ISO 11142:2005 PDF

Micrographics — Colour microfilm — Application of the exposure technique to prepare line originals and continuous-tone originals

Название (английский):

ISO 11142:2005

Micrographics — Colour microfilm — Application of the exposure technique to prepare line originals and continuous-tone originals

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 17 июня 2005 г.
Издание:: ISO IS 11142 edition 1 version 1
ICS:: 37.080

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Описание (английский):

ISO 11142:2005 applies the exposure technique to the preparation of line originals and test charts, to their exposure on film including the necessary test originals and to the evaluation of test exposures on colour microfilm. In addition, ISO 11142:2005 applies to the exposure technique and the evaluation of available continuous-tone originals, ready to be microfilmed. ISO 11142:2005 is intended to contribute to a reproducible colour rendition with respect to the original. As far as process control is concerned, the film manufacturer's recommendation should be observed. ISO 11142:2005 does not take into account the influences of projection characteristics of microfilm readers on the subjective impression of projected colour microfilms.

Технические детали

Технический комитет: ISO/TC 171 - Document management applications
SKU: ISO 11142:2005

Abstract

Overview

ISO 11142:2005 - Micrographics - Colour microfilm - Application of the exposure technique to prepare line originals and continuous‑tone originals - provides practical guidance for preparing originals, exposing colour microfilm and evaluating test exposures to achieve reproducible colour rendition. The standard addresses illumination, exposure lenses, filtration, stray‑light control, suitable original materials and inks, and defines test charts and procedures for objective and subjective evaluation of colour microfilm reproductions.

Key topics and requirements

Exposure technique
- Illuminate originals with constant light at a colour temperature of 3 200 K to 3 400 K (colour microfilm is adjusted to ~3 200 K).
- Adjust exposure by exposure time only; do not change lamp current (shutter-equipped cameras required).
- Use colour‑corrected exposure lenses.
- Use correction filters on the light source or conversion filters on the lens to match distribution temperature.
Stray light and setup
- Avoid stray light (e.g., black curtains, non‑reflective surroundings).
- Copy board surfaces should be dark and non‑reflecting.
Original materials and inks
- Originals on uncoloured papers/foils should meet spectral reflectance criteria (guidance given at 457 nm).
- Colour inks and pencils for originals should meet specified colour coordinates and a limited colour difference (ΔE*ab guidance in the standard) to ensure legible, separable reproduction and long‑term stability.
Test charts and evaluation
- Defines Test Chart S (for line originals) and Test Chart H (for continuous‑tone originals), both A4, including colour and grey patches, rulers to determine reduction ratio, and ISO character/resolution elements for sharpness and resolution checks.
- Procedures for visual and densitometric comparison of patch colour, contrast and resolution; resolution can be determined using the quality‑index method.
Process control
- Film‑manufacturer recommendations should be observed for processing; the standard does not account for projection characteristics of microfilm readers.

Applications and who uses it

ISO 11142:2005 is used by:

Archivists, records managers and preservation specialists preparing colour microfilm of documents, drawings and maps
Microfilming technicians and imaging service providers implementing colour microfilming workflows
Libraries, government agencies and engineering firms needing reproducible colour archival copies
Quality control personnel assessing colour rendition and resolution of microfilm reproductions

Benefits include consistent colour reproduction, standardized test methods, and clearer specifications for equipment setup and material selection.

Related standards

Relevant references cited in ISO 11142:2005 include ISO 446, ISO 3334, ISO 3664, ISO 2469, ISO 5‑3 and CIE 15.2 (Colorimetry), which provide complementary guidance on test charts, resolution, viewing conditions and colour measurements.

Overview

Key topics and requirements

Exposure technique
- Illuminate originals with constant light at a colour temperature of 3 200 K to 3 400 K (colour microfilm is adjusted to ~3 200 K).
- Adjust exposure by exposure time only; do not change lamp current (shutter-equipped cameras required).
- Use colour‑corrected exposure lenses.
- Use correction filters on the light source or conversion filters on the lens to match distribution temperature.
Stray light and setup
- Avoid stray light (e.g., black curtains, non‑reflective surroundings).
- Copy board surfaces should be dark and non‑reflecting.
Original materials and inks
- Originals on uncoloured papers/foils should meet spectral reflectance criteria (guidance given at 457 nm).
- Colour inks and pencils for originals should meet specified colour coordinates and a limited colour difference (ΔE*ab guidance in the standard) to ensure legible, separable reproduction and long‑term stability.
Test charts and evaluation
- Defines Test Chart S (for line originals) and Test Chart H (for continuous‑tone originals), both A4, including colour and grey patches, rulers to determine reduction ratio, and ISO character/resolution elements for sharpness and resolution checks.
- Procedures for visual and densitometric comparison of patch colour, contrast and resolution; resolution can be determined using the quality‑index method.
Process control
- Film‑manufacturer recommendations should be observed for processing; the standard does not account for projection characteristics of microfilm readers.

Applications and who uses it

ISO 11142:2005 is used by:

Archivists, records managers and preservation specialists preparing colour microfilm of documents, drawings and maps
Microfilming technicians and imaging service providers implementing colour microfilming workflows
Libraries, government agencies and engineering firms needing reproducible colour archival copies
Quality control personnel assessing colour rendition and resolution of microfilm reproductions

Benefits include consistent colour reproduction, standardized test methods, and clearer specifications for equipment setup and material selection.

ISO 11142:2005 PDF

Технические детали

Abstract

Overview

Key topics and requirements

Applications and who uses it

Related standards

Похожие стандарты

Abstract

Overview

Key topics and requirements

Applications and who uses it

Related standards

Похожие стандарты

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