ANSI AIIM MS48-1999 pdf download Recommended Practice for Microfilming Public Records on Silver-Halide Film
3 Definitions Definitions for terms used in this document may be found in AIIM TR2-1980 and ISO-6196. Terms used in this practice and not defined in these documents appear here. Permanent records. Permanent records are any records determined by the appropriate public records authority to have sufficient value to warrant their permanent retention and continued preservation.
4 Microfilming Permanent Records
4.1 General, The integrity of the original records authorized for microfilming should be maintained by ensuring that the microfilm copies are adequate substitutes for the original records and serve the purposes for which such records were created and/or maintained. All of the foliow- ing measures and any others found necessary shall be observed in any microfilming project which is designed to ensure the preservation and integrity of the records.
4.1.1. Record Detail. Microimages, including the generation intended for use, shall contain all of the record information, preprinted or added, shown on the originals.
4.1.2. Organization. Microimages of the records shall be arranged, identified, and indexed so that any individual document or component of the records can be located with reasonable ease.
4.1.3. Background Density. Photographic background densities on camera negatives shall meet the requirements shown in Table 1, and for COM in Table 2.
4.1.4. Determining Minimum Required Resolution. The method of determining minimum required resolution shall conform to the Quality Index Method of Predeter- mining Resolution as given in ANSI/AIIM MS23-1983. It is generally possible to achieve a higher resolution with a planetary camera than with a rotary camera. The ultimate criteria, both for resolution and density, are for the microfilm to be legible for its intended use. A minimum quality index level of 8.0 (for high quality) shall be main- tained; Le. a lower case “e” that is 2 mm high will be reproduced to three generations shall be filmed on a system that will resolve the 5.0 pattern, regardless of reduction ratio used or type of camera used.
4.1.5 Targets. The appropriate technical and titling targets as described in ANSIIAIIM MS19-1987 and ANSI/AIIM MS23-1983 shaii be used when preparing, filming, and inspecting microfilm of documents.
4.2 Roll Microfilm
4.2.1 Identification. The images at the beginning of each roll of microfilm shall include information identifying the agency and subordinate organization(al) unit($ whose records are covered; the title of the records (with identifica- tion of contents if not evident from series title); the microfilm roll number; the security classification, if any; and, to the extent possible the inclusive dates, names, or other data identifying the first and last records on the roll.
4.2.2 Finding Aids. Any indexes, registers, or other finding aids shall be microfilmed at the beginning of the records to which they relate.