Complexing residual photosensitive polyhalogen compound with the tertiary amine
AssigneeAgfa-Gevaert
InventorsHugo Vital Van Goethem, Edwin Hendrik Hazenbosch, Albert Lucien Poot
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Abstract
A recording process including image stabilization comprising the steps of: 1. image-wise exposing to active radiation of a recording material containing in a recording layer a photosensitive polyhalogen compound capable of producing photoradicals when exposed with ultraviolet radiation, and 2. transforming the non-decomposed polyhalogen compound into a non-photosensitive substance in an element or body separate or separable from the recording layer by reaction with an aliphatic or cyclo-aliphatic tertiary amine.
Claims19
In a recording process comprising the step of image-wise exposing to an activating radiation image a recording layer containing:
- a. a polyhalogen hydrocarbon compound releasing free radicals by photolytically decomposition when exposed to activating radiation, and
- b. A dye precursor compound reactive upon contact with said free radicals released in the exposed areas of said layer to produce a colored dye image,
- the improvement of stabilizing the unexposed regions of said layer by the steps of:
- removing residual undecomposed polyhalogen compound from said layer and contacting the removed polyhalogen compound with a cycloaliphatic tertiary amine reactive with said polyhalogen compound to form a solid non-light-sensitive complex.
A recording material comprising a recording layer containing:
- a. a polyhalogen hydrocarbon compound releasing free radicals by photolytically decomposition when exposed to activating radiation, and
- b. a dye precursor compound reactive upon contact with said free radicals released in the exposed areas of said layer to produce a colored dye image,
- in sandwich relation with said recording layer a stabilizing layer containing a cycloaliphatic tertiary amine reactive with said polyhalogen compound to form a solid non-lightsensitive complex, whereby residual polyhalogen compound in said layer after exposure thereof to said activating radiation is transferable to said stabilizing layer by heating to volatilize said residual compound.
Dependencies are inferred from the claim text.