Printed version printing features and process introduction

The printed version is subdivided into hand waxed paper and typed wax paper.

1. Hand-printed wax paper printing

Printed version printing is commonly known as mimeograph. Because of its convenient operation, simple equipment, and low cost of printing, it is almost universally spread to all aspects of society. The typing and writing rooms of institutions, schools, enterprises and institutions, social organizations, etc. are almost all printed and printed. There are also many types of printing services on the market. Just because of its poor printing quality, it is not a good thing, so the printing industry's competent authorities never regard it as a printing industry, but belong to the cultural service industry. But in principle, of course, it should belong to the printing category.

The name of the stencil edition is called "edition". In fact, it is just a waxed paper. The wax paper is laid on a steel plate, and is inscribed or scribed on the wax paper with a steel stylus. Since the steel plate is covered with raised webs, the wax layer on the wax paper is coated by the steel nib and the steel plate mesh. Scratched to reveal the fiber pores of the wax paper itself, and the engraved wax paper was attached to the stretched frame and became a wax plate. When printing, the wax plate is placed on the substrate, and the roller is used to roll the ink on the wax plate by the ink roller. Under the pressure of the ink roller, the ink passes through the fiber pores in the graphic area of ​​the wax paper and is transmitted to the substrate. print.

This kind of printing method is simple enough that it can no longer be simple. It does not need any machine. As long as there are steel needle pens, steel plates, ink rollers, mimeographs, stencil printing inks and papers, they can be stenciled and printed. Although the printing quality is poor, the operation is simple and the cost is low, which still makes it widely popular.

2. Typing and writing wax paper printing

The handwriting of wax paper is simple, but the engraved fonts and fonts are less beautiful and the writing speed is too slow. Since the Chinese typewriter had been used, the use of typewriters to engrave wax paper has gradually replaced the manual writing of wax paper, not only the speed of typing is much faster than the speed of manual writing, and the quality of typing has also been better than the handwriting.

The principle of Chinese typewriters is basically the same as that of Western typewriters, but the structure of Chinese and Western typewriters is very different. The reason is that there are only a few dozen letters in the western alphabet, and there are thousands of Chinese characters. In order to make the structure of the Chinese typewriter as compact as possible, great care must be taken in setting the typewriter of the typewriter. According to the general situation of the use of Chinese characters, the Chinese characters are divided into special characters, common characters, inter-words and spare characters, and a total of more than 2400 words are arranged in the dial according to certain rules. The typewriter's characters are made of hard metal and are called steel movable type. The tool that clamps the steel movable type is called the word hammer, and the hammer and the fuselage are placed on a smooth horizontal track, which can be easily moved back and forth and left and right so that the typing personnel can select words on the dial. The typing wax paper roll is mounted on the rubber roller of the typewriter. When typing, the typing staff selects the word on the dial and then moves the word hammer so that the selected steel movable type is facing the word hammer that captures the steel movable type. The typing staff presses the typing button, and the word hammer quickly grabs the steel movable type from the dial and hits the typing wax paper on the roller. So the handwriting of the steel type was printed on wax paper, breaking the wax layer and exposing the pores of the paper fiber. After the word hammer completes the blow, it automatically sends the steel movable character back to the original dial. The typing rubber roller drives the typing wax paper to automatically step one grid to complete the typing task for one character. Repeat this process to fight waxed paper and finally complete the typing task.

3. Printing machine printing

Although hand-drawing printing is simple, the printing speed is really too slow. With a hand-printing machine, the printing speed can be greatly increased. Further installing a small motor on a hand-printing printer not only makes the operation more convenient, but also further increases the printing speed.

The gauze of the printer is on the roller, and the engraved wax paper is attached to the gauze drum. After fixing the position, the printer is started. The gauze roller drives the wax paper to rotate. When the input paper passes through the wax paper roller, the ink Passes through the wax paper to the paper, the silk net wax roller completes one printing every revolution.

The domestic Great Wall brand 21 type printer can print 2400 to 3,000 sheets per hour.
Although the printed copy printing is quite popular, due to its poor printing quality, the resistance of wax paper is too low (generally 500 to 1,000 prints or so), and the capacity of the Chinese typewriter's dial is also limited, so for several decades, the printed version has been printed. Technology does not have breakthrough development. On the contrary, since the 1990s, with the advancement and improvement of computerized Chinese information processing technology, the slogan of office automation has gradually become a reality. Many offices have used computer typewriters, laser printers, and inkjet printers to replace wax paper. Printed version printing.