| 摘要 |
Film units having a circular film disk (2), a plurality of image areas (28) defined by exposed borders, metering notches (24) around the disk periphery and a rigid core (4) in a central opening (26) are manufactured by cutting a plurality of perforations (27) along a circular locus and exposing the borders in a moving web of photographic material prior to mounting the core (4) in the central opening (26). The web (12) is severed along the circular locus to remove a film unit (1) after mounting the core (4) with the perforations (27) forming the metering notches (24) around the periphery of the disk (2). |
