What is the paper format specification

November 07, 2022

The specification of paper refers to the paper made, trimmed and trimmed to a certain size. In the past, the number of "" open "" (such as 8 or 16 open, etc.) to indicate the size of the paper, now I use the international standard, stipulated to A0, A1, A2, B1, B2...... To indicate the size of the paper. The standard states that the ratio of width (indicated by X) to length (indicated by Y) of paper is X: Y=1: n.

According to the basic area of the paper format, the format specification is divided into A series, B series and C series, the format specification is A0 of the format size of 841mm×1189mm, the area of the format is 1 square meter; B0 has a format size of 1000mm×1414mm and a format area of 2.5 square meters. The format size of C0 is 917mm×1279mm, and the format area is 2.25 square meters. The format specifications of the copy paper are only series A and Series B. If A0 paper is divided into two equal parts along the length, it will become A1 specifications, A1 paper along the length direction, it will become A2 specifications, so open to A8 specifications; B8 paper is also split to B8 size in this way. The format sizes of A0 to A8 and B0 to B8 are listed in the following table. Among them, A3, A4, A5, A6 and B4, B5, B6 are commonly used specifications for copy paper.

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