T-Shirt Design Tutorial T-Shirt Printing Detailed Process Introduction A

Detailed description of T-shirt printing process A

Two. Making sedan manuscripts.

Plate making can also be called black-and-white draft, color separation, plate making and so on.

Its main function is to make photosensitive printing. Therefore, the plate must be drawn on the plucent substrate. Its image is opaque ink (black or red). The pmittance of the substrate and the density of the ink layer are the key indicators to determine the quality of the plate making.

The formation of plate making images is mainly made by hand drawing, manual or mechanical engraving, photosensitive copy, laser Phototypesetting, printer printing, and so on. However, it is also used for plucent processing of ordinary paper, such as oil, as a plate making manuscript.

1. color separation

There are two main types of color separation in T-SHIRT DESIGN: spot color separation and primary color separation.

The special color separation of T-shirt design refers to the use of any specially designed color as a printing color alone.

We usually talk about five sets of color printing, twelve color printing, refers to the five spot color or twelve spot color in turn to form a color image printing products.

However, the amount of spot color is not equal to the amount of color of the image, because spot color can also be overprinted, so five spot colors can also print six or even eight colors of seven colors.

Spot color printing is mainly used for color block printing. Its reflection on natural scenes can only be simulated rather than reduced, which is the biggest difference from original color printing.

But with the development of screen printing technology and the development of new ink, in recent years, spot screen printing has sprung up, especially in T-shirt printing. The latest fashionable T-shirt printing technology in the world is not original color printing, but spot color screen printing, that is, multicolor spot screen printing on color, especially black T-shirts.

Primary color separation refers to the decomposition of natural color images into three primary colors (Pin Hong, green, yellow), so as to carry out the three primary colors price printing, so as to restore the object image.

Any color in nature is made up of three primary colors, so theoretically, green, yellow, and three color plates can be used to print realistic restoration images. However, due to various factors, it is difficult to achieve the printing of tricolor prints.

Therefore, in printing practice, four color printing is usually used, that is, three primary colors plus black.

In recent years, in order to restore colors more vividly in the world, six color printing and seven color printing have been developed on the basis of four-color printing. The principle is to separate compound orange, purple and green on the basis of four colors, so as to reduce the grayscale to achieve high fidelity effect in printing.

In order to distinguish between spot color printing, we usually use the color or printing technology to separate the natural color patterns by the optical or digital technology. They are called primary color printing (which can be understood as reductive color printing).

It is worth mentioning here that primary color printing is not incompatible with spot color printing.

In the world, the latest development of color printing is the combination of primary color and spot color for special primary color printing. It has played the role of the two, complement each other, and has more advanced printing effect.

This has also been allowed to play in T-shirt printing.

I saw a T-shirt produced in the United States, a total of 12 color printing, in addition to four primary colors, but also equipped with eight sets of spot color, in addition to gold and silver, especially foam printing and crystal paste printing, the effect is not only strong sense of three-dimensional and special parts sparkling, really amazing.

Professional T-shirt designers usually design composition according to the principle of spot color or primary color. After getting such a design draft, they can separate colors according to their requirements.

But there are also some non color designers or customers who only provide the original manuscript of all kinds of pictures or drafts, so that they can be printed on T-shirts.

In this case, we have to communicate with designers and customers: first, we need to know what the creative intention is and how to express it. In order to achieve this effect, do we adopt spot color printing or primary color printing?

Even the original color printing?

At this time, we need to provide T-shirts with different printing methods to them so that they can understand and choose. Secondly, we should tell them the cost of processing spot color printing and primary color printing so as to make them decide that they should be put into the plan.

2. color separation plate making manuscript

The color separation plate making manuscript is used for photosensitive manufacture of the corresponding color separation screen printing plate.

The quality requirements are: first, the pmittance of the substrate is good, and the two is the high density of image shading. The three is that the matching accuracy of the dichroic films must be accurate, and the edges of the lines are neat and neat, and the dots are full and clear.

(1) multi chromatic splitter positioning is generally based on cross lines, but in the process of printing, it is easy to reverse the color splitter, or make a mistake on the right or wrong side, or reverse the graphics. We use the left and right oblique methods to locate the cross line, that is, the left side is +, the right side is x, so that the error is eliminated.

(2) since red tearing film is more expensive and not easy to purchase, it can be replaced by red self adhesive paper.

As long as the red self adhesion is only applied to the PVC film (on the original manuscript or line draft), it can be carved with a graver.

Because the pmittance of the red self adhesive paper is far less than that of the red tear film, the light of the light drawing desk should be brighter.

In this way, you can achieve low price, good shade effect, and clean lines, no fear of water and humidity. What's even more wonderful is the convenience of modification. As long as you peel off the retouch, you can't reprint the red touch, and ink painting can only make minor modifications.

(3) if two patterns of printing plates are not connected or overprinted, two color sheets can be drawn on a diaphragm, and two plates should be dried when printing. The A version will close the B pattern and the B version will close the A pattern.

It can even dry a piece of paper, add an ink ribbon between the AB patterns, and print two colors with one block at the same time.

3. handmade manuscript

Manual manuscript is the most basic traditional method, mainly for manual manuscript and manual engraving.

Hand made manuscript tools mainly include: light drawing table (OA table), drawing ink pen, drawing compass, triangular plate, curved plate, carving knife, steel ruler, drawing PVC film, PCV film drawing ink, red tear film, red self adhesive paper, etc.

T-shirt design manual manuscript, first of all, there must be a lamp light drafts table, light source is generally fluorescent lamps, such as the use of incandescent lamp, you should use frosted glass or a piece of copy paper under the glass, so that light is soft and does not hurt the eyes.

If you need to trace at home or in a temporary place, the emergency method is to place the stool on the floor, and put a piece of glass on the four stool legs, then put a lamp on it, so that it can be used.

Drawing ink pen, mostly using needle pen, pen diameter 0.2 ~ 1.3mm.

In order to prevent pen blockage, put a hollow cotton (or sponge) in a bottle and add half bottle of water. When the drawing pen is disused, insert the pen into the bottle, so that the pen head is no longer blocked.

Steel ruler is used to cut red tearing film and self adhesive paper.

When drawing with triangular panels, curve boards, etc., the beveled edges should be faced down to avoid ink being towed by the ruler.

The general drawing ink can not be used to draw the diaphragm because it is slow drying, poor fastness, and it gets wet when it rains.

It is better to use special film drawing ink to draw PVC diaphragm. If you can't buy it at one time, you can replace it with Yide ink, but you need to boil it to make it thicker.

When you paint large area with Yide Ge ink, pay attention to the ink layer not too thick to avoid cracking.

You must wash your hands with soap before hand drawing, because the grease on your hands will affect ink painting if you stick it on the diaphragm.

Draw according to the size and the sequence of printing.

The printing paste has the covering power, so its various shapes can be printed more or more. Even the light color draft can be used as the background color of the dark color.

For example, if the fabric is dark, you can consider the white background. The printing sequence of the paste printing is the opposite to that of the printing process. First, draw the dark draft, then draw the light draft, and finally the white manuscript.

The water slurry is mainly used for printing white T-shirts, and is a pparent printing coating. Therefore, the overlap of the touch lines is between 1 and 2mm, and if the overprint is too many, it is easy to appear the compound color of two color overprint.

The drawing order is to first draw a colored draft (usually black) with contour lines, and then draw the manuscript from light to dark in the light of this diaphragm.

Foamed printing plates should be kept in a bubble screen with a high bubble of about 1 to 2mm and a low bubble of about 0.5 to 1.0mm.

The basic requirement of hand drawing (engraving) is smooth, smooth and clean lines, and the ink drafts must be trimmed, especially the sharp corners.

4. computer Digitalization

With the development of computer technology and production, computer digitalization design and drafts and manuscripts have become quite popular in China.

Compared with manuscript manuscript and photographic manuscript, it has the advantages of higher quality, faster speed, more convenient production, and lower cost. Especially its color separation and screening quality far exceeds the level of manual and photoelectric production, and has become a widely used production hand.

On the computer

A series of works, such as design, color separation, screening and layout, must be completed through the operation of professional graphic design software and publishing software.

General purpose software such as Adobe LIIustrator, Photoshop, CoreIDraw and so on are mainly used for the design and manufacture of image and text, but it will be more convenient to use homemade professional screen printing and publishing software, such as Wen Yuan Ge and montai.

Programs that digitally process T-shirt patterns by computer are generally: Graphic Input - design edit - effect color draft - color separation - Screening - setting the screening angle - output.

If you give it to a professional person, you must tell some technical requirements: first, the color separation intention.

Is the primary color separation or spot color separation or primary color separation, etc., so that the production staff will be clear.

Two, screening.

T-shirt printing screen is generally less than 60 lines, and the limit of the number of wire added depends on the production characteristics, fabric texture and color.

Mucilage printing is usually not suitable for screen printing. Under special circumstances, the screen printing technology should be applied, and the number of mesh lines should be below 40 lines.

The net number of water paste printing is generally about 50 lines.

The number of lines added to hot melt ink can be selected between 35~60 lines. If the fabric is darker, a line of 35~45 can be used to make the ink cover more powerful. The number of foam ink, crystal ink and wire mesh should be coarse and unsuitable.

Because the hot melt ink will never plug in the net, the 70~80 wire screen can also be used.

The dot shape of T-shirt printing usually uses oval and round dots.

Three, the angle of T-shirt screening is usually 15`, usually starting from 5`.

Starting from 20`, the net angle of the seven colors is still separated by 15`.

Four. In particular, we should draw the attention of the production staff to the positive picture of Zhengyang film, which is different from the usual printing plate making manuscript.

The main methods of output are:

(1) printer draft.

Inkjet printer,

Printers and wax spray printers can be used. The cost of laser printers is higher, but the cost of using them is slightly lower. The cost of ink jet printers is low, but the cost of using ink is high, and the cost of purchasing wax printing printers (also called dry printers) is high.

For the quality of film, wax printer is the best, laser printer is also good, inkjet printer is poor.

(2) engraving machine.

That is, using computer engraving machine to engrave the pattern on the red (black) self adhesive paper and paste it on the PVC film, but the lettering machine's precision is not as good as that of the printer, and it can only be used for printing with poor accuracy.

(3) laser typesetting.

Laser Phototypesetting is the highest quality method for making films.

Just because the laser phototypesetting equipment is very expensive, only a certain size of the plate making center will be configured.

The price is higher than that of the printer, but the quality is much better.

(to be continued)