Printing paper

A paper used for printing and copying documents

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Printing paper refers to a kind of paper used for printing documents and copying documents. The specifications are in A0 A1、A2、B1、B2、 A4 、 A5 . etc. Commonly used A4 paper , which is widely used in examination papers.

Chinese name: Printing paper
Foreign name: Printing paper

Specifications: A0，A1，A2，B1，B2， A4 ， A5
Application: test paper

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Classification of printing paper

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Sort by length and width

The specification of paper refers to that after the paper is made, it is trimmed and trimmed to a certain size. In the past, the paper size was represented by the number of "open" (such as 8 open or 16 open). our country Adopt international standards , A0 A1、A2、B1、B2、 A4 、 A5 . and other marks to indicate the paper size. The standard stipulates that the proportional relationship between width (represented by X) and length (represented by Y) of paper is X: Y=1: n.

according to Paper size The basic area is divided into A series, B series and C-series The size of A0 format is 841mm × 1189mm, and the format area is 1m2; B0 has a size of 1000mm × 1414mm and a size of 2 ^ 0.5m2; The breadth size of C0 is 917mm × 1279mm, and the breadth area is 2 ^ 0.25m2; Copy paper Only series A and B are used for the format specification of. If A0 paper is split in half along the length, it will become A1 specification, and if A1 paper is split along the length direction, it will become A2 specification, so it is split to A8 specification; B8 paper is also opened to B8 specification in this way. The size of A0~A8 and B0~B8 are listed in the following table. among A3 、A4、A5、 A6 and B4 , B5, B6 and other 7 kinds of format specifications are commonly used for copy paper.

For example, "A4" paper refers to the type A Basic dimensions The paper is folded 4 times, so one sheet A4 paper The area of is one fourth power of 2 of the basic paper area, that is, 1/16. The rest are the same.

There is also a kind of K-type paper, which is often called split type paper. Only in China can K-type paper be used. Generally, A-type paper is used. Regardless of type A and type B, they are classified as follows: for example, A5 is twice as large as A6, A4 is twice as large as A5, A3 is twice as large as A4, B4 is twice as large as B5, B3 is twice as large as B4, while type K is classified as dividing a large 1K paper into two pieces of 2K paper, and dividing a 2K paper into two pieces of 2K paper 4K Divide 4K into 8K, 8K into 16K, 16K into 32K, etc.

State regulated Folio Dimensions are adopted international standard Series, now in the country Industry standards GB/T It was implemented nationwide in 1999. Books and periodicals This volume The current format is mainly A series specifications, including the following:

A4（16k）297mm×210mm；

A5（32k）210mm× 148mm；

A6（64k）144mm×105mm；

A3（8k）420mm×297mm；

Note: A3 (8k) size has not been specified, but it is commonly used. A4 (210 * 297mm) paper is generally used internationally to print copy paper, but the United States and some countries use abnormal A4 size paper: 216 * 279mm, commonly known as American Standard, American regulation 。

The corresponding sizes of different types of paper are as follows:

Paper size

2. Classification by weight or thickness:

Also, according to the thickness of paper, such as 60g, 70g, 75g, 80g, 85g, 90g, 100g, 120g, etc., it means that the weight of paper per square unit area is multiple, because the density of paper is basically the same. The heavier the weight of paper per unit area, the thicker the thickness of paper. For example, general Quick printing machine About 40g paper is used, while the all-in-one machine uses 50-60g paper, while the copier uses 70-85g paper. Generally, the printer should not use paper less than 60g thick, otherwise it is easy to jam. For example, 70 grams of A4 paper means that the weight of the paper is 70 grams per square meter, not 70 grams per sheet of paper. A piece of A4 paper with a fixed weight of 70 grams Actual weight Is: 0.210 × 0.297 × 70=4.3659 Reference: coastal areas Most offices use 80g paper, while the mainland and Northern region 70g printing paper is mainly used for office work.)

Sort by size and number of layers

Computer printing paper for needle printers of office automation series is classified according to the size and number of layers of paper, such as 241-1241-2, which respectively represent 1-layer and 2-layer narrow line printing paper, and of course, 3-layer and 4-layer printing paper; Common wide line printing paper includes 381-1381-2, etc. For example, 241-2 refers to carbon free printing paper (also known as Pressure sensitive paper , computer printing paper, computer paper, etc.) Needle printer Print on. 241 stands for 9.5 inches, that is, the width of the paper. This paper is also called 80 column printing paper (9.5 inches wide * 11 inches high from top to bottom), that is, the normal font is 80 characters per line (80 columns for short). The main uses of these papers are:/ Receipt Doc ， financial statements , by sea Air waybill , room bills, consumption bills, bank bills, main applications: government departments, enterprises, banks, hospitals Courier Services Company , supermarkets, hotels KTV , outpatient department, wharf, air and sea transportation, etc.

Carbonless printing paper

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Carbonless printing paper, also known as pressure-sensitive printing paper, consists of Paper loading （ CB ）, medium paper (CFB) and lower paper (CF). It uses Microcapsule Of Chromogenic agent And Chromogenic agent The occurrence of acid clay in the layer chemical reaction When printing, the printing needle is applied to the paper to achieve the color rendering effect. The common and commonly used color rendering layers are 2 to 6.

Purchase carbon free printing paper

When purchasing carbon free printing paper, pay attention to the Outer packaging Whether it is damaged (if the outer package is damaged or deformed, it may cause the paper inside to develop color). B: Open the outer package and check whether the inner package has a certificate of conformity, whether the paper is damp, wrinkled, and whether the color development meets your requirements (usually tear off a copy and write a few words on it in a normal way, and then check the color development degree of the last layer) C: confirm whether the specification of the printing paper is what you need, To avoid unnecessary waste and trouble.

For carbonless printing paper specifications

The common specifications of carbon free printing paper are 80 columns or 132 columns, and there are also special specifications (width, length, horizontal equal parts, vertical equal parts, etc.). 80 columns are most commonly used, and the size is 9.5 inch X11 inch (with holes on both sides, 22 holes on each side Hole spacing 0.5 inch) Approximately equal to 241 mm x 279 mm. 80 column paper is also generally divided into three specifications: 1: full page (9.5 "X11"). 2: One in two (9.5 "X11/2"). 3: One third (9.5 "x11/3").

After unpacking, it should be noted that if it is not used for a long time, it should be put into the original plastic bag to prevent moisture, damage, etc. If it is carbonless copy type printing paper, it should be careful not to be squeezed by sharp objects or external forces, so as not to cause color development, etc., affecting the use. Before using the product, confirm the position of the printer. When printing in multiple layers, try not to High speed printing To ensure that the definition 。 The documents shall be stored separately. If they must be mixed together, squeezing shall be avoided. It shall be light proof, waterproof, oil proof, acid proof and alkali proof. As long as in an appropriate environment, carbon free printing paper can be kept for at least 15 years. In case of paper jam during printing, check whether the printing paper is properly positioned and aligned with the paper drawer, Print head Whether the position suitable for the number of paper layers has been selected.

receipt printer Or push type printers, etc. are most suitable for using multi link carbon free printing paper products. These printers are designed so that the printing paper will not be bent in the machine, the printing paper will be flat, and the printing force will be large.

Carbonless paper Ambiguous color development

Color failure may be caused by reversed loading of the printing paper. Reload the paper.

The reason for unclear color display may be that the pressure of the printer is insufficient or the print head occurs Broken needle It can increase the printing force to check whether the needle is broken.

Color rendering is a chemical process , by ambient temperature It is normal that the chemical reaction activity is slow, especially when the temperature is low in winter, and clear writing cannot be seen immediately after printing.

Key points of purchasing ordinary printing paper

To purchase a common printer, please refer to the following points:

1. Paper thickness

Ordinary printing paper

The thickness of paper is usually expressed by the weight (g) per square meter. The thickness specification of common printing paper and copy paper is 70~80g/square meter.

2. Paper density

The density of paper refers to the density and thickness of its fibers. If the fiber of the paper is too sparse and too thick (i.e Density difference ）, using Ink jet printer It will cause the reverse side to be soaked, the printing effect is poor, and it is also easy to produce paper wool Paper scraps , damage the printer.

3. Paper Stiffness

The stiffness of paper refers to the strength of its texture. If the stiffness is poor, it is easy to encounter a little resistance in the paper feeding channel, and the paper will be wrinkled and blocked, so the printing paper with good stiffness should be selected.

4. Surface luminosity of paper

The surface brightness of paper refers to the brightness of the paper surface. The paper color should be white, not gray, and the brightness should not be too high, Luminance Too high is bad for image fixing.

5. Drying degree of paper

Print paper if Dryness Low, water content Large, it will reduce the paper Insulation performance , thus affecting the printing effect, Bottom ash It is large, and it is also easy to cause paper jam. Therefore, printing paper with high dryness should be selected. On the other hand, the paper should be kept moisture-proof and stored in a dry and ventilated place.

6. Quantity of paper

Printing paper Quantity unit : Order. One order=500 pieces.

Other paper classifications

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newsprint

be commonly called newspaper , characterized by soft and porous structure, Absorptivity Good, it can make the ink penetrate and fix in a short time, and will not get dirty when folding. It is used in high-speed Rotary machine upper Printed newspapers , periodicals and general books. newsprint The ration of newsprint is 51g/m2, and the width of newsprint web is 1572mm, 1562mm, 787mm and 781mm; flat Master paper The paper size is 787mm * 1092mm. Newsprint printing adaptability, Opaque , but low whiteness, surface Smoothness Different, use thicker when printing pictures Mesh It is easy to become yellow and brittle after sunlight, so it is not suitable for long-term storage.

Carton board

Also known as hemp board, it is a relatively strong cardboard used in cartons, and is widely used for shipping books, general merchandise radio TV, machine parts and food, etc. The ration is 200g/m2, 310g/m2, 420g/m2 and 530g/m2. Flat surface mechanical strength OK.

Copper plate paper

also called Coated paper , is to apply a layer of calcium carbonate or White clay Equivalency adhesive Prepared white paint, dried Calender Advanced made Printing paper 。 Because of its exquisite whiteness, smoothness and gloss High and moderate Oil absorption , suitable for copper plate printing or Offset printing Printing colorful or monochrome pictorials, pictures, calendars, maps, books and periodicals is also used for packaging and printing. It is divided into single-sided coating and double-sided coating Fente No. 1, No. 1, No. 2, No. 3, the quantitative range is 80g/m2 to 250g/m2. Copper plate paper It is required to have high coating strength, no powder shedding, and be suitable for more than 60 lines/cm Fine mesh Visual printing.

Offset paper

Old name“ Daolin paper ", for offset machine Paper used for books and periodicals. It is suitable for printing single or multi-color book covers, text, inserts, pictorials, maps Poster Color trademarks and various packaging products. Offset printing Paper is divided into special size, No. 1 and No. 2, and the quantitative range is from 70g/m2 to 150g/m2. The pulp has high strength and printability. Offset printing is a relatively advanced book Printing paper ， contrast ratio 、 Expansion ratio And surface strength, Acid-base property It should also be near neutral or Weak alkalinity In order to avoid affecting the paper used for printing, the ration is 40g/m2 to 80g/m2.

Letterpress paper

A suitable Letterpress Printing various books Stationery And the body of the magazine. The ration is 52g/m2 and 60/m2, with web and Flat paper Two, smoothness 30m, Opacity Not less than 88%. Letterpress paper It is widely used book paper, slightly smoother than newsprint, Retention period Long, but prone to hair and powder loss, not suitable for offset printing. This kind of paper is easy to sink when writing.

Straw cardboard

also called Yellow cardboard Or horse manure paper, which is yellow cardboard for packaging. It is mainly used for the packaging of goods, the cover lining of paper boxes and bookcase books. The quantitative range is 200g/m2 to 860g/m2. The commonly used ones are 420g for No. 8, 530g for No. 10 and 640g for No. 12. Straw cardboard It is required that the quality is tight and firm, the paper surface is flat, and there is a certain mechanical strength and toughness.

Whiteboard

also called Manila paper , which is white and more advanced Packaging cardboard 。 It is used for printing caps Children's education Pictures and Stationery Trademark of cosmetics and drugs. The quantitative range is 200g/m2 to 400g/m2. The thickness is consistent, no fuzzing, no powder dropping, toughness, folding is not easy to break.

Bound paperboard

Important materials for bookcases, including Whiteboard Yellow cardboard Carton board It is mainly used for making hardcover book cases and Envelope 。 The hardcover book case with cardboard as the skeleton has the advantages of firmness, beauty and long-term preservation.

Calcium plastic paper

It is similar to paper in appearance, resistant to water immersion, non hygroscopic, not easy to burn, and has high Bursting strength And anti Tearing degree ， production costs Low. It is squeezed and calendered at 160 degrees, and its thickness is Master paper Similar, it can also be made into thicker paperboard, which has certain penetration of ink Absorptive capacity , can print clear pictures and words. It can be used to print book cards, securities, labels and color prints, and can also be produced Corrugated cardboard Box for transporting food and goods that need moisture and oil resistance.

Kraft paper

It is a tough and water resistant packaging paper, brown in color, widely used for making paper bags, envelopes, record cases, files and sandpaper. The quantitative range is from 40g/m2 to 120g/m2. There are differences between web paper and flat paper, single side light, double side light and striped light. major quality requirement It is flexible and strong, with high bursting resistance, and can withstand large tension and pressure without cracking.

cellophane

also called cellophane paper It is high grade packaging and decorative paper that is as transparent as glass. It is used to package grain and fruit, food, shirts, cigarettes, cosmetics and other commodities. The ration is 30g/m2. In addition to transparent and colorless, there are many colors such as golden yellow, peach red and emerald green. cellophane It is impermeable to air, oil and water, soft and strong, colorless, transparent and shiny. After sealing, it can prevent moisture and rust, but it will crack if there is a slight crack. Because of its large longitudinal strength Paper rope 。 Waste cellophane cannot be recycled.

Postmark paper

It is an extremely thin single-sided light writing paper, with a quantitative of only 20g/m2, originally mainly used for stamps Backing paper And sealing paper for insured letters. It is mainly used for cosmetics, fruit and food packaging and cigarette lining. It can be made into candy after printing and waxing packing paper , can also replace Typewriting paper and Copy paper Printing documents summons Or multiple pages Carbon paper 。 The quality requirements are thin and strong, with good transparency and great tension, Air permeability Small.

Chinese painting paper

It is a paper for writing and painting with a brush a kind of writing paper , Xuan paper Rough edge paper Etc. Yuanshu paper is made of bamboo bark , rags, old hemp, straw, etc Plant fibre As raw material, it is soaked, digested, naturally bleached and ground into pulp bamboo curtain The paper made from the upper copy is pressed dry and pasted on the Firewall The paper is white (or slightly yellow), even and soft, easy to absorb ink, and durable. Xuan paper is Sandalwood The tree bark and a small amount of rice straw pulp are made through meticulous work Calligraphy and painting paper ， Raw rice paper Suitable for Freehand brushwork in traditional Chinese painting And calligraphy. The cooked rice paper made from it is suitable for claborate-style painting The color is white, flexible, durable, and not easy to be eaten by insects. Originated from Anhui Xuancheng The area is famous. Maobian paper is a kind of brush writing paper made of tender bamboo. It is light yellow in color, and the Lianshi paper is white in color. Both of them are copied from bamboo curtains, and are used to print ancient books, tablet stickers, letter paper, fans and other products.

Glossy paper

For writing, office and propaganda slogan Single sided glossy paper used. It can also be used for pasting paper boxes, Packaged goods , printed calendar , letter paper, invoice, etc., are widely used and are commonly used thin paper. It used to be called office paper or snow lotus paper. It is divided into special number, number 1 and number 2, and the quantitative range is from 18 g/m2 to 40 g/m2. Quality requirements: even thickness, flat paper surface, mild Sizing Easy to write, certain Water resistance , colored Glossy paper Also called slogan paper, it is mainly used to write slogans.

Typewriting paper

It is thin paper for typing and copying, used to print documents, tickets or stationery. It is divided into three grades: special grade, No. 1 grade and No. 2 grade. The quantitative range is from 24 g/m2 to 30 g/m2, and 28 g/m2 is commonly used. It requires Paper thickness No more than 0.05 mm, consistent in thickness, capable of typing at one time, duplicating multiple pages, strong and smooth in paper, and non ink absorbing colored typing paper is used for printing multiple vouchers or tickets.

Writing paper

Is a kind of Consumption Big Cultural paper For forms Workbook , account books, record books, etc., for writing, divided into special number, number 1, number 2, number 3, and number 4, the quantitative is 45g/m2 to 80g/m2. Quality requirements: the color is white, the two sides are smooth, the texture is tight, and the writing is not imbued with water.

Gravure paper

It is used for printing various color prints, periodicals, comic books, picture albums, stamps and securities Paper. Its specification and size are basically the same as that of newsprint Letterpress paper and Offset paper Similarly, it can also be divided into two types: drum paper and flat paper. Gravure paper Printing requires high smoothness and shrinkage, and paper whiteness should be high, with good smoothness and softness.

Cast coated paper

also called Glass powder Paper is a kind of high-grade paper with a particularly smooth surface Coated printing paper 。 It is coated on the base paper with two or one thick coating amount (20 to 39 grams on one side). When the coating is wet, the coating surface is close to the highly polished chrome plating Drying cylinder Upper heating and drying, the speed is about 100 meters or lower, and the glossiness is about 85, without calendering. take Coated paper Use pattern roller Embossing Processing, which can be made into cloth paper or Chicken skin paper 。 Cast coated paper The main printing covers, inserts and advanced paper boxes, Textured paper And chicken skin paper are mostly used for printing calendars and business cards.

Matte paper

Official name It is matte copper sheet paper. When viewed in sunlight, it is less reflective than copper sheet paper. The patterns printed with it are not as colorful as copper plate paper.

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