A5 paper and A4 paper size in centimeters to measure how the size ofIn particular, how many centimeters long and how many centimeters wide?
General printing paper is the use of copy paper, copy paper is classified by size, there are several criteria: 1, A; 2, B; 3, K type, K type paper that we often say that the type of paper, only in the domestic only useful K paper. Now generally used A type A type B type paper. However, its classification is such, for example, A5 is two times that of A6, A4 is two times that of A5, A3 is two times that of A4, B4 is two times that of B3 B5 was two times of B4, and type K is a big 1K the paper is divided into two 2K, the 2K paper is divided into half of the 4K, the 4K is divided into half 8K, half of the 8K is divided into 16K, 16K is divided into half of 32K.
According to the basic area of the paper format, the format specification is divided into A series, B series and C series, format specifications for A0 size is 841mm * 1189mm, surface area of 1 square meters; the B0 size is 1000mm * 1414mm, surface area of 2.5 square meters; the C0 size is 917mm * 1279mm area, area of 2.25 square meters; the format specifications of copy paper only uses the A series and B series. The A0 along the length of paper into two parts, will become the A1 specification, the A1 paper along the length direction of the A2, will be open to the A8 specification, so the paper is also based on B8 specifications; the method of open to the B8 specification of.A0 ~ A8 and B0 ~ B8 the sizes listed in the following table. The A3, A4, A5, A6 and B4, B5, B6 and other 7 kinds of specifications for the format specifications commonly used copy paper.
According to the length and width of different classification, A4 specifications: 29.7*21 cm; A5 specifications: 21*14.8 cm; B4 specifications: 35.4*25* cm; B5 specifications: 25.7*18.2 cmThe most commonly used size is A4The size of the paper refers to the paper made after, after finishing cutting, cut to size. The past is how to "open" (for example 8 or 16 open open etc.) to indicate the size of the paper, I adopt the international standards, A0, A1, provided by A2, B1, B2. mark to indicate the picture the standard sizes of paper surface. The paper width (X) and length (Y) ratio is X:Y=1:n.
There are office with a special printing paper, paper size and classification according to the layer, such as 241-1241-2, which represent the 1 layer and 2 layer narrow line printing paper, of course, the 3 layer 4 layer; the commonly used printing line of paper and 381-1381-2.And according to the thickness of the paper to points, such as 60g, 70g, 75g, 85g, 120g and so on, refers to the weight of the paper is multiple, because the density is basically the same, the heavier in weight, the thickness of the paper is thick. Such as printing machine with general speed the paper is about 40g, while the machine is used in the 50-60g paper, which is used in 70-85g copier paper, printer with the general minimum do not use less than 60g thick paper, otherwise it is easy to jam.
