发明名称 HEAT-SENSITIVE MULTI-COLOR DISCOLORATION STATIONERY
摘要 <P>PROBLEM TO BE SOLVED: To provide a stationery which makes the reverse color changes between a plurality of colors visually discriminable by a simple means by a hand touch or rubbing, and which is rich in variations of the color change, and has a high commodity value. <P>SOLUTION: A thermal discoloring layer containing reversible thermal discoloring pigments A and B is installed. The pigments A and B are a pigment which envelopes a reversible thermal discoloring composition in a micro-capsule. In this case, the reversible thermal discoloring composition starts coloring when the temperature has reached a coloring starting temperature (t<SB>2</SB>) in a temperature descending process from a colorless state in a temperature-color density curve, and becomes a completely colored state when the temperature has reached a complete coloring temperature (t<SB>1</SB>). Also, the reversible thermal discoloring composition starts fading when the temperature has reached a fading starting temperature (t<SB>3</SB>) in a temperature ascending process from the colored state, and becomes a completely colorless state when the temperature has reached a complete colorless temperature (t<SB>4</SB>). In this case, t<SB>1A</SB>and t<SB>4A</SB>of the pigment A and t<SB>1B</SB>and t<SB>4B</SB>of the pigment B satisfy equations (1) to (4). The equation (1) is 28(&deg;C)&le;t<SB>4A</SB>&le;36(&deg;C), the equation (2) is t<SB>4A</SB>+2(&deg;C)&le;t<SB>4B</SB>&le;t<SB>4A</SB>+25(&deg;C), the equation (3) is 10(&deg;C)&le;t<SB>1A</SB>&le;33(&deg;C), and the equation (4) is 10(&deg;C)&le;t<SB>1B</SB>&le;40(&deg;C). <P>COPYRIGHT: (C)2008,JPO&INPIT
申请公布号 JP2008126562(A) 申请公布日期 2008.06.05
申请号 JP20060315573 申请日期 2006.11.22
申请人 PILOT INK CO LTD 发明人 ONO YOSHIAKI
分类号 B43K3/00;B42D9/00;B42D9/04;B42D15/00;B43K19/02;B43K23/04;B43K23/08;B43L3/00;B43L7/00;B43L19/00;B43L21/00;B43L23/00;B43L25/00;B43M9/00;B43M11/00;B43M15/00;B43M99/00 主分类号 B43K3/00
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