| 摘要 |
Method for producing a map of a region of the type consisting of an elongate strip of zig-zag folded sheet material, whereby each sheet section is a margin wider between two successive folds than the preceding sheet section and whereby in each case at least on each pair of pages lying against each other in the folded state a map is printed and on the margin thereof not covered by the preceding sections reference symbols are printed, said method comprising: - the choosing of the dimensions of said strip of sheet material and the number of zig-zag folds, - the division, starting from a map to scale, of the region into a number of sub-regions corresponding to the number of pairs of pages available, said division comprising: - the successive division of the map to scale into different numbers of equally wide strips, this for each division such that a minimum surface area of contiguous regions is covered, and for each strip division - the determining of the length of each strip such that each strip comprises precisely the corresponding portion of the region on the map, and - the determining of the ration of the total length of all the strips to the strip width, - the choosing of said strip division whereby this ratio is minimally smaller than the ratio of the total length of all the available pages in transverse direction of the folds to the height thereof, - the selection of a maximum number of groups of adjoining pages, each group having proportionally at least a total length corresponding with the length of a strip of said chosen strip division, - whereby each part of the associated strip corresponding with a pair of pages of a group relates to the sub-region to be added to that pair of pages; - the addition to each pair of pages of a map of a subregion; - the composing to a film of maps of all sub-regions and the margin in accordance with the position of the pages on said strip of sheet material for the purpose of manufacturing printing plates; - the manufacture of printing plates: - the printing of said sheet material on both sides, - the cutting of said strip out of the printed sheet material; and - the zig-zag folding of said strip.
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