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    Method for reducing cavitation in impulse ink jet printing device
    3.
    发明授权
    Method for reducing cavitation in impulse ink jet printing device 有权
    脉冲喷墨打印装置中减少气蚀的方法

    公开(公告)号：US06439709B1

    公开(公告)日：2002-08-27

    申请号：US09328652

    申请日：1999-06-09

    申请人： Deverakonda S. Sarma ,  James E. Fox ,  Alan L. Hudd ,  Thyagaraja Sarada ,  Brian Salisbury

    发明人： Deverakonda S. Sarma ,  James E. Fox ,  Alan L. Hudd ,  Thyagaraja Sarada ,  Brian Salisbury

    IPC分类号： G01D1100

    CPC分类号： B41J2/04581 ,  B41J2/04588 ,  B41J2/055 ,  C09D11/324 ,  C09D11/36 ,  C09D11/38

    摘要： Methods for reducing cavitation in impulse or drop on demand ink jetting devices are provided. Impulse ink jet compositions comprising antioxidant are also provided which are suitable for printing clear, well-defined alphanumeric text or low spread, narrow bar width bar codes on porous substrates such as Kraft paper or corrugated cardboard. The ink compositions preferably comprise from about 20 to 50 percent by weight of a carbon black dispersion, from about 10 to 20 percent by weight of a dispersion medium, from about 40 to 60 percent by weight of a plasticizer and less than 2% of an antioxidant additive. The antioxidant additive lowers the dissolve oxygen level in the ink, thereby enhancing the jetting perfomance of the printhead.

    摘要翻译： 提供了一种用于减少脉冲空穴或按需喷墨设备的方法。 还提供了包含抗氧化剂的脉冲喷墨组合物，其适用于在诸如牛皮纸或瓦楞纸板的多孔基材上印刷清晰，明确的字母数字文本或低扩展，窄条宽条形码。 油墨组合物优选包含约20至50重量％的炭黑分散体，约10至20重量％的分散介质，约40至60重量％的增塑剂和小于2重量％的 抗氧化添加剂。 抗氧化添加剂降低油墨中的溶解氧水平，从而提高打印头的喷射性能。

    High resolution pigment ink for impulse ink jet printing
    4.
    发明授权
    High resolution pigment ink for impulse ink jet printing 有权
    用于脉冲喷墨打印的高分辨率颜料墨水

    公开(公告)号：US06391943B2

    公开(公告)日：2002-05-21

    申请号：US09328860

    申请日：1999-06-09

    申请人： Deverakonda S. Sarma ,  Brian Salisbury ,  Tyagaraja Sarada

    发明人： Deverakonda S. Sarma ,  Brian Salisbury ,  Tyagaraja Sarada

    IPC分类号： C09D1110

    CPC分类号： C09D11/324 ,  C09D11/36

    摘要： Impulse ink jet compositions are provided which are suitable for printing clear, well-defined alphanumeric text or low spread, narrow bar width bar codes on porous substrates such as Kraft paper or corrugated cardboard. In one embodiment, the ink compositions preferably comprise from about 20 to 50 percent by weight of a carbon black dispersion, from about 10 to 20 percent by weight of a dispersion medium, from about 40 to 60 percent by weight of a plasticizer and optionally an antioxidant additive. The antioxidant additive lowers the dissolved oxygen level in the ink, thereby enhancing the jetting performance of the printhead.

    摘要翻译： 提供脉冲喷墨组合物，其适用于在诸如牛皮纸或瓦楞纸板的多孔基材上印刷清晰，明确的字母数字文本或低扩展窄条宽条形码。 在一个实施方案中，油墨组合物优选包含约20至50重量％的炭黑分散体，约10至20重量％的分散介质，约40至60重量％的增塑剂和任选的 抗氧化添加剂。 抗氧化剂添加剂降低油墨中的溶解氧水平，从而提高打印头的喷射性能。