发明授权
- 专利标题: Phase change ink composition employing a combination of dyes
- 专利标题(中): 使用染料组合的相变油墨组合物
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申请号: US338072申请日: 1994-11-14
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公开(公告)号: US5507864A公开(公告)日: 1996-04-16
- 发明人: C. Wayne Jaeger , Loc V. Bui , Donald R. Titterington
- 申请人: C. Wayne Jaeger , Loc V. Bui , Donald R. Titterington
- 申请人地址: OR Wilsonville
- 专利权人: Tektronix, Inc.
- 当前专利权人: Tektronix, Inc.
- 当前专利权人地址: OR Wilsonville
- 主分类号: C09D11/00
- IPC分类号: C09D11/00 ; C09D11/02 ; C09D11/12
摘要:
The present invention preferably employs a phase change ink composition that includes a combination of different dye types such as an anthraquinone dye and a xanthene dye, which is most preferably a rhodamine dye. While each dye type is insufficiently soluble with respect to favored carrier compositions to preserve color saturation in reduced ink quantity prints, the dye type combination permits increased dye loading and maintains print quality. In a preferred embodiment of the invention, a favored carrier composition is adjusted to promote the colored form of a preferred rhodamine dye (C.I. Solvent Red 49) and mixed with a preferred anthraquinone dye (C.I. Solvent Red 172) whose concentration is kept below a critical level to prevent post printed blooming. The resulting preferred phase change ink compositions provide a magenta phase change ink with enhanced light fastness and color saturation, as well as good compatibility with preferred existing subtractive primary color phase change inks.
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