| 摘要 |
Many problems are encountered in photographing or photocopying bound books using current techniques. This is especially true during microfilming old and valuable books. These problems arise partially from the requirement to avoid straining the book to be photographed, especially the spine of the book, and partially from the manner in which the inner page portions are distorted when presented for photographing. A microfilm device of simple construction, which is also simple to operate, to overcome these problems, has a book cradle which can be tilted through at least a 90 DEG arc. The support walls of the book cradle stand perpendicular to one another to support the book cover thereby defining two sides of a work space. The book cradle rests on a traverse guide which can be raised and lowered such that the top surface of one support wall, or the top page of a stack of book pages, can be pressed against the bottom surface of a glass plate which can be moved horizontally into the work space, the resting position of the horizontal glass plate being centered on the focal axis of the microfilm camera.
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