ISO 732:2000

INTERNATIONAL ISO
STANDARD 732
Fourth edition
2000-11-01
Photography — 120-size and 220-size
films — Dimensions
Photographie — Rouleaux de pellicule formats 120 et 220 — Dimensions
Reference number
ISO 732:2000(E)
©
ISO 2000

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ISO 732:2000(E)
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ii © ISO 2000 – All rights reserved

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ISO 732:2000(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Conditions for measurement of dimensions .2
5 Dimensions.2
6 Identification of exposed rolls.8
7 Package marking .8
Annex A (informative) General information.10
Bibliography.12
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ISO 732:2000(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 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 732 was prepared by Technical Committee ISO/TC 42, Photography.
This fourth edition cancels and replaces the third edition (ISO 732:1991 and ISO 1048:1991), of which it constitutes a
combination and technical revision. A number of technical changes have been made to the figures that describe
product dimensions, as well as to the specifications for paper width and thickness.
Annex A of this International Standard is for information only.
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INTERNATIONAL STANDARD ISO 732:2000(E)
Photography — 120-size and 220-size films — Dimensions
1 Scope
This International Standard provides specifications for
� dimensions of 120-size and 220-size films and of the spools common to both,
� dimensions of the backing paper for 120-size film and the leader and trailer paper for 220-size film, as well as
the placement of the paster tape used for attaching these papers to the films,
� minimum length of film required in front of the leading edge of the first image and behind the trailing edge of
the last image, and
� markings on the backing paper and the trailer-paper for identification of the intended photofinishing process.
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
backing paper
opaque, photographically inert paper, used with 120-size film and imprinted with frame numbers that are legible
through a camera window, providing protection against the danger of light exposure of the film to which it is
attached
NOTE The backing paper provides assistance at the beginning of the wind-up.
3.2
creep
difference in location of the film end relative to the numbers on the backing paper, when wound on the spool,
compared to their respective positions when laid out flat
NOTE The difference exists because the backing paper, wound outside the film strip, assumes a curve of greater
circumference than the film strip for each successive convolution.
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ISO 732:2000(E)
3.3
exposure numbers
consecutive numbers, or sets of numbers, printed on the outside of the backing paper away from the film
NOTE The spacing of images on the film is established by sequential centring of these numbers in the window of older
style cameras.
3.4
leader paper
trailer paper
shorter strips of paper attached to 220-size film (leader at the start of the film and trailer at the end of the film) for
the purposes of light protection and winding, similar to the backing paper for 120-size film
3.5
spool
cylindrical device that has a flange at each end, an axial hole for a pin or spindle, and on which the roll of film and
paper is wound
4 Conditions for measurement of dimensions
The dimensions and tolerances specified in this International Standard apply at the time of manufacture (except
where specifically stated otherwise), measured under atmospheric conditions of (23 � 2) �Cand (50 � 5) % relative
humidity, as specified in ISO 554.
All measuring instrument calibrations should be conducted at a temperature of 20 �C (as specified in ISO 1) and a
relative humidity of 50 %.
5 Dimensions
5.1 120-size
The dimensions for 120-size film and backing paper shall conform to the values shown in Figure 1 and given in
Table 1.
5.1.1 Thickness
The following thickness values shall be maintained:
� backing paper: 0,06 mm minimum and 0,12 mm maximum;
� backing paper plus film: 0,24 mm � 0,04 mm;
� backing paper plus film and paster tape: 0,40 mm � 0,10 mm.
5.1.2 Backing paper width
The maximum backing-paper width shall not exceed 62,90 mm.
The minimum backing-paper width is at the manufacturer’s discretion, but should be sufficient to insure light-
tightness of the undeveloped film.
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ISO 732:2000(E)
Key:
1 Backing paper dimensions 6 Centreline of backing paper
2 Position of free end of film in the spooled roll 7 Leading edge of first exposure
3 Differential or creep 8 Position of attached end of film
4 Trailing edge of last exposure 9 Paster for attaching film to backing paper
5 Film dimensions
Figure 1 — 120-size film and backing paper
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ISO 732:2000(E)
Table 1 — Dimensions of 120-size film and backing paper
Dimensions in millimetres
Dimension
Symbol
Minimum Aim Maximum
A
1 475
B 230
a
C
D
651
E 298 300 302
F
93
G 704
H
246 248 250
I 17,5
b
J 8
K
15,5 19,5 23,5
L 64
M
238 240 242
N 237 257 277
O
13
P
14 18 22
Q 48
R
720
S 205
T
60,7 61,7
U 820 850
V
190
W 15
X
211
Y 981
Z 996
a
Dimension C was specified in the third edition of this International
Standard, but has been judged no longer necessary.
b
The tolerance of the centreline of this number series versus the centreline
of the backing paper is� 3,2 mm.
5.1.3 Paster tape
The shorter dimension of the paster tape (extending in the film’s winding direction) shall not exceed 25 mm, and its
overlap on the film shall not exceed 15 mm.
The longer dimension of the paster tape (across the width of the film and backing paper) shall extend at least to
within 3 mm of both edges of the backing paper.
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ISO 732:2000(E
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