Both sides of the rough paper for calligraphy practice can be used.

One view is that the rough side of the rough paper should be used, the so-called rough side.

The reason is that the rough side of the rough edge paper will be more prone to ink bleeding, while the penetration effect of glossy ink will be far less than the rough side. In addition, when writing, there is a feeling of competition between paper and pen, and it is more felt when making lifting and pressing movements. In other words, the friction between the rough side and the brush is greater, making it easier to reflect the writing power.

Another view is that the smooth side should be used, that is, the glossy side. Book friends who hold this view mainly think that the raw edge paper itself is already very rough, so the smooth side should be used.

Classification of paper

1. According to the production method, it is divided into handmade paper and machine-made paper.

Handmade paper is mainly made by hand, using a curtain net frame and manually fishing it out one by one. It has a soft texture and strong water absorption, and is suitable for ink writing, painting and printing, such as Chinese rice paper. Machine-made paper refers to the general term for paper produced by mechanization, such as printing paper, packaging paper, etc.

2. According to the thickness and weight of the paper, it is divided into paper and cardboard. There is no strict distinction between the two. Generally, those weighing less than 200g per square meter are called paper, and those weighing more than 200g are called cardboard. Cardboard accounts for about 40-50% of the total paper production and is mainly used for commodity packaging, such as box cardboard, packaging cardboard, etc. Internationally, paper and cardboard are usually counted separately.

3. Divided by use: Newsprint is a kind of special printing paper mainly used for news publication. Due to its large proportion, it is customary to list it in a separate category;

Printing Paper, writing paper, for printing and writing and including painting and drawing paper; packaging paper; technical paper (industrial and agricultural technical paper); sanitary paper; processed base paper for further manufacturing and processing of paper; cardboard; processing paper etc.

Extended information

Classification and selection of common paper

Paper: thin sheets made of plant fiber, used for writing, printing books and newspapers, packaging, etc. Paper: The general name for paper. Paper is measured in sheets, so it is called. Paper is generally divided into: letterpress printing paper, newsprint, offset printing paper, coated paper, book cover paper, dictionary paper, copy paper, cardboard, etc.

Rush edge paper: Rough edge paper is thin, soft, light yellow in color, has no water resistance, and has good ink absorption. Raw-edged paper is only suitable for single-sided printing and is mainly used for ancient books.

White paper: White paper has small elasticity, toughness, and is not easy to break when folded. It is mainly used for printing packaging boxes and product decoration lining paper. In book binding, it is used for binding materials such as the inner cover of simple hardcover books and the diameter paper (spine) of hardcover books.

Based on paper surface, white paper is divided into two categories: pink white paper and ordinary white paper. According to the bottom layer, there are two types: gray bottom and white bottom.

Paper selection

The selection of paper includes several aspects such as selection of varieties, specifications and quality levels. You cannot only focus on one aspect and ignore other aspects.

When choosing paper types, you mainly need to choose based on the characteristics of the printed matter to be printed and the type of printing press used. When printing color covers, illustrations or advertising inserts in books and periodicals, double-sided coated paper or double-offset paper can be used;

For single-sided printing such as trademarks, single-sided coated paper or single-offset paper can be used; Dictionaries, dictionaries, manuals and other reference books should use dictionary paper or thin letterpress paper; when printing general books, offset printing paper or letterpress printing paper can be used.

It is also printing general books. If you want to use it on a rotary printing press, you need to use web paper (except for platform rotary printing machines). If you plan to print on a general platform, you need to use flat paper; if you want to use it on an offset printing machine, you need to use flat paper. Offset book and periodical paper should be used for printing. If printing on a letterpress printing machine, letterpress printing paper will suffice.

Baidu Encyclopedia: Paper