Imaging materials — Processed imaging materials — Photographic activity test for enclosure materials
成像材料——加工成像材料——外壳材料照相活性试验
发布日期:
2007-06-11
ISO 18916:2007规定了照相活性和染料耦合器反应性试验的程序。
ISO 18916:2007适用于一般的摄影外壳材料,如纸张、纸巾、纸板、垫板和塑料。它也适用于摄影外壳材料的组件,如粘合剂、墨水、油漆、标签和胶带。
ISO 18916:2007评估了外壳与处理过的银明胶、颜色(染料明胶)、染料基和颜料基油墨制成的喷墨打印、热染料扩散转移(“染料子”)打印、数字打印染料之间可能存在的化学相互作用-
扩散转移打印、液体和干燥碳粉静电复印打印、液体碳粉静电打印和长期存储后的重氮图像。它不适用于有害的物理相互作用,如堵塞(粘在一起)、染料渗出、粘合剂迁移或增塑剂渗出。它不适用于外壳的重要标准,如其固有的化学稳定性、物理完整性和工艺。通过摄影活动测试(PAT)并不意味着材料是存档的。该术语没有明确定义,本标准中未使用。ISO 18902涵盖了照片安全、存储机柜及其组件,其中包括通过摄影活动测试的标准。
如果发现某一特定品牌的商用外壳材料在长期储存中是安全的,则无法保证后续批次将包含相同纯度、化学惰性、浓度或坚固结构的相同成分。因此,每年或每次配方或供应商变更时对材料进行测试。对于以各种颜色制造的材料,如纸张和油墨,每种颜色都要单独评估和报告。
ISO 18916:2007 specifies the procedure for the photographic activity and dye coupler reactivity tests.
ISO 18916:2007 is applicable to general photographic enclosure materials such as paper, tissue, cardboard, mat board and plastics. It is also applicable to components of photographic enclosure materials such as adhesives, inks, paints, labels, and tape.
ISO 18916:2007 evaluates possible chemical interactions between enclosures with processed silver-gelatin, colour (dye-gelatin), inkjet prints made with dye-based and pigment-based inks, thermal dye diffusion transfer (“dye sub”) prints, digitally printed dye-diffusion-transfer prints, liquid- and dry-toner xerographic prints, liquid-toner electrostatic prints, and diazo images after long-term storage. It does not pertain to harmful physical interactions such as blocking (sticking together), dye bleed, adhesive migration, or plasticizer exudation. It does not pertain to important criteria of enclosures such as their inherent chemical stability, physical integrity, and workmanship. Passing the photographic activity test (PAT) does not indicate that a material is archival. This term has no clear definition and is not used in this standard. Photo-safe, storage enclosures and their components are covered in ISO 18902, which includes passing the criteria of the photographic activity test.
If a particular brand of commercially made enclosure materials is found to be safe for long-term storage purposes, there is no assurance that subsequent batches will contain the same ingredients of the same purity, chemical inertness, concentrations, or sound and sturdy construction. For this reason, materials are tested annually or upon each formulation or supplier change. For materials which are manufactured in a variety of colours, such as papers and inks, each colour is evaluated and reported separately.