Meticulous Flower and Bird Painting Screen Printing and Coloring Techniques (I)

Meticulous flower and bird painting as a painting department, with the landscape, figure painting formed the art category of Chinese painting. In our country, we have a long history and excellent traditions. Through unremitting efforts and explorations by artists of all ages, the paintings of birds and flowers have formed a set of painting expression methods with oriental ethnic characteristics.

A good painting of fine flowers and birds can make people feel impressed and impressed. In order to obtain a good painting of flowers and birds, in addition to the selection of rice paper, silk, and pigment, we must pay attention to some problems in the screen printing process.

First, drawing negative film
Due to the large size of the meticulous flower and bird paintings, the quality of the photographic plate is good, but the cost is relatively high. Now we introduce several methods of hand-made film, which are both economical and practical.

Matte surface polyester film, 0.5 ~ 1.2mm thick. When using a thicker one, flat, difficult to warp, and good results. Before painting, scrub the terrazzo with talcum powder to remove the oil, then wipe the talcum powder and cover it with a clean fleece with the suede facing down. After the film is ready, the drawn draft paper is placed under the smooth surface of the polyester film and compacted.

Because the polyester film is slippery, it is not easy to stain the ink, sometimes it also loses ink color. This causes waste, and it is difficult to modify the draft and the effect is poor, which affects the quality of the printing plate. In order to trace high-quality manuscripts, neither ink nor ink, they have to work hard in Mexico to ensure the smooth development of the manuscripts.

Several methods of ink coloring are as follows:

1) Use a good soot block, add 1 to 2 drops of glycerin when grinding, and study it to a thick ink.

2) Take 150mL black ink, add about 8 ~ 10mL of formaldehyde, 3mL glycerol and mix thoroughly, let it naturally concentrated, if it is too concentrated can add appropriate amount of original ink thinning.

3) Use two bottles of drawing ink from Tianjin, add a tablespoon of sugar and a small spoonful of borax together into a beaker, put it on a simmer, and cook until the ink in the cup is reduced to about half.

4) Use a lot of detergent powder in Yideuge ink to grind to a thick ink and use it. This method writes awards and it is easy to get ink.

The motion picture pen should be drawn according to the intention of the manuscript. Do not behave rashly or change it. Take it seriously. Otherwise, the underlying film will be dirty.

The painted polyester manuscript can be used directly if it is used once. If it is used multiple times, it must be sprayed with varnish thinly and then dried and used. It can also be sprayed with kerosene for the purpose of increasing its transparency, but the durability of kerosene is poor.

A small amount of available glass, choose a glass of the same size as the manuscript, use a washing powder, shoe brush to rotate and grind the two sides, rinse it, dry it slightly, wipe it with a little white water, and paint it after drying. After the manuscript is finished, spray varnish again and use it after drying it.

Can also use cellophane (celluloid) rendering. The cellophane is thin and does not have to wrinkle when it is used. After painting, you can use kerosene once.

The red tear film is used to make the bottom plate. First, the manuscript and the red tear film are fixed, and the line is cut with a knife. The line is left and the excess is removed. The advantage of red tear film is that it is suitable for making negative images, and the effect is quite good.

The film base of the manuscript is relatively soft and must use a thin glass with high transparency and no water ripples of 3 to 5mm. Stick four corners with tape, do not scratch the book, flatten, set the rules, you can print.

Some of the original manuscripts are to be reused. After the silk screen version is printed, the manuscripts are removed and wrapped in airy, burr paper. The next time they are used.

Second, stretch net, glue, printing plate, scraper, printing material
The stretch net first selects small red, white pine or dried paulownia trees, preferably fir. Saw a wood strip with a width of 40mm and a height of about 30mm, and open a groove of 8mm in depth and 5mm in width at the 2/3 part of the wood strip, fix the wood strip with a rake and a rake, or nail it into a frame with a corner iron. The four corners are 90 degrees, and the size depends on the requirements. The in-frame size is approximately 60mm larger than the four sides of the screen.

When stretching the net, first grab the corners of the soaked and soft wire mesh with both hands, shake the water, and put it on the net frame to find a good position. The cable should be horizontal and vertical, first use a small nail to nail the four corners, and then nail it in the middle. Do not push the nails to the end. After flattening, the square bar with the same width and width as the frame slot will be set in the slot. The weft and back warp will slow down. Slow inset. When the edges are flat, the wood strips are plunged into the grooves, so that the tension is even and the printing is not easy to deform. Then the small nails outside the grooves are pulled out, the excess wire mesh is cut off with a flat spatula or a knife, washed with water and dried for use.

Under normal circumstances, the net has to be stretched in advance and placed for one or two days. The purpose is to relax the screen and avoid cracking after gluing. Special attention should be paid to the fact that the latitude and longitude lines at the time of stretching must be perpendicular to each other so that jaggies can be avoided and printing quality can be guaranteed.

It is also possible to stretch the net diagonally. This method is suitable for the printing of circular screens with little distortion. The stretched frame must be treated with aging so that the tension is even and it can improve the resistance and precision.

Stretch the frame and rinse it with clean water. Then put it in the aqueous alkaline solution to degrease and remove the fingerprint. At the same time, the screen has also been roughened to increase the bonding strength. It is better to use imported grinding sizing, but the price is higher.

The formula of the aqueous alkali solution is as follows: