n addition to the choice of suitable substrates (paper or other printing materials) and inks, the final effect of the printed matter will need to be achieved by appropriate printing. There are many kinds of printing, the methods are different, the operation is different, and the cost and effect are different.

Do you know what the specific printing category is?

According to the relative position of the text and non - graphic areas on the printing plate, the common printing methods can be divided into four categories: relief printing, intaglio printing, lithographic printing and orifice printing:

(1) letterpress printing, graphic part convex plates, significantly higher than the blank part of the printing principle is similar to the seal, early woodblock printing, movable type printing and then type printing are letterpress printing.

(2) gravure printing, the printing and printing part of the picture is lower than the blank part, commonly used in banknotes, stamps and other valuable certificate 1 coupons printing.

(3) lithographic printing, the printing plate of the graphic parts and blank parts almost in the same plane, using the principle of water and oil insoluble printing.

(4) porous printing, printing elements for holes, through holes of ink transfer to the substrate surface, a common stencil printing stencil and print etc..

According to the printing method used in the printing press, printing can be divided into:

(1) flat paper printing: also known as sheet fed printing. It is printed on flat paper.

(2) web printing: also called rotary printing. A method of printing by web.

(3) classify the printing method according to whether the plate is in contact with the substrate

(4) according to whether the plate is directly contacted with the substrate, the printing can be divided into:

(5) direct printing: the printing ink on the plate is directly contacted with the substrate. Such as letterpress printing, gravure printing, screen printing.

(6) indirect printing: the printing ink of the plate is transferred by the blanket on the substrate.

According to the printing plate whether to adopt the printing plate to classify the printing method, printing can be divided into:

(1) plate printing: a printing plate made from a pre - manufactured printing plate on a substrate. Such as letterpress printing, gravure printing, screen printing.

(2) non printing: a method of printing directly on a substrate by means of a computer driven printing head (or printing head). Such as digital printing.

When it comes to envelopes, a lot of people think this is a very old object, but otherwise it is still an essential product of publicity. Today, the founder of color printing Xiaobian to share with you some of the envelope printing of small knowledge, do not let go of this promotional material Oh ~ ~ it is also an important element of VI design Oh.

First of all we want to know about the size of each type of envelope, the envelope is divided into domestic Standards No. 2, No. 5, No. 6, No. 7 and No. 9, the dimensions were 176*125MM, 220*110MM, 230*120MM, 229*162MM, 324*229MM. Envelopes are also widely used in life, of course, not just for letters, but for some CDs or red envelopes.

There are a lot of envelope style, but the short side we used is a Chinese envelope opening, there are also some Western envelopes, envelopes, diamond and other portfolio, these are the common envelope style in our life, just for different purposes.

The envelope in the printing house, in order to facilitate the writing mostly use kraft paper or adhesive tape, of course there will be the pursuit of style selection of specialty paper customers, but the choice of what kind of paper needs to have high tensile strength and tear resistance, so as not to break the cracking.