Oregon Administrative Rules › Chapter 166 - SECRETARY OF STATE, ARCHIVES DIVISION › Division 25 - MICROFILM STANDARDS RULES › Section 166-025-0015 - Technical Specifications for First-Generation 16 mm, 35 mm, and 105 mm Silver-Gelatin Source Document Roll Microfilm for Permanent and Long-Term Oregon Public Records

Current through Register Vol. 63, No. 7, July 1, 2024
(1)
			 Microfilm Specifications: All security microfilm for long-term or permanent
			 records shall be 16 mm, 35 mm, or 105 mm negative non-perforated silver gelatin
			 type on a polyester base, as described in ANSI IT9.1-1996; Imaging Media (Film)
			 -- Silver Gelatin Type -- Specifications for Stability. The film shall be at
			 least 0.13 mm thick.
(2) Reels:
			 Processed film shall be on storage reels which are chemically inert, in
			 compliance with ANSI IT9.2-1998; For Imaging Media -- Photographic Processed
			 Films, Plates, and Papers -- Filing Enclosures and Storage Containers, are
			 sturdy, and have dimensions which conform to ANSI/AIIM MS34-1990; Dimensions
			 for Reels Used for 16 mm and 35 mm Microfilm. The film shall be stored with the
			 start target at the outer end in accordance with ANSI/AIIM MS23-2004P; Practice
			 for Operational Procedures/Inspection and Quality Control of First-Generation
			 Silver Gelatin Microfilm of Documents.
(3) Restrainers: Only acid-free, button tie
			 paper bands in compliance with ANSI IT9.2-1998; For Imaging Media --
			 Photographic Processed Films, Plates, and Papers -- Filing Enclosures and
			 Storage Containers shall be acceptable to restrain film on its reel.
(4) Enclosures: Film enclosures (containers)
			 shall be inert black plastic.
(5)
			 Quality Control-Inspection: Inspection and quality control data shall be
			 recorded at the time the film is processed. A film inspection form is available
			 from the Archives Division. First-generation (camera) film shall be inspected
			 frame-by-frame for visible defects and missing documents. Inspection may be
			 performed on a light table using an eye loupe for the frame-by-frame inspection
			 and under a microscope for the inspection of resolution. The inspector shall
			 wear clean, white, lint-free cotton gloves when handling the film. All
			 inspection shall be performed in accordance with ANSI/AIIM MS23-2004P; Practice
			 for Operational Procedures/Inspection and Quality Control of First-Generation
			 Silver Gelatin Microfilm of Documents, Section 8. Security copies of film shall
			 be free from scratches, gouges, blemishes, dust, dirt, or
			 fingerprints.
(6) Residual
			 Thiosulfate: All film shall meet the requirements for residual thiosulfate ion
			 concentration as specified in ANSI IT9.1-1996; For Imaging Media (Film) --
			 Silver-gelatin type- Specifications for Stability, Section 6.4. The maximum
			 allowable thiosulfate ion concentration is .014 grams per square meter. Testing
			 for residual thiosulfate ion concentration shall be done by using the Methylene
			 Blue method in accordance with ANSI/ASC PH4.8-1985; For Photography
			 (Chemicals)-Residual Thiosulfate and Other Chemicals in Films, Plates and
			 Papers- Determination and Measurement, Section 5. This test shall be conducted
			 within two weeks of film processing and may be performed at the processing site
			 or by an independent laboratory. All test results shall be
			 documented.
(7) Target Density: The
			 aim point density shall be 1.00 ± .10. The acceptable density range on
			 targets shall be .80 - 1.25. There shall not be more than a .20 density shift
			 on targets in a single roll. Any roll which falls outside the acceptable .80 -
			 1.25 density range on targets shall be re-filmed. Density variation shall not
			 be greater than .15 across a target. The plain white pages or acceptable
			 density target photographed at the beginning and end of each roll of film shall
			 be used as the primary density measurement targets.
(8) Reduction Ratio: The reduction ratio used
			 shall approximately fill the image area across the width of the film as seen on
			 the camera's projected image area; the ratio shall not be less than 8:1. All
			 edges of the document shall be visible in the image area. (See ANSI/AIIM
			 MS23-2004P; Practice for Operational Procedures/Inspection and Quality Control
			 of First-Generation Silver-Gelatin Microfilm of Documents, Section 3.6.)
			 Reduction ratio changes within the same record series shall be avoided. If they
			 are necessary, however, the change in ratio shall be identified by an
			 informational target filmed immediately before each change.
(9) Resolution: Each roll of first-generation
			 film shall be evaluated for resolution by viewing the standard ISO Resolution
			 test chart (see OAR 166-025-0020  on Targets and Certifications) at 100X
			 magnification. The smallest distinguishable test pattern must correspond to the
			 correct reduction ratio as seen in Figure 1:
Figure 1
Reduction Ratio - Smallest ISO Test Chart Pattern Read -
				Resolving Power
8:1 - 10.0 - 80
12:1 - 9.0 - 108
15:1 - 7.1 - 106
16:1 - 7.1 - 114
17:1 - 6.3 - 107
20:1 - 5.6 - 112
21.2:1 - 5.6 - 119
24:1 - 5.0 - 120
28:1 - 4.5 - 126
30:1 - 4.5 - 135
33.9:1 - 4.0 - 136
36:1 - 4.0 - 144
42.4:1 - 3.2 - 136
(10) Splicing: There shall be no more than
			 six splices on security copies of film. Retakes shall include at least two
			 pages preceding and following the pages to be refilmed. There shall be no
			 splices between the technical target and the text. All splices shall conform to
			 ANSI/AIIM MS18-1992(R1998); Splices for Imaged Film -- Dimensions and
			 Operational Constraints.
(11)
			 Targets and Certification: All microfilm shall conform to the standards for
			 targets and certifications set forth separately in these rules.
Publications referenced are available from the
				  agency.
Stat. Auth.: ORS
				  192.070,
				  357.825(2),
				  357.855 &
				  357.895
Stats. Implemented: ORS
				  357.825(2),
				  357.855 &
				  357.895