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1.发明授权LUMINESCING INKS AND USE OF SUCH INKS IN CODING AND OTHER MARKING OPERATIONS 失效LUMINESCENT油墨和它们在代码和其他标志
公开(公告)号：EP0914392B1
公开(公告)日：2000-10-25
申请号：EP97931964.7
申请日：1997-07-18
申请人： THE POST OFFICE
发明人： BROWN, Paul, Robert , HEWISON, Simon , KONDRATOWICZ, Anna , METSON, Clive, Alan, Lionel , ROCK, John , SCOTT, Richard
IPC分类号： C09D11/00
CPC分类号： C09D11/50
摘要： Coding of items of mail is achieved to good effect irrespective of the moisture content of the mail and/or ambient relative humidity by applying to at least one part of the surface a composition comprising both phosphorescence activation means and fluorescence activation means such that exposure of the surface to ultraviolet light will lead to an emission of detectable phosphorescence to an extent which will depend upon the amount of moisture at the surface. Fluorescence will be activated irrespective of moisture content. Preferably red phosphorescence and red fluorescence are manifested.
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2.发明公开LUMINESCING INKS AND USE OF SUCH INKS IN CODING AND OTHER MARKING OPERATIONS 失效LUMINESCENT油墨和它们在代码和其他标志
公开(公告)号：EP0914392A1
公开(公告)日：1999-05-12
申请号：EP97931964.0
申请日：1997-07-18
申请人： THE POST OFFICE
发明人： BROWN, Paul, Robert , HEWISON, Simon , KONDRATOWICZ, Anna , METSON, Clive, Alan, Lionel , ROCK, John , SCOTT, Richard
IPC分类号： C09D11
CPC分类号： C09D11/50
摘要： Coding of items of mail is achieved to good effect irrespective of the moisture content of the mail and/or ambient relative humidity by applying to at least one part of the surface a composition comprising both phosphorescence activation means and fluorescence activation means such that exposure of the surface to ultraviolet light will lead to an emission of detectable phosphorescence to an extent which will depend upon the amount of moisture at the surface. Fluorescence will be activated irrespective of moisture content. Preferably red phosphorescence and red fluorescence are manifested.
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