发明名称 |
Black ink for ink-jet recording |
摘要 |
<p>A black ink for inkjet recording comprises a dye dissolved and/or dispersed in an aqueous medium. The dye has a lambda max of 500-700 nm and a half value width of >= 100 nm in an absorption spectrum of a dilute solution normalized to an absorbance of 1.0. The black ink has a transition metal ion content of = 0.1 mmol/l; and a forced fading rate constant k v i s of = 5.0 x 10 -> 2> [hour -1>]. Black ink for inkjet recording comprises a dye dissolved and/or dispersed in an aqueous medium. The dye has a lambda max of 500-700 nm and a half value width of >= 100 nm in an absorption spectrum of a dilute solution normalized to an absorbance of 1.0. The black ink has a transition metal ion content of = 0.1 mmol/l; and a forced fading rate constant k v i s of = 5.0 x 10 -> 2> [hour -1>]. The forced fading rate constant is decided by printing a black square symbol of JIS code 2223 in 48-point using the black ink, measuring the reflection density D v i s of the printed symbol through a status A filter to obtain an initial density, forcedly fading the printed symbol by an ozone fading tester capable of continuously generating 5 ppm of ozone, and determining the time taken until the reflection density reaches 80% of the initial density.</p> |
申请公布号 |
EP1403338(B1) |
申请公布日期 |
2008.03.26 |
申请号 |
EP20030022138 |
申请日期 |
2003.09.30 |
申请人 |
FUJIFILM CORPORATION |
发明人 |
TAGUCHI, TOSHIKI;WACHI, NAOTAKA |
分类号 |
B41J2/01;B41M5/00;C09B31/147;C09B31/153;C09D11/00;C09D11/328;C09D11/40 |
主分类号 |
B41J2/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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