye; and a detecting portion for detecting either or both visible and invisible ink, or detecting either or both visible and invisible dye.

REFERENCES:
patent: 3474194 (1969-10-01), Lees et al.
patent: 3970803 (1976-07-01), Kinzie et al.
patent: 4570250 (1986-02-01), Gabritsos et al.
patent: 4905029 (1990-02-01), Kelley
patent: 5276472 (1994-01-01), Bell et al.
patent: 5313235 (1994-05-01), Inoue et al.
patent: 5547501 (1996-08-01), Maruyama et al.
patent: 5771051 (1998-06-01), Guenther et al.
patent: 5815174 (1998-09-01), Stone

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