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Xenon short-arc lamp: Difference between revisions
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[[Film damage|Embossing]] is a permanent deformation that occurs when prints are projected with high intensity lamps and without proper heat absorbers. The excessive heat expands the picture area, and the frame stands out in relief. | [[Film damage|Embossing]] is a permanent deformation that occurs when prints are projected with high intensity lamps and without proper heat absorbers. The excessive heat expands the picture area, and the frame stands out in relief. | ||
Always have lamphouse dowser closed before striking a lamp -- striking a lamp when the motor is off and the dowser open can result in the following: melted shutter blades, changeover plates, cracked heat filter glass (if installed), melted film, or cracked lenses. Some projectors have a fire dowser that only opens when the motor starts, but some do not. | |||
==Aging== | ==Aging== | ||