ISO 14648-2:2001

INTERNATIONAL ISO
STANDARD 14648-2
First edition
2001-12-01
Micrographics — Quality control of COM
recorders that generate images using
a single internal display system —
Part 2:
Method of use
Micrographie — Contrôle de la qualité des microformes produites sur
un système électronique (COM) de génération d’image adressage
de points —
Partie 2: Méthode d'utilisation

Reference number
©
ISO 2001
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ii © ISO 2001 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
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Commission (IEC) on all matters of electrotechnical standardization.
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by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this part of ISO 14648 may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 14648-2 was prepared by Technical Committee ISO/TC 171, Document imaging applications, Subcommittee
SC 1, Quality.
ISO 14648 consists of the following parts, under the general title Micrographics — Quality control of COM recorders
that generate images using a single internal display system:
— Part 1: Characteristics of the software test target
— Part 2: Method of use
Introduction
This part of ISO 14648 specifies methods for using the test targets specified in ISO 14648-1 for initial Computer
Output Microfilm (COM) recorder testing, to establish a quality reference and for periodic testing of COM image
quality.
iv © ISO 2001 – All rights reserved

INTERNATIONAL STANDARD ISO 14648-2:2001(E)

Micrographics — Quality control of COM recorders that generate
images using a single internal display system —
Part 2:
Method of use
1 Scope
This part of ISO 14648 specifies methods for using the software test targets specified in ISO 14648-1.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 14648. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 14648 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
registers of currently valid International Standards.
ISO 5-2:1991, Photography — Density measurements — Part 2: Geometric conditions for transmission density
ISO 5-3:1995, Photography — Density measurements — Part 3: Spectral conditions
ISO 6196-1:1993, Micrographics — Vocabulary — Part 1: General terms
ISO 6196-3:1997, Micrographics — Vocabulary — Part 3: Film processing
ISO 6196-5:1987, Micrographics — Vocabulary — Part 5: Quality of images, legibility, inspection
ISO 6196-6:1992, Micrographics — Vocabulary — Part 6: Equipment
ISO 6196-7:1992, Micrographics — Vocabulary — Part 7: Computer micrographics
ISO 8514-1:2000, Micrographics — Alphanumeric computer output microforms — Quality control — Part 1:
Characteristics of the test slide and test data
ISO 8514-2:2000, Micrographics — Alphanumeric computer output microforms — Quality control — Part 2:
Method
3 Terms and definitions
For the purposes of this part of ISO 14648, the terms and definitions given in ISO 6196 and ISO 14648-1 apply.
4 Outline of the method
This test method may be used initially to establish the quality of the images recorded by a COM system. The
results of the initial test may be used either to establish an initial quality reference for the system to which future
output can be compared or the initial output may indicate certain repairs or adjustments that should be made to
bring the system up to the required specification. The primary use of the target should be to establish a working
quality reference and then to use it as a means to monitor consistency of performance on a periodic basis. If there
are several COM recorder systems in use, the test target also provides a method of checking that equivalent
performance is being obtained from each recorder.
The user application may demand that the best image quality be required in the duplicates rather than the master
microform. In this case, the optimum exposure level is determined by inspecting the duplicate microform images
made on a duplicator that has been properly calibrated and adjusted.
5 Test procedure
5.1 General
The following procedure first establishes the optimum image obtainable from the COM recorder system by
optimizing the exposure setting. Various parameters characterizing the COM recorder system performance can
then be established by measurement and observation of the output microform image quality.
5.2 Establishing the COM recorder imaging quality parameters
5.2.1 COM system set-up
Ensure that the COM system is functioning properly before starting these tests.
The system shall be warmed up in accordance with the manufacturer's recommendations. Film known to be
capable of producing microimages of suitable quality shall be used. The processor shall be up to temperature and,
where appropriate fresh chemicals shall be used, shall be warmed to the specified temperature.
5.2.2 Test grid
Generate a pattern of characters as specified in ISO 8514-1 and check that the image produced is in accordance
with ISO 8514-2.
5.2.3 Optimizing the exposure setting
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