An investigation into the effects of solvent content on the image quality and stability of ink jet digital prints under varied storage conditions.

越来越多的画廊、博物馆和档案馆正在将喷墨打印材料纳入他们的收藏，因此也在展示。有证据表明，这些指纹的不稳定性会导致图像质量恶化，在极端情况下，可能会在很长一段时间内丢失信息。这比其他纸质艺术品发生明显变质所需的时间要短。影响指纹图像稳定性的因素有很多，其中一些已经被研究过了。然而，溶剂在图像质量损失中所起的作用还有待探索。这项研究将调查在一定温度和湿度条件下储存或展示时，可能增加/促进硬拷贝打印图像质量损失的溶剂含量的影响。在广泛的文献调查的基础上，将对一系列当代喷墨打印材料进行基于实验室的研究。选定的材料将包括所有类型的喷墨系统，这些喷墨系统在可膨胀和不可膨胀的衬底上使用彩色墨水，包括美术数码打印纸。样品将经过各种规定的处理，以减少或去除溶剂含量。溶剂去除的程度将使用傅里叶变换红外光谱和热分析技术来确定，并将通过气相色谱顶空分析来监测封闭的指纹。在这些处理之后，样品将被储存在规定的温度和湿度条件下，该条件旨在模拟在良好和不良控制的档案和家庭环境中的条件。一些样品将被储存在露天，一些样品被装在不透水的信封内；这些样品将受到定期监测。一些样本将保留在密封的围栏中，直到检查。样品将储存长达两年。图像质量的变化将通过密度、光泽和色度测量进行客观评估。最后一项将在宏观和微观(亚毫米)尺度上进行比较。将使用光学和扫描电子显微镜来确定染料和/或颜料的横向和垂直移动。在对印刷品进行分析后，将制定与负责保存和保存数码印刷品的文物组织有关的长期保存印刷品的建议程序。

Increasing numbers of galleries, museums and archives are including ink jet printed materials into their collections, and therefore displays. There is evidence that the instability of these prints is such that images can suffer deterioration in print quality or in extreme cases, a loss of information over an extended period of time. This is shorter than the period typically required for perceptible deterioration to occur in other paper-based artworks. The image stability of prints is affected by a number of factors some of which have already been studied. However the role played by the solvent in the loss of image quality has yet to be explored.This research will investigate the effects of solvent content which may increase/promote the loss in image quality of the hard copy prints when stored or displayed under a range of temperature and humidity conditions.Building on an extensive literature survey, laboratory based research will be carried out on a range of contemporary ink jet printed materials. The materials selected will include all types of ink jet systems that use process colour inks on both swellable and non-swellable substrates, including fine art digital print papers. Samples will be subjected to a variety of defined treatments designed to reduce or remove the solvent content. The extent of solvent removal will be established using fourier-transform infra red spectroscopy and thermal analysis techniques, and will be monitored for enclosed prints through gas chromatographic headspace analysis. Following these treatments, samples will be stored under defined temperature and humidity conditions that are intended to simulate conditions found in both well and poorly controlled archival and domestic environments. Some samples would be stored in the open, some contained within non-permeable envelopes; these will be subject to periodic monitoring. Some samples will remain within sealed enclosures until examination. Samples will be stored for up to two years.Changes in image quality will be assessed objectively from density, gloss and colorimetric measurements. The last will be carried out and compared on a macro and micro (sub-millimetre) scale. Optical and scanning electron microscopy will be employed to establish the movement, both lateral and vertical, of the dyes and/or pigments. Perceptible variations in print quality will also be assessed subjectively using panels of observers.Following analysis of the prints, recommended procedures for long term preservation of prints will be made which are relevant to heritage organisations responsible for the conservation and preservation of digitally printed artefacts.