Microfilm handling system

Abstract

A reader printer for copying image information from a microfilm having a multiplicity of image frames recorded therein, frame marks for retrieval affixed thereon opposite the image frames, and batch marks for retrieval affixed thereon opposite the leading image frames of batches of image frames. When one of the batches of image frames is designated, the information contained in all the image frames in the batch is recorded sequentially from the last through the first of the image frames. The positioning of each of the image frames included within the designated batch at a prescribed location of the projected light path is accomplished by detecting the frame marks with a sensor, memorizing the positional relationship of the frame marks prior to the operation of print copying, and selectively imparting a motion to the microfilm based on the memorized data of position. The sensor is disposed at a position deflecting from the projected light path. Since the sensor is not affected by the light traveling through the projected light path, the positioning of the image frame at the center of the projected light path is accomplished with high accuracy. When a plurality of copies are to be produced from one image frame, the aformentioned data of positions between the frame marks are renewed each time the production of one copy is completed.