Semi-Automatic Printer Machine

1. Semi-automatic printing machine product introduction

Semi-automatic printing machine is a kind of printing equipment that combines manual operation and automatic control functions. The basic principle is to transfer the ink to the substrate through the printing plate, so as to achieve the copy of the text. The workflow is usually as follows: First, the operator places the substrate on the printing platform for initial positioning through the positioning device. Then, start the machine, the inking system of the printing press will evenly coat the ink on the printing plate, the graphic part of the printing plate adsorbs the ink, the blank part does not adsorb. Next, the plate is in close contact with the substrate through a pressure system, and the ink is transferred from the plate to the substrate. After one printing is completed, the operator can change the substrate manually or through a simple automated process to prepare for the next printing.

2. Structure composition

Printing platform: This is the area where the substrate is placed and usually has good flatness and stability to ensure that the substrate does not move or deform during the printing process. The printing platform is generally equipped with positioning devices, such as positioning pins, positioning blocks, etc., to help the operator quickly and accurately place the substrate to ensure the position accuracy of each printing.

Plate mounting system: Used for mounting printing materials, can adapt to different sizes and types of plates. The plate mounting system can firmly fix the plate and ensure that the position of the plate does not shift during the printing process. Some semi-automatic presses also have plate fine-tuning functions, which facilitate the operator to fine-adjust the position of the plate to improve the printing register accuracy.

Inking system: including ink tank, ink roller and other components. The ink tank is used to store the ink, and the ink roller is responsible for bringing the ink out of the ink tank and evenly coating the plate. Inking system through a reasonable design and the arrangement of ink rollers, to ensure that the graphic part of the printing plate can get the right amount and uniform ink, while avoiding too much ink caused by fuzzy graphics or ink caused by too little printing unclear problems.

Pressure system: through the pressure regulating device and stamping mechanism. The pressure regulating device can adjust the pressure between the plate and the substrate according to the thickness and material of the substrate, as well as the type of plate and other factors. The right pressure is the key to ensure good ink transfer, too much pressure may damage the substrate or plate, and too little pressure will lead to incomplete ink transfer.

Control system: Although it is a semi-automatic printing machine, it still has a certain control system. The system can control the start and stop of the printing press, as well as some simple automatic operations, such as the frequency of automatic inking cycle and the adjustment of printing speed. Operators can easily set and adjust these parameters through the operation panel, while the operation panel will also display some equipment operating status information, such as pressure value, ink amount, etc.

3. Performance characteristics

High operational flexibility

Semi-automatic printing machine is suitable for small batch and multi-variety printing production. The operator can easily change the plate and substrate during the printing process, and quickly adjust the printing parameters, such as pressure, ink amount, etc., to adapt to different printing needs. For some special specifications or personalized prints, semi-automatic printing presses can better meet the production requirements.

Stable print quality

Through reasonable design, semi-automatic printing machine can ensure the stability of printing quality to a certain extent. The effective cooperation between the inking system and the pressure system can make the ink transfer evenly and print clear and accurate graphics. Moreover, the participation of the operator in the printing process can monitor and adjust the printing quality in real time, find and solve the problem in time, such as the uneven ink can be manually adjusted in time.

Wide range of application

It can be used to print many types of substrates, including paper, plastic sheets, leather, fabrics, etc. For different thickness and surface characteristics of the substrate, as long as through the appropriate parameter adjustment, can be printed. At the same time, it can use a variety of types of inks, such as water-based ink, solvent-based ink, UV ink, etc., to meet the requirements of different prints on environmental protection, drying speed, wear resistance and other aspects.

4. FAQ

Q: What should I do if the printed text is blurred?

A: First check whether the printing plate is installed correctly and firmly. If the printing plate is loose, it may lead to blurred graphics. Then check the inking system, whether the ink roller is worn or blocked, the worn ink roller may not be able to ink evenly, and the blocked ink roller will make the ink supply uneven. If there is a problem with the roller, it needs to be cleaned or replaced. In addition, check the pressure system, whether the pressure is appropriate, if the pressure is insufficient, the ink may not be completely transferred from the plate to the substrate, you can increase the pressure appropriately, but be careful not to damage the substrate or plate.

Q: What is the uneven color phenomenon in printed matter?

A: It may be that the ink is not evenly coated on the plate. Check whether the ink in the ink tank in the inking system is stirred evenly. If the ink precipitates, it may cause uneven color. At the same time, check the status of the ink roller, the surface of the ink roller may have impurities or uneven wear, affecting the uniform coating of the ink. In addition, whether the printing platform is horizontal will also affect the color uniformity, if the printing platform is tilted, the substrate is stressed unevenly during the printing process, which may lead to uneven ink transfer, and the levelness of the printing platform needs to be adjusted.

Q: How to solve multi-color printing when overprinting is not allowed?

A: First check whether the installation position of the printing plate is accurate, the relative position error between the printing plate will directly lead to the overprinting is not allowed. Adjustments can be made using the fine tuning function of the plate mounting system. Secondly, check whether the positioning of the substrate on the printing platform is accurate, if the positioning is biased, the position of each printing will be different. Recalibrate the positioning device to ensure that the substrate is placed exactly in the same position. In addition, the movement of the substrate during the printing process may also cause overprinting problems, check whether the printing platform has debris that affects the stability of the substrate, and whether the pressure system makes the substrate produce unnecessary displacement during the printing process.

Q: What if there is ink stain on the printed matter?

A: First, check the inking system to see if there is ink leakage or excess ink accumulation on the ink roller. If there is ink leakage, it is necessary to check the seal of the ink pipe and ink roller and repair it. For excess ink accumulation on the ink roller, you can use a cleaning tool to clean up. The second is to check the printing environment, impurities such as dust in the surrounding environment may fall on the substrate and mix with the ink to form a stain, keep the printing environment clean, can reduce the occurrence of such problems.

Q: How to adjust the printing pressure?

A: Adjust according to the thickness and material of the substrate. Generally, there is a corresponding scale or indication on the pressure adjustment device of the printing press. The substrate is first placed on the printing platform, and then the pressure is gradually increased to observe the ink transfer through the test printing. If the ink transfer is not complete, increase the pressure appropriately; If there are signs of substrate deformation or plate damage, reduce the pressure. Adjustments can also be made by referring to the recommended pressure ranges for different types of substrates in the equipment manual.

Q: How to adjust the printing speed?

A: Adjust through the operation panel of the control system. Find the printing speed adjustment button or menu option on the operation panel to select the appropriate speed according to the requirements of the print and the characteristics of the ink and substrate. In general, for ink drying speed is slow or substrate surface absorption is poor, should be appropriate to reduce the printing speed to ensure that the ink has enough time to transfer and dry. When adjusting the speed, a small number of attempts can be made, while observing changes in printing quality.