ISO 5126:1980

Micrographics — Computer output microfiche (COM) — Microfiche A6

Micrographie — Composition en sortie d'ordinateur sur microforme (COM) — Microfiche A6

General Information

• Status: Withdrawn
• Publication Date: 31-Oct-1980
• Withdrawal Date: 31-Oct-1980
• ICS: 37.080 - Document imaging applications
• Technical Committee: ISO/TC 171 - Document management applications
• Drafting Committee: ISO/TC 171 - Document management applications
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 13-Apr-1994

Relations

• Revised: ISO 9923:1994 - Micrographics — Transparent A6 microfiche — Image arrangements
• Effective Date: 15-Apr-2008

Standards Content (Sample)

International Standard @ 5126
Micrographics Micrographics - - Computer Computer output output microfiche microfiche (COM) (COM) - -
Microfiche Microfiche A6 A6
Micrographie Micrographie - - Composition Composition en en sortie sortie d'ordinateur d'ordinateur sur sur micro micro forme forme (COMj (COM) -A6 -A6 Microfiche Microfiche
Second Second edition edition - - 1980-11-01 1980-11-01
gi UDC ï78.142:681.3
>
1 Price based on 14 pages

---------------------- Page: 1 ----------------------
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards institutes (is0 member bodies). The work of developing Inter-
national Standards is carried out through IS0 technical committees. Every member
a subject for which a technical committee has been set up has the
e
right to be represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 5126 was developed by Technical Committee ISO/TC 171,
Micrographics.
This second edition was submitted directly to the IS0 Council, in accordance with
clause 5.10.1 of part 1 of the Directives for the technical work of EO. It cancels and
replaces the first edition (i.e. IS0 5126-19781, which had been approved by the
member bodies of the following countries :
Belgium Ireland South Africa, Rep. of
Canada Italy Sweden
Chile Japan Switzerland
Czechoslovakia Mexico Turkey
Finland Netherlands United Kingdom
France New Zealand USA
R. Norway Yugoslavia
Germany, F.
India Poland
Iran Romania
The member bodies of the following countries had expressed disapproval of the docu-
ment on technical grounds :
Denmark
USSR
0 International Organization for Standardization, 12180
Printed in Switzerland

---------------------- Page: 2 ----------------------
INTERNATIONAL STANDARD IS0 5126-1980 (E)
Micrographics - Computer output microfiche (COMI
Microfiche A6
1 Scope and field of application
3 Physical characteristics
This International Standard specifies the characteristics of
3.1 Sheet size
transparent A6 size computer output microfiche at reductions
of 1 : 24 and 1 : 48. Uniform division formats with frame sizes
The external dimensions of the microfiche shall be a rectangle
are provided for A4 and 279 mm x 355 mm (11 in x 14 in)
of 105 mm x 148 mm.1)
equivalent page sizes at each reduction. This International
Standard does not cover computer output microfilm in 16 mm
When tolerances are specified for the distribution microfiche
or 35 mm roll formats or graphics, which will be the subjects of
they will apply immediately after processing. The
separate standards. This International Standard also does not
measurements shall be made when the film has come to
cover computer output microfiche at a reduction of 1 : 42,
equilibrium at 23 k 2 OC and 50 & 5 % relative humidity, Size
which is in use but is not compatible with reductions of 1 : 24,
variations due to raw stock slitting and processing should be
most new installations using 1 : 48 reduction; nor does it cover
considered in determining the tolerances. Additional size
microfiche of source documents, which is the subject of
changes may occur during ageing, especially for films on
IS0 2707 and IS0 2708. Depending on requirements, the
cellulose ester supports. (See annex A, clause A.2.) Temporary
microfiche may be a negative or positive.
size changes due to temperature and humidity changes are
described in annex A, clause A.3.
3.2 Thickness
2 References
The gross thickness ranges of microfiche exclusive of the
IS0 543, Cinematography - Motion-picture safety film -
heading area backing, if any, shall be the following :
Definition, testing and marking.
-
cellulose acetate film : 0,13 mm to 0'23 mm;
IS0 107312, Alphanumeric character sets for optical recog-
nition - Part 2 - Character set OCR-B - Shapes and dimen- -
polyester base film : 0,lO mm to 023 mm.
sions of the printed image.
3.3 Heading area backing
IS0 2707, Microcopying - Transparent A6 size microfiche of
uniform division - Image arrangements No. I and No. 2.
An opaque or translucent backing21 for the heading area is op-
tional. If a heading area backing is used, it shall not increase the
IS0 2708, Microcopying - Transparent A6 size microfiche of
thickness of the fiche by more than 0,Ol mm.
variabie division - Image arrangements A and B.
IS0 2784, Continuous forms used for information processing 3.4 Identification of sensitized side
- Sizes and sprocket feed holes.
To facilitate microfiche-to-microfiche copying, a notch or a cor-
IS0 2803, Photography - Silver-gelatin type microfilms - ner cut may be used to identifv the sensitized layer of the
Processing and storage for archival purposes. microfiche.
1)
IS0 6148, Photography - Film [silver-gelatin and non-silver gelatin types) for micrographic uses - Dimensions of she and roll material (in
preparation) will provide manufacturing tolerances for raw film. Until IS0 6148 is published, the manufacturing tolerances for raw film shall be
O
O mm x 14 mm.
'O5 -0,25
(See annex A for more information.)
2) The use of such backing restricts further duplication.
1

---------------------- Page: 3 ----------------------
IS0 5126-1980 (E)
4.2 Microimage placement and orientation
When a notch is used, it shall be made in the shorter side of the
sheet, near the appropriate corner. The notch may be of any
Microimages in arrangements 2, 3, 4 and 5 shall be positioned
shape, but it shall not penetrate more than 1,6 mm inward from
within the appropriate grid pattern shown in figures 1,2, 3 and
the edge of the microfiche.
4. All measurements shall be made from the bottom edge and
the bottom left-hand corner of the fiche as reference. When the
When a corner cut is used, it shall be made in the appropriate
corner of the heading area only. The cut shall extend a nominal fiche is held so that the heading is right-reading and upright,
microimages shall always be right-reading and upright.
6 mm along the longer side of the microfiche and a nominal
9 mm along the shorter side of the microfiche.
The sensitized side shall be identified by one of the following
4.3 Effective reduction
methods :
Image arrangements No. 2 and No. 3 shall have an effective
Method A - When a sheet of raw film or a microfiche is held
reduction of 1 : 23 to 1 : 25.5.
with the long sides in a horizontal position and the notch in the
lower right-hand corner, or the corner cut is in the upper left-
Image arrangements No. 4 and No. 5 shall have an effective
hand corner, the sensitized side will be towards the observer.
reduction of 1 : 47 to 1 : 50.
Method B - When a sheet of raw film or a microfiche is held
with the long sides in a vertical position and the notch or corner
4.4 Heading area
cut is in the upper right-hand corner, the sensitized side will be
towards the observer.
The heading area above the image area of each microfiche shall
be reserved for identification references.
3.5 Corner rounding
All characters in the heading area shall be upright and right-
reading. All entries shall be readable without magnification.
The corners of the microfiche may be rounded, with the excep-
tion of the corner which has been subjected to a corner cut (see
The minimum areas reserved for the heading are indicated in
3.4). When corners are rounded, the process shall not remove
figures 1, 2, 3 and 4 by shading.
more than 3 mm of either of the two edges forming the corner.
If additional heading space is required, the area allocated to the
3.6 Measurements involving cut-off corners
next entire row or rows of images shall be used. When more
than one row is used for the heading, the frame identification,
Where segments of an edge have been removed by corner
as specified in 4.7, shall remain unchanged. The heading area
rounding or corner cuts, a straight line extending the remainder
constitutes the top of the microfiche. The minimum area
of the edge in the relevant direction shall constitute the basis
reserved for the heading shall be used only for heading and
for measuring dimensions and spacing.
identification purposes on all microfiche, and not for
microimages.
3.7 Safety film
The film used shall comply with IS0 543.
4.5 Pagination (see annex BI
4 Frame size and format When the microfiche is held so that the heading is upright and
right-reading, the first microimage shall be placed in the top left
4.1 General layout
corner of the grid area. Succeeding frames shall appear either
in sequence downward from left to right from column to col-
Table 1 specifies the arrangements that shall be used for com-
umn (vertical pagination), or in sequence from left to right and
puter output microfiche.
downward from row to row (horizontal pagination).
Table I - Microfiche formats"
I I I
Reduction Co,umns
Equivalent document size
Arrangement Rows
(see 4.3)
A4 1 : 24 14 7
279 mm X 355 mm 1 : 24 7
I
(11 in X 14in)
A4 1 : 48
15
I
I 28
No. 5 279 mm X 355 mm 1 : 48 18 15
(11 in X 14in)
* Arrangement No. 1 of IS0 2707 IS not applicable to COM.
Frame size and placement of images in arrangements2,3,4 and 5 shall be in accordance with figure 1,2,3 or 4 respectively.
2

---------------------- Page: 4 ----------------------
IS0 5126-1980 (E)
4.6 Trailer microfiche identification
9 Quality requirements
When trailer microfiche are used, each microfiche in the set, in-
9.1 Legibility of first generation microfiche
cluding the first one, shall be identified sequentially. Where
practicable the last microfiche in the set should be identified as
9.1.1 Requirements
the last one.
A square array of 12 lines, of at least 20 characters and symbols
4.7 Frame identification
presented in a random sequence, and including all characters
and symbols capable of being generated by the COM, shall be
Where co-ordinate identification is used for location of images,
recorded in the centre and each corner of the full frame size.
alphabetic letters shall be used to identify rows. Starting at the
Each of the five arrays should utilize different random number
top row below the heading area, the first row shall be A, the
sequences. (See annex C for five different random number
second row 6, etc., as indicated in figures 1, 2, 3 and 4.
groups using 63 characters and symbols.) The test sample
should contain a block of characters representative of each
Columns shall be identified by numerals starting at the left. The
style of font used.
first column shall be 1, the second 2, and so on. The indication
of co-ordinates on the microfiche is optional. If co-ordinates are
The test samples should contain information compacted
shown on the microfiche, they shall be located in the margins
horizontally and vertically, representative of the maximum in-
(see figures 1,2,3 and 4) or in the lower portion of the heading
formation congestion anticipated for use. Each character or
area.')
symbol so generated shall be identifiable without error when
viewed on a paper print or reader screen.
5 Automation requirements : cutting mark
9.1.2 Test method
Each microfiche may carry a cutting mark to provide for
automatic cutting of processed roll film into microfiche. This
A printer or reader magnification of not less than 12 X shall be
cutting mark shall be 3,O mm x 3,O mm square, and the cen-
used so that the smallest size upper case character height will
tre of the square shall be located 32,O i 0,2 mm from the left
be a maximum of 1,6 mm (0.063 in). The space between suc-
edge of the microfiche, with the bottom edge of the square
cessive lines of characters in the array shall be no greater than
within 0,2 mm of the bottom edge of the microfiche.
7/8 the height of the capital lerter E. Alphanumeric COMs with
a character height between 2,28 and 2,54 mm (0.09 in and
0.1 in) would use a maximum reader or print magnification to
6 index frame
determine system image quality of 16 X for nominal 1 : 24
reduction and 32 X for nominal 1 : 48 reduction COM images.
If an index to the microfiche is to be provided, the last
Viewing shall be in an ambient illumination of approx-
microimage of the index shall be placed at the bottom right cor-
imately 540 Ix.
ner of the grid area. Preceding index frames shall appear in
reverse sequence subtracting from the allotted format.
Good quality-control practice dictates that this test be per-
formed on a routine basis.
7 Information density (character packing)
The dimensions of the computer output microfilm (COM)
9.2 Legibility of reproduction copies
images are based on effective reductions. The character pack-
ing density of an equivalent paper document is assumed to be
The subsequent generation which serves as the user copy shall
60 characters per 6'45 cm2 (1 in21, corresponding to a
meet the same legibility standard as that described for the first
character pitch of 2,54 mm (0.1 in) and a line spacing of
generation.
4,23 mm (0,16 in).
8 Alphanumeric characters
9.3 Curl and bow
T
...