Microfilm and microfiche editions are complete full-page reproductions of the original documents. They are made on silver polyester-base microfilm and meet the requirements of ANSI/AIIM Standards. A non-silver option is available for most current-year serials and for backfile years of some newspapers.
Recommended storage temperature is 70° F (21° C) or lower with a relative humidity of 20-30% as specified in the ANSI Standard IT 9.11.
- Silver gelatin microfilm (16mm and 35mm) on four mil polyester base; conforms to ANSI/NAPM Standard IT 9.1 and ANSI/AIIM MS14
- Silver gelatin microfiche (105mm x 148mm) on seven mil polyester base; conforms to ANSI/NAPM Standard IT 9.1 and ANSI/AIIM MS5
- Vesicular microfilm (35mm only) on 3.6 mil polyester base; conforms to ANSI/NAPM Standard IT 9.12
- Vesicular microfiche (105mm x 148mm) on 4.3 mil polyester base; conforms to ANSI/NAPM Standard IT 9.12
- Diazo microfiche (105mm x 148mm) on 4.3 mil polyester base; conforms to ANSI Standard IT 9.5
- Positive or negative polarity optional for most titles
- Enlarged eye-readable titles (microfilm from 1976 on)
- No microfilm splices
- Microfilm reels conforming to ANSI/AIIM MS34
- Microfilm reel design with optional film-anchoring capability
- Neutral pH microfilm cartons with appropriate title and indexing information
- Microfiche envelopes suitable for storage
Newspapers
UMI Newpapers in Microform are flimed according to these specifications:
35mm Microfilm—Silver and Vesicular
- Reduction ratio 1:16 to 1:21**
- 1B comic format, 2B comic format, or 1A cine format, depending on the title ordered
- Vesicular film available in positive polarity only. For availability of negative polarity film for selected titles, please inquire.
Microfiche—Silver and Non-silver
- Reduction ratio 1:26 and 1:36**
- Negative polarity on diazo-type film for some titles
Special UMI Serials
UMI offers a limited number of non-newspaper titles, which are filmed according to these specifications:
35mm Microfilm—Silver and Vesicular
- Reduction ratio nominally 1:18*
- 2A cine format
16mm Microfilm—Silver (not available in vesicular)
- Reduction ratio nominally 1:24*
- 2B comic format
- 3M Ektamate and Flange cartridges available
Microfiche—Silver and Non-silver
- Reduction ratio nominally 1:24*
- 98-page format
- Opaque white title backing (silver)
- Opaque black title backing (vesicular)
- Negative polarity on diazo film for some titles
* To accommodate oversized titles, reduction ratios may vary from those specified.
** To accommodate newspapers of various sizes, reduction ratios may vary |
