Photoreproduction apparatus with pulsed light projector source

Details Photoreproduction apparatus with pulsed light projector source Photoreproduction apparatus with pulsed light projector source

1984-04-19

1986-04-15

Haroian, Harry N.

Optics: image projectors

Temperature control

Blower

353 55, 353 61, G03B 2116

Patent

active

045824061

ABSTRACT:
An image projector has a pulsed or similar light source of high intensity and high heat emission housed in an opaque box having a light-diffusing glass panel in its forward side which is spaced behind a vacuum film-holding plate having a glass center. Between the box light and the film-holding plate is a compartment which is open on the front and back and is sandwiched between the light diffusing glass panel of the box light and the film-holding plate such that no light escapes into the room. Said compartment thus comprises an isolation chamber which passes light to the film but not heat. The box light and the isolation chamber each has its own blower system and independent, specially baffled vents such that air between the two does not intermix. The vents are so designed as to permit discharge of the air but inhibit the egress of light therethrough.

REFERENCES:
patent: 2880647 (1959-04-01), Swinnerton
patent: 4453810 (1984-06-01), Curie

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