Invention Grant
- Patent Title: Thermographic recording material with improved image tone
- Patent Title (中): 具有改善图像色调的热成像记录材料
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Application No.: US10183261Application Date: 2002-06-27
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Publication No.: US06693062B2Publication Date: 2004-02-17
- Inventor: Philip Dooms , Ivan Hoogmartens , Geert Defieuw
- Applicant: Philip Dooms , Ivan Hoogmartens , Geert Defieuw
- Priority: EP01000259 20010629
- Main IPC: B41M528
- IPC: B41M528

Abstract:
A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing one or more substantially light-insensitive organic silver salts, one or more reducing agents consisting of one or more 1,2-dihydroxybenzene-compounds in thermal working relationship therewith and a binder, wherein the molar ratio of molar hydroxy-equivalents of the 1,2-dihydroxybenzene compounds to molar silver-equivalents of the substantially light-insensitive organic silver salts is between 1.2 and 6.0; the 1,2-dihydroxybenzene-compounds have a —(CH═CH)nR group in the 4 position wherein n is zero or an integer and R is a substituent with a Hammett &sgr;p constant >0.35 and
Public/Granted literature
- US20030186809A1 Thermographic recording material with improved image tone Public/Granted day:2003-10-02
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