| 摘要 |
Photographic elements having a support on which is coated a layer including a light-sensitive halocarbon and a 1,4-pyran derivative like 1-(p-N,N-dimethylaminophenyl)-1H-3-(p-ethoxyphenyl)naphtho[2,1-b]pyran or 4-(p-N,N-dimethylaminophenyl)-2-phenyl-4H-1-benzo[b]pyran yield printout images in exposed areas on exposure to actinic rays. The resultant printout image can be intensified by heating.
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