ISO 1039:1995 PDF

Overview

ISO 1039:1995 is an international standard that specifies the dimensions and sizes of cores used for motion-picture and magnetic film rolls. Developed by the ISO Technical Committee ISO/TC 36 on Cinematography, this third edition replaces the previous 1988 version with technical revisions to ensure standardization in film core manufacturing. This standard aims to harmonize the dimensions of film cores, facilitating compatibility and interchangeability in the cinematographic industry worldwide.

Key Topics

• Core Dimensions: ISO 1039:1995 defines nominal widths and diameters for film cores used with film widths of 8 mm, 16 mm, 17.5 mm, 35 mm, 65 mm, and 70 mm. Precise dimensions with tolerances are prescribed to ensure consistency.
• Designation System: Cores are labeled with numbers representing their nominal width and outer diameter in millimeters (e.g., 8 x 50). This facilitates easy identification and specification.
• Driving Holes: For certain core sizes, such as the 35 x 125 mm core, the standard specifies the size, number, and placement of drive holes that help secure and rotate the core on film equipment.
• Anchoring Slots: The standard also recommends features such as anchoring slots or notches that secure the film end onto the core, allowing it to be wound properly. The slots are designed to minimize film marking.
• Tolerance Control: ISO 1039 recognizes the need for relatively wide tolerances in some dimensions to accommodate practical manufacturing differences, but encourages tighter tolerances for molded cores to prevent variations that can affect film handling.

Applications

• Film Production and Distribution: Producers and distributors of cinematic films and magnetic tapes utilize ISO 1039:1995 to ensure their film rolls are compatible with existing cinematographic equipment globally.
• Equipment Manufacturing: Manufacturers of film projectors, editors, and rewinders rely on standardized core sizes to build devices that correctly fit film rolls, enabling seamless operation and maintenance.
• Archiving and Preservation: Film archives use standardized cores for storing and handling various film formats safely, reducing risk of damage by ensuring proper fit and tension during handling and projection.
• Magnetic Media Handling: The standard also covers magnetic film rolls, supporting industries that handle audio and video magnetic tape formats for professional and archival use.

Related Standards

• ISO 22112 - Cinematography - Film reels and film cartridges: Complements ISO 1039 by specifying the reels and cartridges that hold film cores and rolls.
• ISO 5901 - Cinematography - Film perforations for 35 mm motion-picture film: Details the perforation standards for film compatible with the core sizes defined in ISO 1039.
• IEC 60062 - Marking codes for resistors and capacitors: Often referenced in conjunction for electronic equipment incorporating magnetic film technology.
• ANSI/SMPTE Standards: Various Society of Motion Picture and Television Engineers (SMPTE) standards coordinate with ISO cinematography standards for comprehensive industry coverage.

By adhering to ISO 1039:1995, the film and magnetic media industries benefit from consistent core dimensions that promote equipment interoperability, enhance manufacturing quality, and protect media integrity throughout the motion-picture supply chain.