一、铜版纸
I. Copperplate Paper
我们所说的铜版纸是在漂白木浆制成的原纸上涂上一层白色化学原料，再经过压光而成。在纸的消费过程中有单面涂布压光和双面涂布压光两种，所以我们的铜版纸有单双面之分。
What we call copperplate paper is made of bleached wood pulp coated with white chemicals and then calendered. In the process of paper consumption, there are two kinds: one-sided coated calendering and two-sided coated calendering, so our copperplate paper can be divided into one-sided and two-sided.
另外压光面分为亮光和亚光两种，在业界中简称光铜和亚粉，也就是打印社称谓的“铜版纸"与“亚粉纸”之分，其实它们都是铜版纸。铜版纸的特性是纸张外表润滑度和洁白度较高，厚薄平均分歧，伸缩性小，复原才能较强，且相对低价。
In addition, the calendering surface is divided into bright and matt, in the industry referred to as smooth copper and sub-powder, that is, printing agency Title "copper plate paper" and "sub-powder paper", in fact, they are copperplate paper. Copper plate paper is characterized by high surface lubricity and whiteness, average difference in thickness, small flexibility, strong recovery ability, and relatively low price.
包装盒
Packing box
亚粉纸在日光下察看，与光铜纸相比，不太反光。用它印刷的图案，虽没有铜版纸颜色鲜艳，但图案比铜版纸更细腻，更。普通亚粉纸会比光铜纸薄并且白，愈加吃墨，并且比拟硬正，不像光铜纸很容易变形，觉得书页不平整的书肯定是光铜纸。只要彩打才会用到亚粉纸，黑白的话就是光铜纸或胶版纸（即再生纸）。
The sub-powder paper looks in the sunlight, which is less reflective than the light copper paper. The pattern printed with it is more delicate and high-end than that printed with copperplate, although there is no bright color of copperplate paper. Ordinary sub-toner paper will be thinner and white than smooth copper paper, more ink-eating, and more rigid, unlike smooth copper paper, it is easy to deform, feel that books with uneven pages must be smooth copper paper. As long as the color printing will use sub-toner paper, black and white is light copper paper or offset paper (that is, recycled paper).
平常我们说的157、185等指的是铜版纸每的克重，市面上有70-350g/m2的铜版纸，习气上300g/m2以上的称为铜版卡。
Usually we say 157, 185, etc. refer to the weight of copperplate paper per square metre. There are 70-350g/m2 copperplate paper on the market, and more than 300g/m2 is called copperplate card.
包装盒
Packing box
二、胶版纸
2. Offset Paper
胶版纸是在漂白木浆制成的原纸外表施胶而成，对油墨吸收平均，纸张外表润滑度、密度和印刷效果比铜版纸差一些。
Offset paper is made by sizing the surface of raw paper made from bleached wood pulp. It absorbs ink equally. The surface lubricity, density and printing effect of offset paper are worse than those of copperplate paper.
包装盒
Packing box
三、特种纸
III. Special Paper
特种纸也叫花式纸，由不同材质的原料制成，属于装饰用纸，纸的外表有的压纹，有的经过特殊处置，由于材质和造纸工艺不同，特种纸品种繁多，颜色十分丰厚，是一些时髦前卫包装、印刷品、书籍、画册为了突出设计效果经常采用的纸张，但价钱普遍高于普通纸张，包装印刷时也要特别留意颜色复原方面问题。
Special paper is also called fancy paper, which is made of different materials. It belongs to decorative paper. Some of the paper's exterior embossed lines and some of them have been treated specially. Because of the different material and paper-making technology, there are many kinds of special paper with abundant colors. It is often used in fashionable avant-garde packaging, printing, books and picture albums to highlight the design effect, but the price is generally higher than that of ordinary paper. Paper, packaging and printing should also pay special attention to color restoration.
除了这纸张之外，还有凸版纸、白卡纸、新闻纸等等。
Besides this paper, there are letterpress, white cardboard, newsprint and so on.
包装盒
Packing box
四、开数
Four, open number
通常说的几开就是把一张正度纸（787mm×1092mm）或者大度纸（889mm×1194mm）几等分。规范未裁切的纸张称为全开，对开就是一分为二，四开就是四等分，以此类推。市场上大局部快印公司选择的是大度纸停止裁切。
Generally speaking, the opening is to divide a positive paper (787mm * 1092mm) or a large paper (889mm * 1194mm) into several equal parts. Standard uncut paper is called full open, opposite is divided into two, four is divided into four, and so on. Most fast printing companies in the market choose to stop cutting large paper.
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