论文部分内容阅读
不列颠图书馆发明了三种保护复印的新方法,其中每一种都使一部分迄今为止受到“禁锢”的书籍和其他卷册得以复制。高架式照相复印机提供优质的照片复印件,影象数字转换器使每页影象形成电子模型,用于电子计算机存贮、文件传递、屏幕显示、打印输出、影象放大或者这些项目的适当组配;对于用这两种方法也不能保证安全复印的书籍,可通过“电致发光复印”提供复印品。 无论是纸质复印、拷贝缩微胶片或翻版电子信息,也无论是为了存档还是提供公用复印件,凡需要复印资料都将连续进行一段时间。不管从什么意义上说,单张纸的复印是容易的,然而合订的卷册就成问题了。主要是不容易操作,通常是把卷册翻转使每页向下。尤其是装订部位由于这种快速翻动导致破损。特别在“槽沟”部位(即靠近装订的页边),要得到不变形的、完整的影象也成问题。同时,许多种类的灯泡发出紫外线,可能对纸张造成损害。虽然复印件是提供了,但其结果是损害原件,实际上这种严重损害在复印时就已经造成了。
The British Library has invented three new ways of protecting photocopies, each of which duplicates a portion of the books and other volumes that have so far been “confined”. An overhead photocopier provides a good photocopy of the photo and the digitizer creates an electronic model of each page of the image for electronic computer storage, file transfer, screen display, printout, image enlargement, or a suitable group of these items For books that can not be safely copied by either of these methods, photocopies can be provided by “electroluminescent copy.” Whether paper copy, copy microfilm or pirated electronic information, whether it is to archive or provide a common copy, where the need for copying information will continue for some time. In any sense, the copying of sheets is easy, but the bound volumes become problematic. Mainly not easy to operate, usually flip the volume down each page. In particular, the binding site is damaged by this rapid turning. Especially in the “groove” area (ie near the margin of the binding), obtaining a non-distorted, complete image is problematic. At the same time, many types of light bulbs emit ultraviolet light, which can damage the paper. Although a copy was provided, the result was damage to the original, in fact, such serious damage was already made at the time of photocopying.