Patent ID: 7807111

Claim:
A triggering unit for activating a film having an oxygen scavenging composition comprising: a UV light source disposed in a UV chamber, wherein the UV light source comprises a lamp cassette having a proximal end a distal end, opposing first and second panels defining an interior space therebetween, and a plurality of UV lamps disposed in said interior space between said first and second panels, said first and second panels each having an opening through which UV light is transmittable; a series of guide rolls disposed in said UV chamber and defining a film pathway for directing the film in close proximity with the openings in each of the first and second panels so that the film is in close proximity to the UV light source; and a UV shade disposed between the UV light source and the film pathway for blocking the film from exposure to UV light, the UV shade being moveable between the proximal and distal end of the lamp cassette, between open, partially open, and closed positions so as to control the dosage of UV light to which the film is exposed by adjusting the degree to which the UV shade is open.