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2. 发明授权

US5202724A Microfilm camera 失效
标题翻译：微胶片相机
公开(公告)号：US5202724A
公开(公告)日：1993-04-13
申请号：US798113
申请日：1991-11-26
申请人： Koichi Nagata , Keijiro Ishii , Fumio Fukumoto
发明人： Koichi Nagata , Keijiro Ishii , Fumio Fukumoto
IPC分类号： G03B27/465 , G03B27/52
CPC分类号： G03B27/465 , G03B27/521
摘要： A microfilm camera comprises a camera head and a document support. The camera head includes a film transport mechanism for intermittently feeding a strip of microfilm past an exposure station at which an aperture plate is disposed. The aperture in the aperture plate is adjustable in one of at least two different sizes by means of a masking flap supported for movement between a first size position, in which a portion of the aperture is shielded, and a second size position in which the masking flap is clear from the aperture. When a document of a relatively small size is placed on the document support, the masking flap is in the first size position, but when a document of a relatively large size is placed on the document support, the masking flap is in the second size position. The camera head also includes a shutter for selectively intercepting and opening an optical path extending through a lens assembly in alignment with the aperture along which imagewise rays of light carrying an image of the document travel towards the microfilm. The microfilm camera also comprises a marking imprint mechanism so designed that, in the case of the microfilmed image of the document of the first size, a single marking is imprinted on the microfilm, but in the case of the microfilmed image of the document of the second size, spaced-apart markings are imprinted on the microfilm.
摘要翻译：微缩胶片相机包括相机头和文件支架。相机头包括胶片传送机构，用于间断地将经过曝光台的缩微胶片放置在其上设置孔板。孔板中的孔径可通过一个遮蔽翼片以至少两种不同的尺寸之一调节，所述遮蔽翼片被支撑用于在第一尺寸位置和第二尺寸位置之间运动，其中一部分孔被遮蔽，皮瓣从孔中清除。当文件尺寸相对较小的文档被放置在文档支架上时，遮盖挡板处于第一尺寸位置，但是当将较大尺寸的文档放置在文档支架上时，遮盖挡板处于第二尺寸位置。照相机头还包括一个快门，用于选择性地拦截和打开延伸穿过透镜组件的光路，该光路与沿着该文件的成像光线沿着微孔行进的成像光线对齐。微缩胶卷相机还包括标记印记机构，其设计为在第一尺寸的文档的缩微胶卷图像的情况下，单个标记印在微缩胶卷上，但是在文档的缩微图像的情况下第二大小，间隔标记印在微缩胶卷上。

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