When the design is finished, it will be printed. The finished product of printing is inseparable from the selection of paper. It is very important to understand the basic knowledge of printing paper.

全纸张

All paper

平板纸出厂时被裁切成一定的尺寸，供大幅面单张纸印刷机使用，这叫「全张」，全张也可被印刷厂进一步分切成较小的幅面用于各种型号的单张纸印刷机。

Flat paper is cut into a certain size when it leaves the factory for large format sheet fed printing machines. This is called "full sheet". Full sheet can also be further cut into smaller format for various types of sheet fed printing machines.

全张的面积是整个造纸业和印刷业一致采用的特定规格。在我国，使用多的是这几种规格，它们都有约定俗成的名称：

The area of the sheet is a specific specification adopted by the whole paper industry and printing industry. In China, these specifications are most commonly used, and they all have conventional names

纸张开本

Paper format

按国家标准规定生产的纸张称作全开纸，把一张全开纸裁切成面积相等的若干小张，叫多少开数。如全张纸被分为两半，每一半称为「对开」，全张纸被分成 4 份，每一份称为「4开」。如我们熟悉的「16开」就是全开纸分成了16份。

The paper produced according to the national standard is called full open paper. A sheet of full open paper is cut into several small sheets with equal area, which is called the number of open sheets. If the whole sheet is divided into two parts, each half is called "folio", and the whole sheet is divided into four parts, each part is called "folio". As we are familiar with the "16 open" is full open paper divided into 16 parts.

纸的定量

Quantitative analysis of paper

纸张「定量」即每平方米纸的重量，以克为单位。定量的真正意图并不是给纸张称重，而是反映纸张的厚度。定量愈高，纸张愈厚。

Paper "ration" is the weight of paper per square meter, in grams. The real intention of quantification is not to weigh the paper, but to reflect the thickness of the paper. The higher the ration, the thicker the paper.

比如某种铜版纸每平方米的重量是 157 克，它就被称为「157 克铜版纸」。

For example, a certain coated paper weighs 157 grams per square meter, which is called "157 grams coated paper".

常用纸张类型

Common paper types

1. 铜版纸

1. Coated paper

铜版纸是彩色印刷常用的纸张，表面光滑、洁白度高、吸墨着墨性能好，主要用于画册、书刊、DM、海报等。铜版纸还分有光和无光两种，俗称「光铜」和「哑粉」。光铜印刷颜色鲜艳，色彩还原性好，哑粉印刷颜色厚重，显得更高档。常用的定量有 128 克、157 克、200 克、250 克、300克。

Coated paper is the most commonly used paper for color printing, with smooth surface, high whiteness and good ink absorption and inking performance. It is mainly used for picture books, books, DM, posters, etc. There are two kinds of coated paper, light and matte, commonly known as "light copper" and "matte". Bright copper printing color, color reduction is good, dumb powder printing color thick, appears to be more high-grade. The commonly used quantitative methods are 128 g, 157 g, 200 g, 250 g and 300 G.

2. 胶版纸

2. Offset paper

胶版纸是消耗量大的印刷用纸，彩色印刷效果比铜版纸差一些，多用于对颜色要求不高的黑白书刊、教科书等。纸张较薄，定量一般在 60 克至 120 克之间。

Offset paper is the largest consumption of printing paper, color printing effect is worse than coated paper, more used in black and white books, textbooks, etc. The paper is thin, and the ration is generally between 60g and 120g.

3. 白卡纸

3. White cardboard

韧性与硬度高，不易断裂，很像厚的铜版纸，但区别是白卡纸的表面没有无机涂料，吸墨性比铜版纸强，但印刷的颜色不是那么鲜艳。纸张较厚，常用定量有 200 克、220 克、250 克、270 克、300 克、400 克。常用于名片、请柬、明信片、包装等。

High toughness and hardness, not easy to break, much like thick coated paper, but the difference is that there is no inorganic coating on the surface of white cardboard, ink absorption is stronger than coated paper, but the printing color is not so bright. Thick paper, commonly used quantitative 200 g, 220 g, 250 g, 270 g, 300 g, 400 G. Commonly used in business cards, invitation cards, postcards, packaging, etc.

4. 牛皮纸

4. Kraft paper

纸面呈黄褐色，质地坚韧，但颜色不匀，表面粗糙（在某些情况下这恰恰是所需要的效果）。广泛应用于食品包装、档案袋、信封等，也用来做体现古朴文化的书籍封面和宣传单。

The paper is yellowish brown and tough, but uneven in color and rough in surface (which is exactly the effect required in some cases). It is widely used in food packaging, file bags, envelopes, etc. it is also used to make book covers and flyers reflecting ancient culture.

5. 硫酸纸

5. Sulfuric acid paper

原纸经硫酸处理后变得半透明，印刷时可以简约地印一些文字或图案。它常用于高档书籍、画册的衬纸，能够透过它看见扉页上的图文。定量有 75 克、60 克、45 克。

The base paper becomes translucent after sulfuric acid treatment, and some words or patterns can be printed simply. It is often used as the backing paper of high-grade books and picture books, through which you can see the pictures and texts on the title page. There are 75g, 60g and 45g in the ration.

6. 特种纸

6. Special paper

特种纸也叫花式纸，由不同材质的材料制成，是各种特殊用途纸或艺术纸的统称，种类繁多，或有纹理，或有特殊的质感。但价格相对高于普通纸张，多用于时尚前卫的包装、吊牌、书籍封面、名片等，运用得好可让印刷品别具一格

Special paper, also known as fancy paper, is made of different materials. It is a general term for all kinds of special purpose paper or art paper. There are many kinds of paper, either with texture or special texture. But the price is relatively higher than that of ordinary paper. It is mostly used for fashionable and avant-garde packaging, hangtag, book cover, business card and so on. Good use can make the printed matter unique