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In printing, 2-up, 3-up, or more generally N-up refers to a page layout strategy in which multiple pre-rendered pages are composited onto a single page; achieved by reduction in size, possible rotations, and subsequent arrangement in a grid pattern. The primary purpose of N-up printing is to reduce the number of pages that a printed work would otherwise require without having to re-edit, index, or flow the layout of the individual pages of an existing work.〔(Print multiple pages per sheet | Acrobat, Reader ) "Printing multiple pages per sheet is also called n-up printing (such as 2-up or 6-up)"〕〔(Printing Lingo: What does “Up” mean…as in 2-Up, 3-Up, Multiple-Up? )〕〔(Kodak EasyShare printer dock series 3 — User's Guide )〕 N-up printing should not be confused with multiple column layout or the pre-press imposition process. The general availability of N-up printing in computerized output was stimulated with the introduction of page layout languages such as PostScript, and later PDF, which made such page compositions very easy; as exemplified by the ''GNU Enscript'' program as early as 1995. The Compact Oxford English Dictionary is notable for using N-up printing as a means to physically compress the large multi-volume dictionary into a much smaller and thus more accessible work. The first Compact OED edition of 1971 used a 4-up layout (4 original pages per resulting page); while the second edition of 1991 used a 9-up format, giving a total of 18 original pages being visible when the book is opened so both the recto and verso pages are displayed. Though the 9-up format, especially considering each original page used a 3-column layout, required such a reduction in font size that it necessitated the use of a magnifying lens to be legible. == See also == * Duplex printing 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「N-up」の詳細全文を読む スポンサード リンク
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