International Organization for Standardization (ISO)
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ISO 11084-1:1993
Scope
Specifies the positions and dimensions for the pins and holes of three-pin register systems to achieve accurate positioning of originals, separations and printing plates on press and prepress equipment. Applies to punched materials, e.g. photographic materials, foils and papers; machines and devices for punching the above materials; machines and devices using register systems. Does not apply to punched metallic materials.
ISO 11084-1:1993 history
1993ISO 11084-1:1993 Graphic technology; register systems for photographic materials, foils and paper; part 1: three-pin systems