Horizontal touch machine
Simply , It is the wall-mounted advertising machine plus the base, using electronic ultra-white tempered glass, the transmittance is 95%, the interactive color is beautiful, the picture quality is fine, the space is 3D surround sound, and the full -function simple remote control operation is widely used. Wedding, hotel, dining, night club, etc.
First, the correct operation of the graphic point transferred from the film to the PS version
Commonly used in China is a positive-type PS plate. This type of plate is prepared by coating a prepared photosensitive liquid onto a surface-treated aluminum plate, which is heated and dried to form a photosensitive layer. The pre-coated plate is used for storage and use. During the printing, the sensitized plate and the positive plate coated with a photosensitive layer are closely exposed to light, and the photosensitizer in the light part is decomposed to release nitrogen, causing cracking of the ring, rearrangement of the molecular structure, formation of an fluorenone compound, and formation of tannic acid in water. The compound is subjected to a development treatment to remove the photo-decomposed photosensitive layer, and a non-photosensitive region, that is, a graphic portion of the plate, is stored to make a printing plate.
We know that the contact between the film and the photosensitive layer of the PS plate is an important factor affecting the quality of the plate. The contact state is different, and the dot change rule is also different. Good contact is a prerequisite for adjusting the controlled transfer of the dot. Operation should be strictly relative to the surface of the drug film, suction tightly, to ensure good transfer of graphic network points. However, the production of drug film surface is still the case back, due to the thickness of the film base will cause light scattering, uneven transfer of dots, the change can not be controlled, should be strictly avoided. In daily production, there are many problems in this area, as described below.
1 The platen itself has poor vacuum contact, and the glass and rubber of the platen are not even. A good blanket pad should be raised in the middle, or suction offset; if not flat, the middle pad to be a cloth, in order to pump flat service.
2 The pumping volume of the vacuum pump is too low. A good stenciler can take a piecewise evacuation, which is sufficient to ensure that it is closely packed and vacuumed for good contact.
3 Overlaid films l ~ 3 small pieces and sticking tape on the sides of the figure, resulting in insufficiency in pumping, and partial virtual edges. The inconsistent cutting of the negative film, the distance from the base of the film is different, resulting in different deformation of the spelling graphic.
4 There are dirt on the original film and plate, resulting in incomprehensive local pumping.
In response to these problems, the author proposes several suggestions:
1. Ensure that the printing equipment is in a good working condition to ensure that the pumping can be vacuumed and the film is in good contact.
2. Before the printing, you should check the film carefully to minimize the overlap of the imposition pictures and the excessive sticking of the tape.
3. Check the printing plate glass, PS plate and film, no dirt.
4. Add a diffuser or diffuser and use a split or double exposure to reduce film and dirt.
Second, the printing body version of the registration problem
For a set of film, we will pay attention to their registration. When the image is transferred to the plate, its registration will be transferred to the next process: printing. In fact, some operations in production often result in imprints that cannot be registered:
1. Film transfer occurs during printing.
2. The temperature in the baking plate is unstable or non-uniform, resulting in different degrees of deformation of the plate.
Because the printing plate is not allowed to be dried, corrections such as pull plates are required during printing, which inevitably results in graphic distortion.
In this regard, the author believes that: in the imposition or the film, even if the attention to the picture of the registration, in the printing plate, it can not be taken lightly, that the printing plate must be set properly, only strict process specifications in order to sun out High quality qualified plate. A good printing opportunity has a printing plate punching and positioning device, which cooperates with the plate loading device of the printing press to ensure the printing plate registration accuracy. Such as Heidelberg, there is a professional printing plate positioning device, with the printing machine's automatic plate-fitting device, so that the operation of the printing plate is minimized, almost no need. In the long version of the live must be baked version, we must make the baking machine to work in a stable state of work, to ensure that the PS plate deformation consistent.
The printing plate is used as an intermediate for the transfer of graphic and text information. The quality of the printing plate directly determines the quality of the printing artwork. Therefore, it must be given full attention and cannot be taken for granted. It causes troubles for the printing operation and the graphic reproduction cannot be well reproduced.
Horizontal touch screen kiosk,Digital signage kiosk,Horizontal Digital Signage, Horizontal display
Guangzhou Sosu Electronic Technology Co., Ltd. , https://www.sosuchina.com