1: Feed (paper)
Whether the machine is normal or not depends on whether you have good material or not. What is “good� Before the paper is on, it must be scattered, loosened, and the material must be equal. The paper that comes out of it, otherwise it will appear early, late, arrogant or double sheets frequently during the operation of the printing machine, causing the machine to stop running or boring the car. Everyone knows that the boring car is very unfavorable to the printing machine. , especially when the printing press is running at a high speed, and frequent parking is very influencing the printing quality, so good material is the key!
2: Sticky (Pa) rubber failure
Because our factory mainly makes its own periodicals, so the paper is generally more fixed, mainly 70g offset, 70g, 80g light coating, 95g, 105g, 128g, 157g high-bright double copper, for our regular point paper, light coating is a comparison Difficult to walk a kind of paper, due to its own nature, it is easy to cause the failure of the sticky rubber, generally will add a certain amount of ink in the ink, reduce the viscosity of the ink, there is the pull gauge must adjust the appropriate, a paper However, if it is not pulled, it will easily cause the failure of the sticky eraser, because in addition to the normal printing area on the eraser, whether it is on the back or on the outside of the rubber, there will be accumulated excess ink, and the stickiness will be relatively large, and it will stick more easily. And tear the paper, causing the failure of viscous rubber, but sometimes when the situation is serious, there is also a way to compare benzene, is to wash the rubber!
After sticking the rubber, the machine will continue to run, but the printed things are all waste products, so this requires people who want to see samples must be diligently sampled to avoid excessive waste of paper due to sticky eraser problems!
3: Pressure rubber
Damaged rubber blanket is what we commonly call pressure rubber. After the rubber is pressed, the color of the pressed color group will not be printed on the place or the dots will be lost. This may cause the failure of the pressing rubber, which may be caused by viscous rubber. It is also possible. For other reasons, the pressure is generally not very strong. After the rubber is loosened, there is a place where the reducing agent is pressed. If it is too severe, and the reducing agent is not used, it is necessary to remove the rubber and remove the rubber. Press the place where the pad, if the rubber is pressed is very serious, the pad does not need to replace the rubber, but sometimes some special circumstances, but also use some special treatment methods, such as: If the pressure on the mouth, then also You can use the "by the rubber" method, that is, drag the hair loose, in the bite of the mouth tightly, to borrow slightly to bite the mouth, but the premise of the drag rubber is good, sometimes before or after the place of pressure If it is blank, you can use the method of using the eraser.
4: Loading Overprint and Plate Common Faults
When the product is changed, the plates will be replaced. When loading, pay attention to the bite and drag the screws must be loose in place, when the version is inserted into the control hole before and after and around, to plug in, do not leave gaps , otherwise the version will be installed, tighten the screw, the first tightly drag slightly, after the tight bite, tight bite when the middle of the two screws can be tightened, but the two sides can not be tight, otherwise it will be the version Pull out, pull the version of the "loosely changed, tightly on the corner" and "less top Dora" principle, sometimes there will be a dirty version of the failure, generally due to the protection of plastic or other causes, this The plate should be wiped off with a clean paste, commonly known as "kneading" in printing.
5: Discoloration of printed products
In a production, the discoloration of prints often occurs, and it is difficult to eradicate them completely. According to the explanations of the masters and the personal summary, there are the following treatments:
1. First of all, we should check whether the design of the printed matter on the layout is reasonable. For example, put a pattern with a relatively large amount of ink (or a superimposition of a four-color net) on a slightly dragged position. For such a layout design, it is certainly not conducive to high quality printing. The prints should place them in the mouth, which will facilitate the control of tooth decay on the paper and make it easier to print prints that do not change color.
2. If there has been a situation where the printed matter is discolored, do not start the conclusion on the problem of the next printing press itself. You should first look for the cause in the periphery of the printing press. First, use a magnifying glass to observe the dots on the printing plate to check whether it has appeared. The deformation of the outlets, if found in the print version of the network has been a distortion, then the film should be checked to rule out the issue when the film.
3. After eliminating the film problem, you should check whether the ink system has a problem. Check the ink system can use a very simple method. First use the car wash water (can add water) to thoroughly clean the ink path. After stopping, you should check the ink path. Whether there is white crystalline particles exist, if found such substances exist, then there may be discoloration occurs in the printed matter produced by the crystalline material Stackel local discoloration, this color change is often reflected in the partial color of the brush product color. After the car wash did not find these crystalline substances, restart the printing press, hit each ink roller, close the ink roller and water roller by the end of the ink, check whether the pressure reaches the standard, if not, it is recommended that All ink roller pressures have been readjusted and have reached a good state.
4. After the ink system has no problem, check the condition of the waterway, adjust the pressure between the water roller, the metering roller, the water roller, and the hydrophobic roller, and especially adjust the pressure of the intermediate roller. Under insufficient conditions, the intermediate water roller is best not to be used in the printing process.
5. If there is no problem with the ink line, it should be checked whether the rubber pad is the standard. It is recommended that the thickness of the pad should be 35 filaments. The blanket is preferably a branded aluminum strip and the blanket is preferably new. The new blanket is best to be tightened again after a period of use.
6. If the heat still does not solve the discoloration problem after these have been done, then you may want to consider the problem of the teeth. You should clean the dental pads, and it is best to remove the springs for cleaning.
7. Check the condition of the paper under the paper, which includes the adjustment of the paper wind, the flatness of the paper in the front gauge, the fit between the paper and the paper pressure, the operation of the paper conveying belt, and so on.
8. Once you have done this, you can try printing. When you try to print, it is best to choose a better coated paper to try it out, to avoid the effects of paper problems. For the thin paper on the embossed air volume should be as small as possible, for the thick paper to open large.
9. The printed matter after the completion of these may be able to solve the problem of discoloration, of course, can not be resolved, if you do these efforts, the printed matter is still discolored as soon as possible to inform the Heidelberg company for maintenance. Let the problem be solved quickly.
Whether the machine is normal or not depends on whether you have good material or not. What is “good� Before the paper is on, it must be scattered, loosened, and the material must be equal. The paper that comes out of it, otherwise it will appear early, late, arrogant or double sheets frequently during the operation of the printing machine, causing the machine to stop running or boring the car. Everyone knows that the boring car is very unfavorable to the printing machine. , especially when the printing press is running at a high speed, and frequent parking is very influencing the printing quality, so good material is the key!
2: Sticky (Pa) rubber failure
Because our factory mainly makes its own periodicals, so the paper is generally more fixed, mainly 70g offset, 70g, 80g light coating, 95g, 105g, 128g, 157g high-bright double copper, for our regular point paper, light coating is a comparison Difficult to walk a kind of paper, due to its own nature, it is easy to cause the failure of the sticky rubber, generally will add a certain amount of ink in the ink, reduce the viscosity of the ink, there is the pull gauge must adjust the appropriate, a paper However, if it is not pulled, it will easily cause the failure of the sticky eraser, because in addition to the normal printing area on the eraser, whether it is on the back or on the outside of the rubber, there will be accumulated excess ink, and the stickiness will be relatively large, and it will stick more easily. And tear the paper, causing the failure of viscous rubber, but sometimes when the situation is serious, there is also a way to compare benzene, is to wash the rubber!
After sticking the rubber, the machine will continue to run, but the printed things are all waste products, so this requires people who want to see samples must be diligently sampled to avoid excessive waste of paper due to sticky eraser problems!
3: Pressure rubber
Damaged rubber blanket is what we commonly call pressure rubber. After the rubber is pressed, the color of the pressed color group will not be printed on the place or the dots will be lost. This may cause the failure of the pressing rubber, which may be caused by viscous rubber. It is also possible. For other reasons, the pressure is generally not very strong. After the rubber is loosened, there is a place where the reducing agent is pressed. If it is too severe, and the reducing agent is not used, it is necessary to remove the rubber and remove the rubber. Press the place where the pad, if the rubber is pressed is very serious, the pad does not need to replace the rubber, but sometimes some special circumstances, but also use some special treatment methods, such as: If the pressure on the mouth, then also You can use the "by the rubber" method, that is, drag the hair loose, in the bite of the mouth tightly, to borrow slightly to bite the mouth, but the premise of the drag rubber is good, sometimes before or after the place of pressure If it is blank, you can use the method of using the eraser.
4: Loading Overprint and Plate Common Faults
When the product is changed, the plates will be replaced. When loading, pay attention to the bite and drag the screws must be loose in place, when the version is inserted into the control hole before and after and around, to plug in, do not leave gaps , otherwise the version will be installed, tighten the screw, the first tightly drag slightly, after the tight bite, tight bite when the middle of the two screws can be tightened, but the two sides can not be tight, otherwise it will be the version Pull out, pull the version of the "loosely changed, tightly on the corner" and "less top Dora" principle, sometimes there will be a dirty version of the failure, generally due to the protection of plastic or other causes, this The plate should be wiped off with a clean paste, commonly known as "kneading" in printing.
5: Discoloration of printed products
In a production, the discoloration of prints often occurs, and it is difficult to eradicate them completely. According to the explanations of the masters and the personal summary, there are the following treatments:
1. First of all, we should check whether the design of the printed matter on the layout is reasonable. For example, put a pattern with a relatively large amount of ink (or a superimposition of a four-color net) on a slightly dragged position. For such a layout design, it is certainly not conducive to high quality printing. The prints should place them in the mouth, which will facilitate the control of tooth decay on the paper and make it easier to print prints that do not change color.
2. If there has been a situation where the printed matter is discolored, do not start the conclusion on the problem of the next printing press itself. You should first look for the cause in the periphery of the printing press. First, use a magnifying glass to observe the dots on the printing plate to check whether it has appeared. The deformation of the outlets, if found in the print version of the network has been a distortion, then the film should be checked to rule out the issue when the film.
3. After eliminating the film problem, you should check whether the ink system has a problem. Check the ink system can use a very simple method. First use the car wash water (can add water) to thoroughly clean the ink path. After stopping, you should check the ink path. Whether there is white crystalline particles exist, if found such substances exist, then there may be discoloration occurs in the printed matter produced by the crystalline material Stackel local discoloration, this color change is often reflected in the partial color of the brush product color. After the car wash did not find these crystalline substances, restart the printing press, hit each ink roller, close the ink roller and water roller by the end of the ink, check whether the pressure reaches the standard, if not, it is recommended that All ink roller pressures have been readjusted and have reached a good state.
4. After the ink system has no problem, check the condition of the waterway, adjust the pressure between the water roller, the metering roller, the water roller, and the hydrophobic roller, and especially adjust the pressure of the intermediate roller. Under insufficient conditions, the intermediate water roller is best not to be used in the printing process.
5. If there is no problem with the ink line, it should be checked whether the rubber pad is the standard. It is recommended that the thickness of the pad should be 35 filaments. The blanket is preferably a branded aluminum strip and the blanket is preferably new. The new blanket is best to be tightened again after a period of use.
6. If the heat still does not solve the discoloration problem after these have been done, then you may want to consider the problem of the teeth. You should clean the dental pads, and it is best to remove the springs for cleaning.
7. Check the condition of the paper under the paper, which includes the adjustment of the paper wind, the flatness of the paper in the front gauge, the fit between the paper and the paper pressure, the operation of the paper conveying belt, and so on.
8. Once you have done this, you can try printing. When you try to print, it is best to choose a better coated paper to try it out, to avoid the effects of paper problems. For the thin paper on the embossed air volume should be as small as possible, for the thick paper to open large.
9. The printed matter after the completion of these may be able to solve the problem of discoloration, of course, can not be resolved, if you do these efforts, the printed matter is still discolored as soon as possible to inform the Heidelberg company for maintenance. Let the problem be solved quickly.