ISO 14546:2000

INTERNATIONAL ISO
STANDARD 14546
First edition
2000-12-15
Photography — Aerial films and spools —
Dimensions
Photographie — Films et bobines aériens — Dimensions
Reference number
©
ISO 2000
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ii © ISO 2000 – All rights reserved

Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Conditions for measurement of dimensions .2
5 Film dimensions.2
6 Film thickness.2
7 Roll lengths .2
8 Leader and trailer requirements.4
9 Film perforations.5
10 Spool dimensions.5
11 Package marking .10
Figures
Figure 1 — Typical splice of leader/trailer and film (see Table 5) .3
Figure 2 — Film perforations (see Table 2) .3
Figure 3 — Aerial film spools (see Tables 6, 7 and 8).6
Tables
Table 1 — Aerial film widths (dimension A) (see Figures 1 and 2) .3
Table 2 — Perforation dimensions for aerial films (see Figures 2) .4
Table 3 — Film thickness.4
Table 4 — Preferred lengths for aerial films in rolls .5
Table 5 — Spliced leader and trailer widths (see Figure 1).5
Table 6 — Dimensions of aerial film spools (see Figure 3).7
Table 7 — Dimensions of spools – Preferred sizes .8
Table 8 — Dimensions of spools – Recognized sizes .9
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 3.
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 International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 14546 was prepared by Technical Committee ISO/TC 42, Photography.
iv © ISO 2000 – All rights reserved

Introduction
This International Standard points out (for the benefit of equipment designers) that dimensions of spools should not
be used for the design of magazine cassette internal clearances. Spools shipped from point to point may have
lateral runout as much as three times those indicated in this International Standard.
INTERNATIONAL STANDARD ISO 14546:2000(E)
Photography — Aerial films and spools — Dimensions
1 Scope
This International Standard specifies dimensions for films, leaders and trailers, perforations where applicable, and
package marking for rolls of photographic film used in aerial applications.
This International Standard also includes the sizes and dimensions of steel or aluminium spools for appropriate
sizes of film.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard 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 1:1975, Standard reference temperature for industrial length measurements.
ISO 554:1976, Standard atmospheres for conditioning and/or testing — Specifications.
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
aerial film
film designed for taking photographs from the air
3.2
aim dimension
preferred dimension at which the manufacturing process should be aimed or designed
3.3
leader
material attached to the leading edge of the roll of film, not intended for recording of images, and usually to assist in
winding
3.4
nominal size
size reference that appears on product labels and in catalogues
3.5
perforations
holes of particular shape and dimensions, punched near one or both edges of the film, to assist with winding
3.6
preferred sizes
industry standard sizes, determined by most frequent user demand (number of units) and product volume (square
metres)
NOTE Designers of new equipment are encouraged to use preferred sizes whenever possible.
3.7
splice
union of two pieces of material, joined to form a single piece
3.8
spool
cylindrical device that has a rim or edge at each end and an axial hole for a pin or spindle, and on which a roll of
film is wound
3.9
trailer
material attached to the trailing edge of the roll of film, not intended for recording of images, and usually to assist in
winding
4 Conditions for measurement of dimensions
The dimensions and tolerances specified in this International Standard shall apply at the time of manufacture
(except where specifically stated otherwise), when equilibrated and measured at atmospheric conditions of
(23 � 2) °Cand(50 � 5) % relative humidity, as specified in ISO 554.
All measuring instrument calibrations shall be conducted at a temperature of 20 °C (as specified in ISO 1) and a
relative humidity of 50 %.
5 Film dimensions
Film dimensions shall be as shown in Figures 1 and 2 and as given in Tables 1 and 2, and apply to film at the time
of cutting and perforating. Dimensions can be altered by a permanent ageing shrinkage and by temporary
shrinkage or swelling due to changes in moisture content or temperature.
Dimensionally stable films are required for aerial products, and any departure from the dimensions specified in this
International Standard shall be no more than � 0,2 % larger than the maximum tolerance, nor less than � 0,3 %
smaller than the minimum tolerance at the time of package opening.
Dimension G (see Figure 2) is the offset of any given side-to-side perforation pair.
6 Film thickness
The film thickness, including support, emulsion and any protective coatings, shall conform to the values given in
Table 3.
7 Roll lengths
� 0,6
Preferred roll lengths and tolerances shall conform to the values given in Table 4. Tolerances are m.
2 © ISO 2000 – All rights reserved
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