ISO 9378:1993 PDF

Name: ISO 9378:1993 — Photography — Vesicular microfilm — Determination of ISO speed and ISO range
SKU: ISO 9378:1993
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Photography — Vesicular microfilm — Determination of ISO speed and ISO range

Название (английский):

ISO 9378:1993

Photography — Vesicular microfilm — Determination of ISO speed and ISO range

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 9
Дата публикации:: 23 сентября 1993 г.
Издание:: ISO IS 9378 edition 1 version 1
ICS:: 37.040.20

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Описание (английский):

The principle of the method specified is exposing and processing samples as specified, obtaining density measurements from the resultant images to produce a sensitometric curve from which values are taken and used to determine ISO speed and ISO range. The method applies to vesicular microfilms which have their principal spectral sensitivity in the region of 350 nm to 450 nm and are used to produce negative-appearing images from positive originals and positive-appearing images from negative originals.

Abstract

Похожие стандарты

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Overview

ISO 9378:1993 provides a standardized method for determining ISO speed and ISO range for vesicular microfilm in photographic applications. Developed by the International Organization for Standardization (ISO) Technical Committee 42 (Photography), this standard ensures consistent and reliable measurement of the light sensitivity and tonal range of vesicular microfilms. These films are primarily sensitive to radiation between 350 nm and 450 nm and are widely used for generating negative-appearing images from positive originals and vice versa. By following ISO 9378:1993, manufacturers, testing laboratories, and end users can reliably compare different vesicular microfilms and select the optimal product for their document imaging and archiving needs.

Key Topics

Vesicular Microfilm Sensitometry The standard outlines the procedure for exposing and processing vesicular microfilm samples to derive a sensitometric curve. This curve demonstrates the relationship between exposure and resulting image density, allowing for calculation of ISO speed and ISO range.

ISO Speed & ISO Range Measurement

ISO Speed: Quantifies the sensitivity of the microfilm to light exposure.
ISO Range: Indicates the effective range of exposures that produce useful image density, related to the log exposure range (LER).

Sampling and Conditioning Ensures that samples are handled, stored, and prepared in accordance with manufacturer recommendations and under defined conditions (e.g., temperature and humidity control), ensuring reproducibility of results.

Test Methods & Equipment The standard describes the required sensitometers, radiant energy sources (such as gallium-iodide-doped mercury lamps), and densitometers, along with methods for confirming calibration and measurement accuracy.

Processing and Fixing Details the conditions for film processing, including development temperatures, exposure procedures, and the need to fix the latent image without affecting the measured results.

Applications

Product Comparison and Quality Control ISO 9378:1993 enables manufacturers and users to assess and compare the performance characteristics of vesicular microfilm products from various sources according to objectively measured ISO speed and ISO range values.

Selection for Specific Imaging Needs By standardizing sensitivity and tonal range measurements, users can select vesicular microfilms that best match the density requirements of positive or negative originals, ensuring optimal image quality in records management, archiving, and micrographic duplication.

Duplication and Micropublishing Widely applied in the duplication of computer output microfilm (COM), source document imaging, and micropublication, the standard helps determine which vesicular films are most effective for particular duplication and reproduction scenarios.

Compliance and Interoperability Laboratories and organizations following ISO 9378:1993 benefit from internationally recognized, reproducible results, facilitating compliance and compatibility across borders and markets.

Related Standards

ISO 5 Series:

ISO 5-1: Photography - Density measurements - Part 1: Terms, symbols and notations
ISO 5-2: Photography - Density measurements - Part 2: Geometric conditions for transmission density
ISO 5-3: Photography - Density measurements - Part 3: Spectral conditions

ISO 554: Standard atmospheres for conditioning and/or testing - Specifications

ISO 8374: Photography - Determination of ISO safelight conditions

ISO Standards Handbook 3: Statistical methods for sampling and evaluation

By referencing these related documents, users ensure that all supporting measurements and environmental controls meet international best practices, further strengthening the reliability and comparability of vesicular microfilm performance assessments in professional imaging environments.

ISO 9378:1993 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

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