safelight


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safelight

(sāf′līt)
A darkroom device that emits a light of a specified wavelength that causes less fogging of undeveloped film than white light does.

safe·light

(sāflīt)
Illumination permitted in a darkroom during processing.
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Under safelight conditions, place the "negative" directly on top of a piece of black-and-white enlarging paper.
The second source of film fog was incorrect safelight illumination.
Without the safelight on, we cannot see through the windows enough to see where to do the dodging or burning in.
10 July 2014 - US software security assessment and training company Security Innovation Inc said today it had acquired domestic information security and developer training specialist Safelight Security for an undisclosed amount.
M2 EQUITYBITES-July 10, 2014-Security Innovation buys Safelight Security
You'll also need scissors, photographic paper, clear Plexiglas" or heavy glass, processing chemicals in trays, a darkened room with a safelight and a sink, and a light source (an enlarger, perhaps).
Sometimes the problem can be corrected by the mammographer or QC technologist, as when there is a light leak in the safelight, but more often the processor service provider must be called.
The violet-laser Polaris lowers operating cost and images Agfa's Lithostar Ultra-V or any other violet- sensitive laser-imaged plate in convenient yellow safelight. Sublima technology combines frequency-modulated stochastic screening with Agfa Balanced Screening to achieve continuous-tone quality for high-speed printing on newsprint at 85- to 100-line screens.
In the early days of radiography which manual "wet tank" processing, the operator could salvage an overexposed film by "sight developing." The film was viewed through the darkroom safelight to determine the density level.