The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1986
Filed:
Apr. 19, 1984
Joseph H Wally, Shawnee Mission, KS (US);
Opti-Copy, Inc., Lenexa, KS (US);
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.