The conservation of both continuous tone and textual images is discussed with regard to the following sources: photographic from silver halide technology, electrostatic, magnetic, optical disk, vesicular, thermal, and ink-jet.
The preservation of these images requires consideration of (a) measurement and prediction of the rate of degradation, (b) mechanisms of degradation, and (c) optimization of storage conditions. Philosophy and methods of restoration of degraded images are presented. There are special difficulties with machine-readable images, such as those stored on optical disks and magnetic media-a major problem being maintenance of the play-back equipment.
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