专利汇可以提供Automatic facsimile method of microfilm专利检索,专利查询,专利分析的服务。并且PURPOSE: To eliminate complex series of adjustment and to allow facsimile of microfilms by simple operation by facsimileing after automatically adjusting light exposure, focus of a coma picture, and a position of a frame range of a coma picture.
CONSTITUTION: When a microfiche film 2 is transferred to an optical system, its picture information reaches a licenser 8 through a lense system 3, where luminous energy of a light source 1 is automatically adjusted so that input light exposure is detected and enters a prescribed range. Then the facsimile system compares output voltages for every picture element of the licenser 8, automatically adjusts a distance between the film 2 and the lens system 3, and adjusts focus so that difference between the maximum value, and the minimum value of said output voltage will become maximum. Lastly the system roughly scans picture information of a coma picture with the licenser 8 by rotating a mirror 7 and determines a position and inclination of the coma picture within a range of a rectangular processing frame before adjusting these positions and inclination automatically.
COPYRIGHT: (C)1985,JPO&Japio,下面是Automatic facsimile method of microfilm专利的具体信息内容。
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