§ 17
How many leaf signatures are needed, and how many pages will be blank?
Answer: A printed product that is folded and stapled or glued consists of whole folded sheets. A sheet folded once gives 4 pages, twice 8, three times 16 and four times 32 pages. The calculator finds how many folded sheets the page count needs, what the page count becomes after rounding, how many blank pages are created, and how many pages are left for a smaller extra sheet if you want to avoid the blank pages.
Sider pr. falsark = 2 × 2^(antal fals): 1 fals = 4 sider, 2 fals = 8, 3 fals = 16, 4 fals = 32
Falsark = sidetal ÷ sider pr. ark, rundet op
Blanke sider = falsark × sider pr. ark − sidetal
Remaining pages after the full sheets can go on a smaller sheet (e.g. 4 or 8 pages) if the remainder page count divides into 4
| Symbol | Meaning | Unit |
|---|---|---|
| sider | Printed matter page count (including cover if it is printed with) | sider |
| sider_pr_ark | Pages per press sheet | |
| = | Total folded sheets | falsark |
| = | Page count after rounding | sider |
| = | Blank pages | sider |
| = | Whole signatures | falsark |
| = | Pages left for a smaller extra sheet | sider |
Does not apply when
The calculator's own default values inserted. The figures are calculated with exactly the formula the tool uses.
Substituted
Giver
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Når en kunde bestiller et hæfte, en katalog eller en bog, skal sidetallet passe med de falsark, der kan køres. Beregneren viser, hvor mange falsark sidetallet giver, hvor mange sider der bliver blanke, og hvor mange sider der er tilbage til et mindre ark.
En byggemarkedskæde bestiller et katalog på 52 sider, der skal trykkes i 16-siders falsark.
It means: Med 4 falsark bliver det 64 pages, så 12 pages er blanke. Du kan også køre 3 falsark og lægge de sidste 4 pages på et lille 4-siders ark.
En forening har lavet et medlemsblad på 30 sider til sadelhæftning, hvor hvert ark giver 4 sider.
It means: Bladet skal bruge 8 falsark og ender på 32 pages. Der er 2 pages blanke, så bed foreningen om at lave en annonce eller en notesside.
En roman på 240 sider trykkes i 32-siders falsark.
It means: Romanen kræver 8 falsark, og 16 pages bliver blanke. Alternativt køres 7 falsark og resten, 16 pages, på et 16-siders ark.
Et ark, der falses tre gange, giver 16 sider. Et sidetal, der går op i 16, giver ingen blanke sider i offset.
Sidetallet efter afrunding minus de blanke sider skal give kundens sidetal.