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SMPTE Journal ( Volume: 100, Issue: 11, November 1991)
[ACTIVE]

Improved-Strength Eastman 35mm Motion-Picture BH Perforations

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
SMPTE J
Volume
100, No. 11, pp. 884–886
Abstract
Because of its fundamental shape, the 35mm BH film perforation has historically had a weakness for tearing at the corners. Recognition of this problem, through literature and consumer contact, led to the development by Eastman Kodak Co. of a modified perforation with .005-in. corner radii. Laboratory and field testing confirmed the rounded corners resulted in improved strength with no detrimental effects. Routine production has now begun, and modifications to the standards literature are in progress through the appropriate SMPTE and ISO committees.
Publication Date
1991-11-01
DOI
10.5594/J02408
ISSN
Print: 0036-1682
Link
https://doi.org/10.5594/J02408
Author(s)
Peter E. PylipowEastman Kodak Co., Rochester, NY 14652.
Copyright
© 1991 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • Proposed SMPTE Standards for Motion-Picture Film (35-mm)—Perforated BH [Active]
  • Proposed American Standard [Active]
  • 1. “Report of the Film Perforations Committee,” Transactions of the SMPE , No. 16: 303 – 308 , 1923 . EXTERNAL
  • 2. “Report of the Sub-Committee on Perforation Standards,” J. SMPE , 16 : 376 – 387 , Oct. 1937 . EXTERNAL
  • 3. Ibid. EXTERNAL
  • 6. Hill W. G. , “Modified Negative Perforation Proposed as a Single Standard for 35-mm Negative and Positive Motion Picture Film,” J. SMPTE 52 : 108 – 123 , Aug. 1951 . EXTERNAL
  • 7. ANSI/SMPTE 93– 1986 “Motion Picture Film (35mm) - Perforated BH.” . EXTERNAL
  • 8. ISO 491– 1988 (E) “Cinematography–35mm Motion Picture Film and Magnetic Film - Cutting and Perforating Dimensions.” . EXTERNAL
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Peter E. Pylipow; Improved-Strength Eastman 35mm Motion-Picture BH Perforations, SMPTE Journal ( Volume: 100, Issue: 11, November 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J02408
Snippet:
Peter E. Pylipow; Improved-Strength Eastman 35mm Motion-Picture BH Perforations, SMPTE Journal ( Volume: 100, Issue: 11, November 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J02408

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Peter E. Pylipow; Improved-Strength Eastman 35mm Motion-Picture BH Perforations, SMPTE Journal ( Volume: 100, Issue: 11, November 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J02408
Snippet:
<span class="citation">Peter E. Pylipow; <cite>Improved-Strength Eastman 35mm Motion-Picture BH Perforations</cite>, SMPTE Journal ( Volume: 100, Issue: 11, November 1991); SMPTE, 1991. Available at <a href="https://doi.org/10.5594/J02408" target="_blank" rel="noopener">https://doi.org/10.5594/J02408</a></span>

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Peter E. Pylipow; Improved-Strength Eastman 35mm Motion-Picture BH Perforations, SMPTE Journal ( Volume: 100, Issue: 11, November 1991); SMPTE, 1991
doi: 10.5594/J02408
url: https://doi.org/10.5594/J02408
Snippet:
<li>
Peter E. Pylipow; <cite id="bib-10-5594-j02408">Improved-Strength Eastman 35mm Motion-Picture BH Perforations</cite>, SMPTE Journal ( Volume: 100, Issue: 11, November 1991); SMPTE, 1991
<span class="doi">10.5594/J02408</span>
</li>

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