CTP brings you benefits, it may also bring you trouble, the machine is broken, the professional company can't go to the scene right away, and you have a headache. If you really encounter these problems, you may wish to take care of it from daily maintenance. In order to eliminate machine failures in the production process, the following 20 experiences may help you.
1, maintain normal temperature and humidity
Temperature and humidity are very important for CTP machines. Excessive temperature can cause accelerated aging of heat sensitive and photosensitive laser heads. Excessive humidity is quite unfavorable for the cleaning of plates and machines. Therefore, CTP machines are best at the specified temperature. It is used in the humidity range. If the temperature and humidity are abnormal, it is recommended that you adjust the environment quickly. The normal CTP room temperature is 20±2°C and the humidity is 50%±10. The comfortable environment not only ensures the normal operation of the machine but also makes the product quality. stable.
2, to ensure good cleaning, remove excess oil
Cleaning not only ensures that the surface of the machine is new, but more importantly, it reduces the adsorption of dust and dirt on the surface, and at the same time reduces the occurrence of scratches on the plate. The internal cleaning can make the circuit light path work within the normal range. Clean and monthly internal cleaning must be included in your production plan, and the equipment failure rate will drop by 20-30%.
The key position of CTP equipment operation is screw and slide. These two places use different lubricating oils. In the long-term lubrication process, the lubricating oil is easy to form due to the influence of temperature, dust and friction. Oil pollution directly causes mechanical obstruction and local temperature rise, which is an important factor in mechanical failure of equipment. Therefore, when lubricating oil is used, it is usually necessary to remove old oil in about three months, re-add new lubricant, and pay attention to refueling. The amount and uniformity.
3. Reduce unnecessary vibration
Vibration not only causes the failure of the equipment itself, but also causes problems in the quality of the product. After effectively ensuring that the equipment is installed correctly, it must also regularly check its stability and level. The accuracy of the base and screw of the CTP equipment is very high. If the rod stepping motor is affected by the vibration, it will directly drive the chain reaction of the laser component. At the same time, the shaking laser will cause the white line on the plate to be unplanned, so reducing the vibration is an important operation to ensure the output of the machine plate.
4, to ensure the normal input voltage
The operating voltage of a typical CTP device will have a range value. It is normal to work in the range of 220V +/- 10V. If there is an out-of-range fluctuation when the external voltage is supplied, the parameters of the component during operation will fluctuate with the voltage. However, bending, long-term occurrence of this phenomenon will cause the fixed working point of the component to drift, resulting in electrical parameter drift phenomenon, so it is recommended to install the CTP, it is best to equip with the corresponding voltage regulator equipment to make the CTP machine's circuit system stable. Working in the state, of course, if you can match the UPS with voltage regulation is the best choice.
5. Do not plug in the CTP device connected to the computer.
The CTP platesetter is generally connected to the computer in three ways. One is a SCSI connection, the other is a USB connection, and the third is a network cable connection. Regardless of the connection method, the manufacturer considers the distance between the machine and the host. Connection speed and security, although the connection between USB and network cable also takes into account the charged plug-in function, some programs of the machine will issue backup instructions to the computer during normal shutdown, so as not to cause improper shutdown or the like. The machine is faulty, and the devices are plugged in midway. One is because the two machines are working normally. The two reasons are that if there is a voltage difference between the two sides, it will cause fatal errors. Therefore, the CTP machine is under normal working conditions. Never plug in the device cable.
6. Do not interrupt the operation and turn off the power when the machine is running normally.
In normal operation of CTP equipment, the connection data, the mutual voltage, the running motor and the machine's rotation balance tend to be stable. If the operation is suddenly interrupted, not only will the power supply impact, but also the rotary motor and motor drive, as well as the PS version, Important parts such as rollers and plates can cause serious damage. At the same time, the laser power supply, light valve and focal length system will be affected by sudden interruption. Therefore, in normal operation, do not disconnect the power supply easily. Of course, if there is an emergency. You can press the machine's emergency stop button to keep people and machines safe.
7. It is forbidden to stack things in CTP and related equipment and surrounding areas.
The panel and the upper cover of the CTP device are relatively fragile, and some are even used for ventilation and heat dissipation. If the original and other debris are stacked on it, it may fall into the machine or block the heat sink, causing the internal temperature of the machine to rise. At the time of maintenance, the fan that had encountered the machine sucked a PS version of the paper separator and caused the temperature to rise. The CTP machine left enough space during installation, so do not pile up debris around the machine, let alone stand on the machine. Do other operations.
8, it is best to bring cotton gloves or thumb sets when taking the plate
The surface of the new plate is a chemical substance. Although most plates have a protective layer on the surface, if you use the plate directly to remove the plate, it is easy to leave fingerprints on the plate, because the fingers may be exposed during work. Oil stains, sweat stains, etc., which cause the imprinted plate after exposure, will have a serious impact on the post-printing. Therefore, when using the CTP plate, in the specification process file, it is best to take it with the plate. Gloves also ensure the safety of the fingers of the version.
9, properly clean the laser head
The most critical part of the thermal CTP laser head is the laser lens. Although the heat will not lead to the quality problem of the output of the plate due to dust, the dust left by the plate after the high temperature becomes tar and adheres to the lens. It will definitely cause serious strips or partial defects in the plate. In this case, it is required to use a proper proportion of chemicals to clean the lens. It is recommended to use a 1:4 ratio of alcohol and ether to clean the lens. The surface, which guarantees the quality of the output, requires the professional staff to complete the work, but if you have enough confidence, you can still do it easily.
10, use Ghost to deal with the virus system
When installing the process software, the on-site software engineer will leave two different Ghost files for the installed system and process under the Backup disk. If your machine is unfortunately infected with a virus or the machine's system is crashed, you can use it. DOS boot machine running Ghost, complete repair Windows system or process software, before the recovery, I suggest you even leave the Ghost backup file, even if it is a bad system, in case you need it, but more importantly, you need to install one. Set up Norton's anti-virus software to protect your system, or install a real-time backup system to ensure the system and data are normal. [next]
11, system software and processes should not be installed on the same hard drive
In fact, when installing a larger process, the system needs to be installed on a separate hard disk, and the main body of the process needs to be installed on another hard disk. The data and temporary files need to be placed separately in different locations. In this way, if there is a problem in different places, it can be repaired in a targeted manner. If the system and process are installed on the same hard disk, once the system crashes, the damage will not be exchanged, so the proper partition storage file is your backup. The best choice.
12. Back up the relevant data and software when changing parameters.
After the installation of the CTP machine, if the machine is working properly, it is best to back up all the parameters, and at the same time engrave the CD for later use. In the process of use, if you need to change the process settings, the internal parameters of the machine, the processor For parameters and other situations, you need to make a record. As long as you carefully record and back up, you can ensure that your system works under normal conditions. Even if something goes wrong, it can be recovered in a short time.
13. Avoid excessively long connections and do not pile up with power lines.
Although the CTP platesetter has a long cable and good shielding function, if the wires are not twisted together for a long time, do not bundle them with the power cable, and bundle the different power cables and The data line not only causes inexplicable problems due to electromagnetic interference, but also the long-term heating of the power line damages the data line, and it is the best choice to avoid using a long connection line during installation.
14, the connected equipment should be fully grounded
Grounding is an important protection measure for precision equipment. It is also an important power standard for personnel safety. In CTP-connected equipment, if it is a fully automatic machine, all connected equipment must be fully grounded, and each machine must be guaranteed. They must also be connected to each other so that they do not cause unnecessary troubles due to the grounding problem of the power supply when using the device. At the same time, each interconnected device must use the same phase voltage. Such multiple protection can make the circuit of the CTP device. The board works safer.
15, do not easily change the development conditions
In previous related articles, it may be mentioned that if you are unable to change the parameters of the CTP machine in case of emergency, you can adjust the development conditions to adjust the output of the plate. This situation is only suitable for emergency use, in normal In the case, if the development conditions, such as development temperature, time, brush rotation speed, and pressure, are easily changed, the parameters of the development process are rather unfavorable for printing, and although the development conditions are changed, the data of the plate is stabilized on the surface, but for the printing resistance. And the process of inking may be affected. It is recommended that in the absence of a real need, do not easily change the normal development conditions to match the plate or machine.
16, do not reuse air, water and development filter
The air filter element in the CTP machine is mainly used to remove dust and oil in the air. If it is used repeatedly, it will block the speed of the airflow, and the attached dust will enter the machine to damage the laser, circuit board and other components.
The water and developing filter are mainly used to filter impurities in the liquid. After a period of use, a large amount of impurities are adsorbed on the filter cotton, which slows down the circulating liquid. Therefore, the filter can only be replaced in any case. Instead of reusing it.
17, timely replenishment of CTP and coolant in the developing machine
The coolant of the water cooling system of the CTP platesetter is used for cooling the thermal laser head, and the cooling device in the developing machine is used to adjust the temperature. The amount of the coolant directly affects the cooling temperature. Usually, the coolant They are all made colored. If there is liquid leakage, it is easy to find, but even if the liquid does not leak, it will evaporate with the use time. Therefore, it is recommended to check the cooling device every three months or so. Also add some coolant, if possible, it is best to replace the coolant.
18, TP plate should be placed flat or diagonal, rather than placed vertically
In the production process, since the aluminum coil is circularly cut, the process of flattening or stretching is required. If the flattened plate has been placed vertically, it is likely that the head will be placed. Or the deformation of the tail, which makes it difficult for the plate to enter the head of the CTP roller, leading to the stencil, the position of the head clip is not fully exposed, so it is better to reduce the vertical placement of the plate when storing the plate, and There is no waste caused by unevenness of the plate.
19. After the machine is shut down for a period of time and then turned on, be sure to rinse a few pieces of scrap.
When the PS version of the developing machine is stopped, the precipitate washed out on the plate will adhere to the rubber roller. If the stopping time is long, after a sudden start, there will be a lot of flushing of the new plate without full circulation. The dirt is transferred to the plate with the drive roller, causing the plate to be unusable. Therefore, after deactivating the processor for a period of time, be sure to rinse the waste plate multiple times to allow the developer to circulate and filter the dirt thoroughly. If the license filter is replaced in time, the output plate is normal.
20, use the appropriate version of the PS file to process the output
The PS version has ps1, ps2 to the current ps3 version from the beginning to the present. If the process you use is the latest, it may support different versions, and if the version is low, the file using PS will not be converted to the appropriate PDF. , or after the file is converted, the occurrence of word drop, misplacement, etc., if only a small range of errors, it is difficult to check out in the later screen and blue paper, so if you use the appropriate version, you can avoid these problems, if It is not necessary, nor can you blindly upgrade the process software to make your work more stable.
In the process of using CTP, different companies may deal with all kinds of strange problems, but proper maintenance can reduce the occurrence of failures. The above mentioned 20 possible phenomena may not be applicable to you, but prevent them from Unburned is really important for production equipment. These important experiences tell us that all the possibilities may occur during the use of the equipment. Only when the equipment is kindly treated will it have a better return.
CTP brings you benefits, it may also bring you trouble, the machine is broken, the professional company can't go to the scene right away, and you have a headache. If you really encounter these problems, you may wish to take care of it from daily maintenance. In order to eliminate machine failures in the production process, the following 20 experiences may help you.
1, maintain normal temperature and humidity
Temperature and humidity are very important for CTP machines. Excessive temperature can cause accelerated aging of heat sensitive and photosensitive laser heads. Excessive humidity is quite unfavorable for the cleaning of plates and machines. Therefore, CTP machines are best at the specified temperature. It is used in the humidity range. If the temperature and humidity are abnormal, it is recommended that you adjust the environment quickly. The normal CTP room temperature is 20±2°C and the humidity is 50%±10. The comfortable environment not only ensures the normal operation of the machine but also makes the product quality. stable.
2, to ensure good cleaning, remove excess oil
Cleaning not only ensures that the surface of the machine is new, but more importantly, it reduces the adsorption of dust and dirt on the surface, and at the same time reduces the occurrence of scratches on the plate. The internal cleaning can make the circuit light path work within the normal range. Clean and monthly internal cleaning must be included in your production plan, and the equipment failure rate will drop by 20-30%.
The key position of CTP equipment operation is screw and slide. These two places use different lubricating oils. In the long-term lubrication process, the lubricating oil is easy to form due to the influence of temperature, dust and friction. Oil pollution directly causes mechanical obstruction and local temperature rise, which is an important factor in mechanical failure of equipment. Therefore, when lubricating oil is used, it is usually necessary to remove old oil in about three months, re-add new lubricant, and pay attention to refueling. The amount and uniformity.
3. Reduce unnecessary vibration
Vibration not only causes the failure of the equipment itself, but also causes problems in the quality of the product. After effectively ensuring that the equipment is installed correctly, it must also regularly check its stability and level. The accuracy of the base and screw of the CTP equipment is very high. If the rod stepping motor is affected by the vibration, it will directly drive the chain reaction of the laser component. At the same time, the shaking laser will cause the white line on the plate to be unplanned, so reducing the vibration is an important operation to ensure the output of the machine plate.
4, to ensure the normal input voltage
The operating voltage of a typical CTP device will have a range value. It is normal to work in the range of 220V +/- 10V. If there is an out-of-range fluctuation when the external voltage is supplied, the parameters of the component during operation will fluctuate with the voltage. However, bending, long-term occurrence of this phenomenon will cause the fixed working point of the component to drift, resulting in electrical parameter drift phenomenon, so it is recommended to install the CTP, it is best to equip with the corresponding voltage regulator equipment to make the CTP machine's circuit system stable. Working in the state, of course, if you can match the UPS with voltage regulation is the best choice.
5. Do not plug in the CTP device connected to the computer.
The CTP platesetter is generally connected to the computer in three ways. One is a SCSI connection, the other is a USB connection, and the third is a network cable connection. Regardless of the connection method, the manufacturer considers the distance between the machine and the host. Connection speed and security, although the connection between USB and network cable also takes into account the charged plug-in function, some programs of the machine will issue backup instructions to the computer during normal shutdown, so as not to cause improper shutdown or the like. The machine is faulty, and the devices are plugged in midway. One is because the two machines are working normally. The two reasons are that if there is a voltage difference between the two sides, it will cause fatal errors. Therefore, the CTP machine is under normal working conditions. Never plug in the device cable.
6. Do not interrupt the operation and turn off the power when the machine is running normally.
In normal operation of CTP equipment, the connection data, the mutual voltage, the running motor and the machine's rotation balance tend to be stable. If the operation is suddenly interrupted, not only will the power supply impact, but also the rotary motor and motor drive, as well as the PS version, Important parts such as rollers and plates can cause serious damage. At the same time, the laser power supply, light valve and focal length system will be affected by sudden interruption. Therefore, in normal operation, do not disconnect the power supply easily. Of course, if there is an emergency. You can press the machine's emergency stop button to keep people and machines safe.
7. It is forbidden to stack things in CTP and related equipment and surrounding areas.
The panel and the upper cover of the CTP device are relatively fragile, and some are even used for ventilation and heat dissipation. If the original and other debris are stacked on it, it may fall into the machine or block the heat sink, causing the internal temperature of the machine to rise. At the time of maintenance, the fan that had encountered the machine sucked a PS version of the paper separator and caused the temperature to rise. The CTP machine left enough space during installation, so do not pile up debris around the machine, let alone stand on the machine. Do other operations.
8, it is best to bring cotton gloves or thumb sets when taking the plate
The surface of the new plate is a chemical substance. Although most plates have a protective layer on the surface, if you use the plate directly to remove the plate, it is easy to leave fingerprints on the plate, because the fingers may be exposed during work. Oil stains, sweat stains, etc., which cause the imprinted plate after exposure, will have a serious impact on the post-printing. Therefore, when using the CTP plate, in the specification process file, it is best to take it with the plate. Gloves also ensure the safety of the fingers of the version.
9, properly clean the laser head
The most critical part of the thermal CTP laser head is the laser lens. Although the heat will not lead to the quality problem of the output of the plate due to dust, the dust left by the plate after the high temperature becomes tar and adheres to the lens. It will definitely cause serious strips or partial defects in the plate. In this case, it is required to use a proper proportion of chemicals to clean the lens. It is recommended to use a 1:4 ratio of alcohol and ether to clean the lens. The surface, which guarantees the quality of the output, requires the professional staff to complete the work, but if you have enough confidence, you can still do it easily.
10, use Ghost to deal with the virus system
When installing the process software, the on-site software engineer will leave two different Ghost files for the installed system and process under the Backup disk. If your machine is unfortunately infected with a virus or the machine's system is crashed, you can use it. DOS boot machine running Ghost, complete repair Windows system or process software, before the recovery, I suggest you even leave the Ghost backup file, even if it is a bad system, in case you need it, but more importantly, you need to install one. Set up Norton's anti-virus software to protect your system, or install a real-time backup system to ensure the system and data are normal. [next]
11, system software and processes should not be installed on the same hard drive
In fact, when installing a larger process, the system needs to be installed on a separate hard disk, and the main body of the process needs to be installed on another hard disk. The data and temporary files need to be placed separately in different locations. In this way, if there is a problem in different places, it can be repaired in a targeted manner. If the system and process are installed on the same hard disk, once the system crashes, the damage will not be exchanged, so the proper partition storage file is your backup. The best choice.
12. Back up the relevant data and software when changing parameters.
After the installation of the CTP machine, if the machine is working properly, it is best to back up all the parameters, and at the same time engrave the CD for later use. In the process of use, if you need to change the process settings, the internal parameters of the machine, the processor For parameters and other situations, you need to make a record. As long as you carefully record and back up, you can ensure that your system works under normal conditions. Even if something goes wrong, it can be recovered in a short time.
13. Avoid excessively long connections and do not pile up with power lines.
Although the CTP platesetter has a long cable and good shielding function, if the wires are not twisted together for a long time, do not bundle them with the power cable, and bundle the different power cables and The data line not only causes inexplicable problems due to electromagnetic interference, but also the long-term heating of the power line damages the data line, and it is the best choice to avoid using a long connection line during installation.
14, the connected equipment should be fully grounded
Grounding is an important protection measure for precision equipment. It is also an important power standard for personnel safety. In CTP-connected equipment, if it is a fully automatic machine, all connected equipment must be fully grounded, and each machine must be guaranteed. They must also be connected to each other so that they do not cause unnecessary troubles due to the grounding problem of the power supply when using the device. At the same time, each interconnected device must use the same phase voltage. Such multiple protection can make the circuit of the CTP device. The board works safer.
15, do not easily change the development conditions
In previous related articles, it may be mentioned that if you are unable to change the parameters of the CTP machine in case of emergency, you can adjust the development conditions to adjust the output of the plate. This situation is only suitable for emergency use, in normal In the case, if the development conditions, such as development temperature, time, brush rotation speed, and pressure, are easily changed, the parameters of the development process are rather unfavorable for printing, and although the development conditions are changed, the data of the plate is stabilized on the surface, but for the printing resistance. And the process of inking may be affected. It is recommended that in the absence of a real need, do not easily change the normal development conditions to match the plate or machine.
16, do not reuse air, water and development filter
The air filter element in the CTP machine is mainly used to remove dust and oil in the air. If it is used repeatedly, it will block the speed of the airflow, and the attached dust will enter the machine to damage the laser, circuit board and other components.
The water and developing filter are mainly used to filter impurities in the liquid. After a period of use, a large amount of impurities are adsorbed on the filter cotton, which slows down the circulating liquid. Therefore, the filter can only be replaced in any case. Instead of reusing it.
17, timely replenishment of CTP and coolant in the developing machine
The coolant of the water cooling system of the CTP platesetter is used for cooling the thermal laser head, and the cooling device in the developing machine is used to adjust the temperature. The amount of the coolant directly affects the cooling temperature. Usually, the coolant They are all made colored. If there is liquid leakage, it is easy to find, but even if the liquid does not leak, it will evaporate with the use time. Therefore, it is recommended to check the cooling device every three months or so. Also add some coolant, if possible, it is best to replace the coolant.
18, TP plate should be placed flat or diagonal, rather than placed vertically
In the production process, since the aluminum coil is circularly cut, the process of flattening or stretching is required. If the flattened plate has been placed vertically, it is likely that the head will be placed. Or the deformation of the tail, which makes it difficult for the plate to enter the head of the CTP roller, leading to the stencil, the position of the head clip is not fully exposed, so it is better to reduce the vertical placement of the plate when storing the plate, and There is no waste caused by unevenness of the plate.
19. After the machine is shut down for a period of time and then turned on, be sure to rinse a few pieces of scrap.
When the PS version of the developing machine is stopped, the precipitate washed out on the plate will adhere to the rubber roller. If the stopping time is long, after a sudden start, there will be a lot of flushing of the new plate without full circulation. The dirt is transferred to the plate with the drive roller, causing the plate to be unusable. Therefore, after deactivating the processor for a period of time, be sure to rinse the waste plate multiple times to allow the developer to circulate and filter the dirt thoroughly. If the license filter is replaced in time, the output plate is normal.
20, use the appropriate version of the PS file to process the output
The PS version has ps1, ps2 to the current ps3 version from the beginning to the present. If the process you use is the latest, it may support different versions, and if the version is low, the file using PS will not be converted to the appropriate PDF. , or after the file is converted, the occurrence of word drop, misplacement, etc., if only a small range of errors, it is difficult to check out in the later screen and blue paper, so if you use the appropriate version, you can avoid these problems, if It is not necessary, nor can you blindly upgrade the process software to make your work more stable.
In the process of using CTP, different companies may deal with all kinds of strange problems, but proper maintenance can reduce the occurrence of failures. The above mentioned 20 possible phenomena may not be applicable to you, but prevent them from Unburned is really important for production equipment. These important experiences tell us that all the possibilities may occur during the use of the equipment. Only when the equipment is kindly treated will it have a better return.
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