Paper matters or paper density
Often, when we come to the store for paper, we hear the question, and what density do you need? Some he leads to a stupor. Of course, not everyone dealt with the paper or printing industry. Many did not even think that the paper has its own parameters: density, color, texture, the presence or absence of a special coating - these are its basic characteristics. But how to understand them?
To determine the strength of the sheet there are two parameters: thickness and density. The first is the width of its edge, and the second is the grammar of the paper, that is, a value indicating the weight in grams per area of 1 square meter. Naturally, the higher the density, the stronger the paper.
The standard indicator of office paper is 80 g / m2. These sheets are suitable for printing on an ordinary working printer and large plotters, which are used in printing houses and design studios.
The density of the paper (g / m2) affects its value. This situation is understandable, because many times more raw materials were used to produce high density paper.
Sheets can be of three types: coated, uncoated and half coated. This indicator expresses the intensity of the gloss of the paper or its ability to reflect light. By "chalk" is meant a special layer that covers the paper to give more gloss.
In addition to the aesthetic destination, shine is used in the development of promotional products and for marketing purposes. Such paper looks richer, although this parameter, as a rule, does not affect the cost of printing.
The level of reflection of light from coated paper depends on how well the text printed on it will be read. Some images such effect will give more realistic.
The density of coated paper can be any. It starts from 70 g / m2 and can go up to 400 and 500. For good printing on a coated sheet, more heating of the printing medium is necessary. Therefore, if the paper density is 80 g / m2, there may be no such coating on it. Not all office printers and copiers can provide high-quality printing on the glossy surface of such a sheet.
Moreover, on ordinary office paper, documents are printed for signature, and the ballpoint pen paste often does not write on such a smooth surface or is smeared, which is unacceptable in this case.
Scope of application
Each paper weight has its own purpose. On ordinary office sheets printed most of the documents, reports and forms. This paper is used for copying. It produces convenient drafts and is sometimes used to make envelopes.
More dense paper goes for advertizing and printing products. It prints business cards, booklets, brochures and more. Usually more dense sheets are required for the manufacture of books, reference books and other similar products. It is worth noting that sometimes, in an attempt to reduce the cost of production, small print shops buy lower-grade paper, which may, with the same density of 120 or 240 g / m2, be less suitable for high-quality printing.
Whiteness of paper as an indicator of quality
The whiter the paper, the better the raw materials for its production. Gray and yellowish paper, also called newsprint, is easily torn, dries quickly in the sun and begins to crumble. She is not friends with all models of printers and can not be adequately used in printing.
Office paper with a density of 80 g / m2 can also be white or gray.All popular and well-known brands monitor the quality of their products, but too low a price even for famous-grade paper should alert. Reliable raw materials will always be worth the money. If there is paper for 200-300 rubles for 1000 sheets on the counter in the store, then you don’t need to buy it. Most likely, this is either lower grade paper or writing paper, which is issued for office paper. Both in the first and in the second cases it will be impossible to apply it.
Also, when buying, pay attention to the labeling of the package itself. Sometimes office is understood to mean paper with a density of not 80 g / m2, but 70. It is thinner and more fragile. Many printers will simply rip it, and even not very long storage will make the text printed on it absolutely unreadable.