DEC STD 162

This document, DEC Standard 162, Rev. B, outlines the comprehensive format and quality requirements for all types of microforms produced by Digital Equipment Corporation.

Key aspects of the standard include:

• Foundation in Existing Standards: The requirements are based on and align with appropriate industry standards (e.g., NMA, ANSI) and U.S. Government specifications, adopted by the Digital Micrographics Committee.
• Microform Types Covered: It addresses specific requirements for microfiche (from source documents and Computer Output Microfilm - COM), roll microfilm, and microfilm aperture cards.
• Quality Specifications: Detailed numerical criteria are provided for image quality, including minimum and maximum density levels and resolution (line pairs per millimeter).
• Production & Quality Control: The standard mandates specific procedures for production and quality control, such as certification of records, thiosulphate content testing for processed film, and guidelines for COM.
• Equipment & Materials: It requires that micrographics equipment and materials purchased and used by Digital, especially for permanent record retention (e.g., high-quality silver films), conform to industry standards.
• Purpose: The standard serves as a reference for Digital organizations producing microform products for internal use or external sale, ensuring consistency and adherence to quality benchmarks.