Recent Studies on Standardizing the Dubray-Howell Perforation for Universal Application

The adoption of safety base film throughout the motion picture industry has required the abandonment of the Bell & Howell perforation for color release prints. This fact presents an opportunity to achieve the long-desired goal of a single standard perforation for negative and positive films in all applications. Tests are described and conclusions reached covering registration problems in the studio, studio laboratory and release laboratory, as well as accelerated and normal release life tests on Dubray-Howell perforated black-and-white prints.

Print ISSN

0898-042X

Published

1951-01

Content type

Original Research

DOI

10.5594/J05090