发明名称 Thermographic recording material with improved image density and/or image gradation upon thermal development
摘要 <p>A recording material exclusive of a thermal bleachable dye comprising a support and a thermosensitive element comprising an organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, characterized in that the recording material is exclusive further contains non-halide-ion-containing arylonium compound exclusive of compounds according to formula (I): &lt;CHEM&gt; wherein La is a valence bond or a divalent or trivalent linking group, L2 is an alkylene group, each of Ra and Rb is a hydrogen atom or monovalent substituent group, M1 is an onium ion, Ra and Rb may form a ring taken together and D is an electron donative group of atoms, with the proviso that where D is a hydrazino group which is not a part of a semicarbazido group, no oxo group is substituted to the carbon atom which is directly attached to a nitrogen atom of the hydrazine; and a recording process therefor.</p>
申请公布号 EP0921434(A1) 申请公布日期 1999.06.09
申请号 EP19980203791 申请日期 1998.11.10
申请人 AGFA-GEVAERT N.V. 发明人 HOOGMARTENS, IVAN;GEUENS, INGRID;LOCCUFIER, JOHAN
分类号 G03C1/498;(IPC1-7):G03C1/498 主分类号 G03C1/498
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