SIST ISO 18928:2014
Imaging materials - Unprocessed photographic films and papers - Storage practices
Imaging materials - Unprocessed photographic films and papers - Storage practices
This International Standard specifies recommended storage conditions for unprocessed photographic materials. It is not applicable to processed films and prints. This International Standard is applicable to black-and-white and colour photographic materials (negative films, positive films, reversal films, positive papers, and X-ray films), as well as to safety films.
Matériaux pour l'image - Films et papiers photographiques non traités - Pratiques de stockage
Upodobitveni materiali - Neprocesirani fotografski filmi in papirji - Shranjevanje
General Information
Relations
Buy Standard
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 18928
Third edition
2013-02-01
Imaging materials — Unprocessed
photographic films and papers —
Storage practices
Matériaux pour l’image — Films et papiers photographiques non
traités — Pratiques de stockage
Reference number
ISO 18928:2013(E)
©
ISO 2013
---------------------- Page: 1 ----------------------
ISO 18928:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 18928:2013(E)
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 committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted 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 document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 18928 was prepared by Technical Committee ISO/TC 42, Photography.
This third edition cancels and replaces the second edition (ISO 18928:2002), of which it constitutes a
minor revision with the following changes:
— Annex A has been removed.
© ISO 2013 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 18928:2013(E)
Introduction
International Standards have been written specifying the recommended practices for the storage of
processed safety photographic film (ISO 18911), processed photographic reflection prints (ISO 18920),
processed photographic plates (ISO 18918), and the specifications for safety film (ISO 18906).
This International Standard is concerned with the storage of unprocessed photographic materials.
While many of the recommendations for unprocessed and processed storage are very similar, there
are some important differences. These include the very beneficial effects of low temperature and the
harmful effects of adverse storage and radiation.
iv © ISO 2013 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 18928:2013(E)
Imaging materials — Unprocessed photographic films and
papers — Storage practices
1 Scope
This International Standard specifies recommended storage conditions for unprocessed photographic
materials. It is not applicable to processed films and prints.
This International Standard is applicable to black-and-white and colour photographic materials (negative
films, positive films, reversal films, positive papers, and X-ray films), as well as to safety films.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
raw photographic material
photographic material that has not been exposed to actinic radiation and has not been processed
3 Storage conditions
3.1 General
The photographic properties of imaging materials change during ageing. These changes result from
high temperatures and high relative humidities and may also be influenced by plastics, papers, solvents,
lacquers, varnishes, gases (see 3.4), and extraneous radiation (see 3.5). Frequent temperature changes
may also have adverse effects.
Changes caused by unfavourable storage conditions may be much greater than those due to variations
in original manufacture. It is important to comply with the manufacturer’s recommended storage
conditions and, where given, to an expiration date.
Films and papers should be exposed and processed as soon as possible after the original package has
been opened. Opened packages should be resealed under recommended conditions for further storage.
3.2 Relative humidity
Photographic material should generally be kept in equilibrium with 40 % to 60 % relative humidity
(RH). Containers shall be kept sealed until the material is used.
Films and papers are not usually stored for long periods between exposing and processing.
Production schedules, customer needs, latent image fading or growth, etc., are important factors
here. Furthermore, vesicular, diazo, thermally processed silver, and electrographic type materials are
normally processed immediately.
If conventional sheet films or papers are not to be processed immediately, they may be stored in
commercially available light-tight “paper safes” or in the manufacturer’s original container.
The relative humidity of the storage area shall be maintained below 65 % because higher humidities can
damage containers (e.g. rust), cause labels, tapes and cartons to deteriorate, and encourage the growth
of fungi. It can also induce adhesion (blocking) between adjacent laps or layers.
Humidities below 30 % can make film and paper temporarily brittle and lead to unacceptable curl and
possible emulsion cracking.
© ISO 2013 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 18928:2013(E)
3.3 Temperature
Recommended temperatures during storage depend on the kind of photographic material and on the
duration of storage. General guidelines are given in Table 1. In all cases, the information provided by the
manufacturer shall be followed.
When storing for less than a month, photographic materials may be kept at approximately 25 °C.
Most manufacturers recommend a maximum temperature of 13 °C for longer periods. Manufacturers’
expiration dates can be extended by storing at still lower temperatures. Note that infrared-sensitive
films shall be stored at –18 °C.
If films or papers are to be kept for several days or more between exposing and processing, many
of the considerations in Clause 3 apply. Storage temperatures should be the same for exposed as for
unexposed material.
Table 1 — Storage temperature for films and papers
S
...
SLOVENSKI STANDARD
SIST ISO 18928:2014
01-marec-2014
1DGRPHãþD
SIST ISO 18928:2011
Upodobitveni materiali - Neprocesirani fotografski filmi in papirji - Shranjevanje
Imaging materials - Unprocessed photographic films and papers - Storage practices
Matériaux pour l'image - Films et papiers photographiques non traités - Pratiques de
stockage
Ta slovenski standard je istoveten z: ISO 18928:2013
ICS:
37.040.20 )RWRJUDIVNLSDSLUILOPLLQ Photographic paper, films
IRWRJUDIVNHSORãþH)LOPVNL and cartridges
]YLWNL
SIST ISO 18928:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST ISO 18928:2014
---------------------- Page: 2 ----------------------
SIST ISO 18928:2014
INTERNATIONAL ISO
STANDARD 18928
Third edition
2013-02-01
Imaging materials — Unprocessed
photographic films and papers —
Storage practices
Matériaux pour l’image — Films et papiers photographiques non
traités — Pratiques de stockage
Reference number
ISO 18928:2013(E)
©
ISO 2013
---------------------- Page: 3 ----------------------
SIST ISO 18928:2014
ISO 18928:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 18928:2014
ISO 18928:2013(E)
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 committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted 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 document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 18928 was prepared by Technical Committee ISO/TC 42, Photography.
This third edition cancels and replaces the second edition (ISO 18928:2002), of which it constitutes a
minor revision with the following changes:
— Annex A has been removed.
© ISO 2013 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 18928:2014
ISO 18928:2013(E)
Introduction
International Standards have been written specifying the recommended practices for the storage of
processed safety photographic film (ISO 18911), processed photographic reflection prints (ISO 18920),
processed photographic plates (ISO 18918), and the specifications for safety film (ISO 18906).
This International Standard is concerned with the storage of unprocessed photographic materials.
While many of the recommendations for unprocessed and processed storage are very similar, there
are some important differences. These include the very beneficial effects of low temperature and the
harmful effects of adverse storage and radiation.
iv © ISO 2013 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 18928:2014
INTERNATIONAL STANDARD ISO 18928:2013(E)
Imaging materials — Unprocessed photographic films and
papers — Storage practices
1 Scope
This International Standard specifies recommended storage conditions for unprocessed photographic
materials. It is not applicable to processed films and prints.
This International Standard is applicable to black-and-white and colour photographic materials (negative
films, positive films, reversal films, positive papers, and X-ray films), as well as to safety films.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
raw photographic material
photographic material that has not been exposed to actinic radiation and has not been processed
3 Storage conditions
3.1 General
The photographic properties of imaging materials change during ageing. These changes result from
high temperatures and high relative humidities and may also be influenced by plastics, papers, solvents,
lacquers, varnishes, gases (see 3.4), and extraneous radiation (see 3.5). Frequent temperature changes
may also have adverse effects.
Changes caused by unfavourable storage conditions may be much greater than those due to variations
in original manufacture. It is important to comply with the manufacturer’s recommended storage
conditions and, where given, to an expiration date.
Films and papers should be exposed and processed as soon as possible after the original package has
been opened. Opened packages should be resealed under recommended conditions for further storage.
3.2 Relative humidity
Photographic material should generally be kept in equilibrium with 40 % to 60 % relative humidity
(RH). Containers shall be kept sealed until the material is used.
Films and papers are not usually stored for long periods between exposing and processing.
Production schedules, customer needs, latent image fading or growth, etc., are important factors
here. Furthermore, vesicular, diazo, thermally processed silver, and electrographic type materials are
normally processed immediately.
If conventional sheet films or papers are not to be processed immediately, they may be stored in
commercially available light-tight “paper safes” or in the manufacturer’s original container.
The relative humidity of the storage area shall be maintained below 65 % because higher humidities can
damage containers (e.g. rust), cause labels, tapes and cartons to deteriorate, and encourage the growth
of fungi. It can also induce adhesion (blocking) between adjacent laps or layers.
Humidities below 30 % can make film and paper temporarily brittle and lead to unacceptable curl and
possible emulsion cracking.
© ISO 2013 – All rights reserved 1
---------------------- Page: 7 ----------------------
SIST ISO 18928:2014
ISO 18928:2013(E)
3.3 Temperature
Recommended temperatures during storage depend on the kind of photographic material and on the
duration of storage. General guidelines are given in Table 1. In all cases, the information provided by the
manufacturer shall be followed.
When storing for less than a month, photographic materials may be kept at approximately 25 °C.
Most manufa
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.