Reciprocity failure in films of flash exposed dichromate sensitized polyvinyl alcohol
作者:
A. G. Leiga,
R. A. Walder,
期刊:
Polymer Engineering&Science
(WILEY Available online 1969)
卷期:
Volume 9,
issue 1
页码: 35-39
ISSN:0032-3888
年代: 1969
DOI:10.1002/pen.760090106
出版商: Society of Plastics Engineers, Inc.
数据来源: WILEY
摘要:
AbstractThe validity of the Busen‐Roscoe reciprocity law in flash exposed dichromate sensitized polyvinyl alcohol (PVA) films was investigated. It was found that the flashlamp operating conditions were an important parameter in an exposure system, since a spectral distribution shift of the lamp output could be obtained by changing the pulse duration from 0.3 to 2.0 msec. The apparent reciprocity failure obtained by varying the pulse duration while maintaining the energy stored in the capacitor bank fixed was consistent with the spectral distribution shift in the lamp output. When this shift was accounted for there was only a negligible reciprocity failure found over the range of these flash exposures; however, comparison with a steady mercury are lamp showed that the flash exposure cross‐linked the PVA about 200 times more efficien
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