Radiation imagery chemistry: process – composition – or product th – Thermographic process – Heat applied after imaging
Patent
1996-10-09
1998-09-01
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Thermographic process
Heat applied after imaging
430203, G03C 516
Patent
active
058009680
ABSTRACT:
Provided are a method for heat developing a photosensitive material comprising the steps of heating the surface of the photosensitive material at a first temperature at which decarboxylation and release of a base by decomposition of a base precursor proceed, the surface being exposed to an atmosphere in a non-contact state, and then heating the photosensitive material at a second temperature which a hardening reaction proceeds at and is higher than the first temperature; and an apparatus comprising a non-contact heating section for heating the photosensitive material in the non-contact state at the first temperature and a contact heating section for heating the photosensitive material in a contact state at the second temperature. The method and apparatus efficiently liberate from the photosensitive material carbonic acid gas generated by decomposition of the base precursor to make smooth progress of the heat development reaction possible.
REFERENCES:
patent: 4985339 (1991-01-01), Koizumi et al.
patent: 5122443 (1992-06-01), Takeda
patent: 5290659 (1994-03-01), Takeda
Chea Thorl
Fuji Photo Film Co. , Ltd.
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