Micrographics — Image mark (blip) used with 16 mm and 35 mm roll microfilm

This International Standard specifies the location, size, and density of single-size image marks and small, medium, and large image marks recorded on 16 mm and 35 mm microfilm for use in image-mark retrieval systems. It applies to 16 mm and 35 mm microfilm used in a retrieval system, regardless of the method and equipment used to generate the original or duplicate microfilm.