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1. 发明申请

WO2009157990A1 INKJET PRINTING SYSTEM 审中-公开
标题翻译：喷墨打印系统
公开(公告)号：WO2009157990A1
公开(公告)日：2009-12-30
申请号：PCT/US2009/003727
申请日：2009-06-23
申请人： EASTMAN KODAK COMPANY , HIGGINS, John, Martin , CLARKE, Andrew , DESROUSSEAUX, Stephanie, Veronique , HOWE, Andrew Michael , GIBSON, Danuta , WEAR, Trevor John
发明人： HIGGINS, John, Martin , CLARKE, Andrew , DESROUSSEAUX, Stephanie, Veronique , HOWE, Andrew Michael , GIBSON, Danuta , WEAR, Trevor John
IPC分类号： B41J11/00
CPC分类号： B41J11/0015
摘要： The present invention relates to an inkjet printing system comprising (a) at least one inkjet printing unit each comprising at least one inkjet printhead; (b) an ink-receiving element comprising a substrate; (c) an aqueous inkjet ink composition which comprises a polymeric compound comprising discrete particles responsive to a stimulated temperature change, and a functional material, wherein the functional material may be incorporated as part of the polymeric particles, the particles causing the composition to have a first rheological state and a different second rheological state in response to the stimulated change in temperature, the first rheological state being associated with a first lower viscosity of the composition, wherein the particles have a first lower volume, enabling the composition to pass through an inkjet printhead orifice and the second rheological state being associated with a second higher viscosity of the composition, wherein the particles have a second higher volume, enabling immobilisation of droplets of the composition on a substrate therefor; and (d) means for cooling the substrate prior to or during ink deposition, such that upon contact with the substrate the ink composition undergoes a change in rheological state from the first to the second rheological state enabling immobilisation of droplets of the ink composition on the substrate. The inkjet system is particularly suitable for a continuous inkjet printing system for printing onto a wide range of surfaces including impermeable surfaces, such as polyethylene or propylene, rubber, aluminium or steel as normally used in packaging and poorly-absorbing papers, such as lithographic papers. By cooling the substrate prior to or during ink deposition, the temperature of the substrate can be selected such that the ink can adopt its second, higher viscosity, rather than the prevailing, variable, ambient conditions.
摘要翻译：本发明涉及一种喷墨打印系统，其包括（a）至少一个喷墨打印单元，每个喷墨打印单元包括至少一个喷墨打印头; （b）一种包含基底的油墨接收元件; （c）水性喷墨油墨组合物，其包含包含响应于受刺激的温度变化的离散颗粒的聚合化合物和功能材料，其中所述功能材料可以作为所述聚合物颗粒的一部分结合，所述颗粒使所述组合物具有第一流变状态和不同的第二流变状态响应于受激化的温度变化，第一流变状态与组合物的第一较低粘度相关联，其中所述颗粒具有第一较低体积，使组合物能够通过喷墨打印头孔口和第二流变状态与组合物的第二较高粘度相关联，其中所述颗粒具有第二较高的体积，使组合物液滴能够固定在基材上; 和（d）在油墨沉积之前或期间冷却基材的装置，使得当与基材接触时，油墨组合物经历从第一流变状态到第二流变状态的流变状态的变化，从而使油墨组合物的液滴能够固定在基质。喷墨系统特别适用于连续喷墨印刷系统，用于在通常用于包装和不良吸收的纸张如平版印刷纸中的通常使用的诸如聚乙烯或丙烯，橡胶，铝或钢的不透水表面的宽范围的表面上印刷。通过在油墨沉积之前或期间冷却基板，可以选择基板的温度，使得油墨可以采用其第二，较高粘度而不是主要的，可变的环境条件。

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