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AS/NZS 4577:1999

[Current]

Micrographics — Readers for transparent microforms — Performance characteristics

Specifies the essential performance characteristics for readers with magnification less than or equal to 50:1 with black and white microfilm to a maximum width of 35 mm. It also specifies the performance of readers for roll microfilm, microfiche and image cards. This Standard is identical with and has been reproduced from ISO 6198:1993.
Published: 05/05/1999
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Definitions
4 Measurable characteristics
4.1 Magnification
4.2 Image quality
4.2.1 Resolution
4.2.2 Geometric distortion
4.3 Screen luminance and contrast
4.3.1 Screen luminance
4.3.1.1 Procedure
4.3.1.2 Requirements
4.3.1.2.1 Rear projection readers
4.3.1.2.2 Front projection readers
4.3.2 Screen contrast
4.3.2.1 Procedure
4.3.2.2 Requirements
4.4 Safety
4.4.1 Stability of reader
4.4.2 Temperature
4.4.2.1 Film temperature in the film gate
4.4.2.2 Temperature of reader
4.4.3 Fire hazard
4.5 Noise
5 Additional required characteristics
5.1 Image handling
5.1.1 Image orientation
5.1.1.1 Roll film readers
5.1.1.2 Readers for microfiche and image card
5.1.2 Loading of microforms
5.1.3 Changing components for different microform formats
5.1.4 Motor-driven roll film devices
5.2 Optical characteristics
5.2.1 Focus
5.2.2 Internal light interference
5.2.3 Optical aberrations
5.2.4 Screen size
5.2.4.1 Roll film readers
5.2.4.2 Microfiche and image card readers
5.2.4.3 Readers with image rotation devices
5.2.5 Screen reflections
5.3 Risk of film damage in roll film readers
5.4 Safety
5.4.1 Risk of operator injury
5.4.2 Electrical
5.4.3 Screen
5.5 Controls
5.6 Markings
5.7 Maintenance
5.7.1 Operator maintenance
5.7.2 Lamp
5.8 Operator's manual
6 Optional characteristics
6.1 Magnification
6.2 Image rotation
6.3 Screen luminance control
6.4 Hood
6.5 Reversing direction of travel of microfilm
6.6 Lamps and fuses
6.7 Protection of the reader
Annex A
Cited references in this standard
Content history
[Current]
[Superseded]
[Superseded]
DR 98489