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我国档案馆、图书馆等机构保存了大量的缩微胶片档案,醋酸综合症是影响缩微胶片档案寿命最为重要的原因。近30年来,缩微胶片档案一直受到醋酸综合症的困扰,如何及时监测醋酸综合症是影像档案保护研究的热点和难点。本文对中国民族图书馆缩微胶片档案的保存现状进行调研,以AD试纸监测醋酸综合症发生、发展及其对缩微胶片档案的影响。研究发现,AD试纸能够准确监测醋酸综合症的发生,在缩微胶片档案保护中起到预示和监测作用,能够更好地防治醋酸综合症。 相似文献
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“醋综合症”现象及危害。自1948年发明醋酸纤维素酯片基以来,曾使用过二醋酸、三醋酸、醋酸丙酸、醋酸丁酸等纤维素酯片基,而广泛用于缩微胶片的是三醋酸纤维素片基。实际上,三醋酸纤维素也并非是其准确的称谓,由于醋酸纤维素在全部羟基被乙酰化后,其乙酰基含量为44.8%。但这种材料在商用的实际溶剂中的溶解度有限,不适于作片基使用, 相似文献
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缩微胶片衰变现象探析 总被引:1,自引:0,他引:1
我国从70年代开始,许多档案馆、图书馆和大型企业等部门将图书、档案、文献资料缩微化,拍摄了大量的缩微胶片。但是由于胶片先天性不足,或因显影加工不彻底与保存条件恶劣,有些已产生了显著的衰变现象。其中有醋酸片基因三醋酸纤维素酯水解酸化形成“醋综合症”;银影像因乳剂层中的杂质和环境中的过氧化物形成氧化还原斑;聚酯片基的缩微片在温湿度经常波动的环境中保存,乳剂层与片基剥离,在显微阅读器上观察到牛顿环;在银影像的高密度部位产生“银镜”现象与低密度部位的黄变;乳剂层出现油迹状物以及霉菌滋生蔓延形成霉斑等。本文仅就氧化… 相似文献
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本文论述了“醋酸综合症”对档案缩微品的损害,提出了“醋酸综合症”的检测方法与防治措施,为档案缩微品的长期保存提供了切实可行的方法。 相似文献
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档案是社会实践活动直接形成的、有保存价值的历史记录.保护技术作为档案管理工作中一项重要内容,就是要尽可能地延长档案的寿命,以满足长期保管利用的要求.档案保护技术工作在为档案服务的过程中,又客观地产生了另一类有关档案保护实践的原始记录,记载一些重要的事实、行为、现象、数据、经验、结论等,这些记录与档案的安全以及使用寿命息息相关,具有客观真实性、知识存储性、参考利用性和长期保留的价值,把它们收集整理成卷,形成严格意义上的档案,这就是保护技术档案,也就是保护档案的档案.在一些部门已经建立的温湿度监测档案、库房疫情监测档案、纸张酸度监测档案、缩微胶片"醋酸综合症"监测档案、修复档案等就属于这一类型的档案.本文从建立保护技术档案的客观需要出发,就近几年建立保护技术档案的探索和实践,围绕建立保护技术档案的意义、方法以及发展方向进行一些讨论. 相似文献
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发生在缩微文献上的油渍现象是胶片在长期的保存过程中较为普遍的衰变现象.分析油渍现象产生的原因,采取适当的措施加以预防,对胶片的永久性保存具有重要意义.本文对油渍现象进行了分析和研究,简要介绍了有关单位对油渍现象研究的过程,在此基础上对非高温高湿情况下缩微胶片油渍现象的产生提出了见解和具有针对性的保存建议. 相似文献
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本文论述了缩微胶片在图书馆中的地位和作用,通过缩微胶片的现状分析,提出了缩微胶片利用率的措施和对策,进而得出缩微胶片是未来图书馆馆藏的重要组成部分的结论。 相似文献
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论国家图书馆缩微文献的保护与开发利用 总被引:1,自引:0,他引:1
介绍了缩微技术的产生,缩微品的保护及保存条件,以及缩微技术对文献保护所起的作用。简单介绍了国家图书馆缩微文献阅览室的馆藏,分析了国家图书馆缩微文献利用率低的情况,提出了关于文献补藏、改善阅览环境和强化宣传的一些建议。最后借鉴国外缩微技术的发展现状,阐述了缩微技术与数字化技术的关系及缩微技术的发展方向。 相似文献
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《资料收集管理》2013,38(4):279-302
An administrative experiment in an industrial R&D from laboratory was conducted to evaluate the effectiveness of converting Chemical Abstracts from hard copy to microfilm. A brief training session on the use of Chemical Abstracts was also conducted in an attempt to increase user (and potential user) awareness of the abstracts and to alter attitudes and behavior toward the abstracts in a positive way. The results of the experiment indicate that substantial space savings in search and photocopy time, and intermediate-to-long-range cost savings can be realized by converting Chemical Abstracts from hard copy to microfilm. Scientists and engineers, however, perceived the microfilm as less accessible and less easy to use than the hard copy, and were less satisfied with the microfilm than they were with the hard copy. The training session, moreover, while generally perceived to be well conducted, informative, and valuable, was not influential in increasing utilization rates for the microfilm in the short run. The small number of individuals who attended the training session and used the microfilm during the trial period precluded linking the training session with users' attitudes toward the abstracts. 相似文献
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张强 《图书馆工作与研究》2011,(1):52-55
本文分析了传统缩微制品在当今图书馆的应用现状及存在的问题,以天津图书馆设计开发的缩微影像数据库为切入点,探讨了缩微制品的数字化应用趋势,并阐述了图书馆资源共享的意义和重要性。 相似文献
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Debbi A. Smith 《资料收集管理》2013,38(2):94-111
The issue in academic libraries of format duplication for the same title in print, microfilm, and electronic formats continues to strain library budgets, facilities, and staff. This article reviews the criteria used by a medium-sized academic library for deciding what formats of the New York Times to continue to collect and maintain. A research study was conducted to ascertain the completeness of coverage in both the online and microfilm formats of this title, with the results used as additional decision criteria. 相似文献
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E R Meiboom 《Bulletin of the Medical Library Association》1976,64(1):36-40
The Martland Hospital Library converted many of its periodical backfiles to 16 mm microfilm cartridges. Some details of program implementation, user reactions, costs, and problems are discussed. In a teaching hospital library microfilm in cartridge format has been well accepted by patrons, in part because the need to read from a projection screen has been minimized by granting liberal printing privileges. 相似文献
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Donna L. Davey 《期刊图书馆员》2013,64(3):223-232
Many libraries have significant backlogs of uncataloged microforms. As attention has shifted toward digitized serials in recent years, unique holdings with high research value may be languishing untapped in the older, often overlooked formats of microfilm and microfiche. Libraries that devote resources to surveying and cataloging hidden collections of microforms greatly facilitate discovery of valuable resources for research. The current effort to survey, organize, process, and catalog more than 10,000 reels of microfilm in the Tamiment Library at New York University has vastly improved access to a multitude of uncommon serials that have been used by researchers, both onsite and via interlibrary loan. 相似文献