BS 6313:1982 download.35 mm microcopying of Serials.
1 Scope
BS 6313 specifies requirements for the preparation, microfilming and storage of serials (whether black-and-white or in colour or both) on 35 mm black-and-white silver-halide roll film, to be used for purposes of preservation or distribution in libraries and similar institutions. The requirements include the provision of adequate bibliographic references and procedures for maintaining and checking the reproducibility of the microfilm images of the first, second and third generation.
The standard applies to planetary filming only. The standard does not apply to the microfilming of newspapers, which is the subject of BS 5847. NOTE The titles of the publications referred to in BS 6313 are listed on the inside back cover.
2 Definitions
For the purposes of BS 6313 the following definitions apply.
2.1
eye-legible
readable without magnification
2.2
serial
a publication, other than a newspaper, in hard copy, issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. Serials include periodicals; annuals (reports, yearbooks, directories etc.); the journals, memoirs, proceedings, transactions etc., of societies; numbered monographic series (a group of separate items related to one another by the fact that each item bears, in addition to its own title proper, a collective title applying to the group as a whole). The term Therial” does not cover multi-volume works to be completed within a fixed period
2.3
target
a document containing technical or bibliographic information about the microfilmed serial for reproduction on one of the frames preceding or following the serial proper
3 Arrangement of file
3.1 Sequence of filming. Serials shall be recorded in chronological order according to the Gregorian calendar. Numbered or lettered sections shall be filmed in numerical or alphabetical order, followed by unnumbered sections such as supplements, magazine sections, comics. Indexes shall be filmed immediately after the volume or issue to which they apply.
4.2 Image area. The dimensions of the image area (see Figure 1) on 35 mm unperforated film shall be as follows:
width (A) 33 mm maximum
space between adjacent items 2 mm maximum
(whether images or targets) (C)
edge margins (D) 1 mm minimum
The length (B) shall be the minimum required to accommodate the material being filmed.
4.3 Sequence of images. The images shall be positioned to allow the normal progression of pages in all scripts, so that the sequence of images is correct whether the script reads from left to right, Western style, or from right to left, Oriental style (see Figure 2).
4.4 Inserts and fold-outs. Material, such as inserts and fold-outs, which is no larger than the double spread of the serial and in which type size and legibility are similar to those of the main text, shall be filmed at the same reduction ratio as the main text. If the type size is smaller and the legibility significantly inferior to that of the main text, a lower reduction ratio shall he used. If the materiaL is too large to meet the requirements of 4.2, it shall be filmed in sections, working from left to right and from top to bottom, unless in Oriental style. An overlap of at least 25 mm shall he provided between adjacent sections, and the reduction ratio shall be the lowest that will wholly accommodate a complete section including overlaps.
5 Microfilm
5.1 Film base. The film base shall be 35 mm unperforated safety stock as specified in
BS 5550-5.1.1.
5.2 Thickness. The thickness of the film of the first generation, including support, emulsion and any protective coating, shall he within the ranges:
a) 0.12 mm to 0,15 mm for cellulose ester base; b) 0.06 mm to 015 mm for polyester base.
Working equipment shall be compatible with the film thickness.
NOTE Because films vary in thickness, a reel which contains a comparatively thick film may appear to have a longer film than a reel which contains a thinner film, although both films are the same length.
5.3 Width. The width of the film, unprocessed and processed, shall comply with the requirements of
BS 1371.
c) a statement of the reduction ratio used, or for multi-format serials, the first reduction ratio:
d) a statement of whether the original is in black-and-white or colour or both.
The technical target shall be followed by one blank frame.
7.8 Reel-number target. The reel-number target shall contain a statement of the number of the reel in eye-legible lettering, “Reel no “or “One reel only.
7.9 Identification target. The identification target shall give the following essential information in eye-legible lettering:
a) title of the serial in the (major) language of the text:
b) country and place of publication in the (major) language of the text;
c) number and date of the first and last volumes or issues of the run, or of the specific volume or issue filmed:
d) ISSN (see ISO 3297).
NOTE For optional information see Appendix A.
7.10 Film target. The film target shall give the following information about the contents of the reel:
a) title of the serial in eye-legible lettering; b) number and date of the volumes or issues on the reel in eye-legible lettering;
c) if necessary, a note stating that the original is incomplete (see also 7.13.3):
d) if necessary, details and dates of change of title.
10.2 Replacement of faulty film. If a page is not properly filmed it shall be refilmed with as many pages on either side of it as are needed to allow the film to be spliced without defacing any images. The remade film shall be inspected and then spliced into the negative to replace the faulty film.
10.3 Splices. The number of splices shall be kept to the minimum. Splices shall be added to the master negative before any duplicate copies are printed. Splices of pressure-sensitive adhesive tape shall not be used unless the adhesive is of a quality that will not damage the long-term keeping qualities of the film.
NOTE Heat-weld or ultrasonic splices are generally recommended.
11 Copies
11.1 Intermediate copies. The background density of silver, second-generation negative-appearing microfilm, used for intermediate copies, shall comply with BS 5976.
11.2 Distribution copies. Archival microfilms intended for distribution (2N or 2P, 3N or 3P etc.) shall be made on a film printer with film stock that complies with BS 5699. Exposed distribution film shall be processed as specified in clause 8. Archival microfilm shall comply with the requirements of BS 5976. Distribution copies shall have a leader and trailer each at least 450 mm long. They shall not be spliced.
11.3 Reels. To avoid overloading the reel, the diameter of the wound film on the reel shall be not nearer than 3 mm to the outer edge of the reel, and cinching the film shall be avoided. Film shall be wound so that it is right-reading with the start target at the outer end.
12 Storage
Film shall be stored as recommended in BS 1153.
13 Container
The container shall adequately identify its contents. The information given on it shall include:
a) title of the serial;
b) country and place of publication of the serial;
c) dates of volumes and issues microfilmed:
d) reel number, if the reel is part of a set. Space shall be left on the container for the user’s own information.