W/D NO S/S
Scope and purpose
This standard specifies the procedures, dimensions, and quality valuesgoverning the microrecording of engineering documentation on 35 mmmicrofilm.This includes procedures, dimensions, and quality valuesfor:
– microform physical characteristics that are related to engineeringsource document microfilming (characteristics such as curl,durabilities, and orientation)
– microimages created by placement of engineering source documents onthe copyboards of 35 mm planetary cameras
– the duplication of the original microimage
The scope of this standard does not include microrecording ofcartographic and architectural material, or other engineering graphicsthat do not conform to requirements of pertinent standards underANSI/ASME Y14, Drafting Practice.
This standard assumes that source documents are of satisfactory qualityfor conversion to a film medium and that the user is applyingphotographic properties of an original drawing or high quality copy.The character and line sizes are assumed to comply with ANSI/AIIMStandard Y14.2M Line Conventions and Lettering and the distinctionbetween the data and background is high-contrast black and white.
ANSI/AIIM MS23 Standard Recommended Practice for operationalprocedures/inspection and quality control of first-generation, silvermicrofilm of documents (the latest version of that publication) shouldbe used to establish the resolution and background density requirementsif the source material is of lesser quality.
- Edition:
- 96
- Published:
- 01/01/1996
- ANSI:
- ANSI Approved
- Number of Pages:
- 15
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