Apparatus for creating copy restrictive media

Details Apparatus for creating copy restrictive media Apparatus for creating copy restrictive media

1997-04-30

1998-06-16

Brase, Sandra L.

Electrophotography

Document handling

Original

283902, G03G 2104

Patent

active

057686742

ABSTRACT:
An apparatus for creating copy restrictive media is disclosed comprising a linear array (20) comprised of at least two spatially distributed light sources (22) and an aperture mask (28) for forming two or more micro-light sources from the light sources (22). An optical element (32) focuses light from the micro-light sources onto a media (40) moving relative to the linear array (20). An encoder (16) turns the light sources (22) on and off at regular intervals relating to movement of the media (40).

REFERENCES:
patent: 3852088 (1974-12-01), Godlewski et al.
patent: 4351547 (1982-09-01), Brooks, II
patent: 4678322 (1987-07-01), Finkel et al.
patent: 4791449 (1988-12-01), Foley et al.
patent: 5087507 (1992-02-01), Heinzer
patent: 5375886 (1994-12-01), Tsuchiya
patent: 5444779 (1995-08-01), Daniele
patent: 5647010 (1997-07-01), Okubo et al.

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