The rapid development of the printing and publishing system has made manual plate making disappear in a short period of time. With the advent of computerized workflows in plate making technology, the once-popular manual equipment is gradually disappearing. It is precisely because of the adoption of computers and high-tech direct publishing systems that the environmental problems of the platemaking workshop have been raised. The formerly used for manual collage, copying, open grid red tear film, white film base, etc. Farewell to the workshop. The environment of plate-making is a big issue. The environment of the plate-making workshop has a very important influence on the health, mental state and product quality of the workers.
From a local perspective, a neat and clean working environment is the most important basic project to reduce waste, increase productivity, and reduce product defect rates. In some well-known plate-making companies, not only the overall layout pays attention to the beautiful environment, but also considers the working status of employees from the ergonomic point of view, so that each working point gives people a comfortable feeling.
Most people think that the workshop must have roaring machines and vocals to show the busyness of production, but now it is the opposite. Especially for the platemaking workshop, what is needed is no longer noisy, but more quiet, but it is not a real thing to be quiet. Easy thing. Among the many factors that affect the environment, we have selected seven aspects of temperature, humidity, dust, odor, lighting, noise, and radiation for discussion.
1. Appropriate temperature makes people refreshed and the equipment works smoothly
The fluctuation of temperature not only affects people's emotions, but also is the natural enemy of the equipment. People in different working areas have different requirements for temperature, but the appropriate temperature generally does not cause people to feel irritable, and the equipment that works- Especially for electronic extensions and imagesetters, the electronic optical systems all use high-precision glass lenses. Due to temperature changes, the surface of the lenses is prone to water mist, which leads to a reduction in the resolution of the electronic extensions when scanning; Although the tolerance of some manufacturers is large, in practice, it should be considered that a constant value is maintained within its tolerance. Generally, the plate making workshop is divided into a production center, an output center, and an electrical sub-center. The heat dissipation of the equipment has inconsistent effects on the space. The required temperature values ​​are also different, but they must be kept within the standard range.
2. Appropriate humidity can eliminate static fatigue of people and machines
Humidity reflects the moisture content in the air, expressed as a percentage. If the moisture content is too high, it is generally considered to be more than 80%, and people feel that it is relatively wet. The surface of the machine produces water droplets, especially when the machine is near the ground, it is not easy to maintain, and it is easy to rust over time. It is believed that if it is less than 40%, people feel dry, and the machine is very easy to generate static electricity. From the working state of the equipment, the upper and lower plates of the imagesetter are easily affected by static electricity. If you do not pay attention to the corresponding static elimination equipment during maintenance, It is easy to cause electrostatic breakdown of electronic circuits; proofing is affected by humidity, the paper is easily deformed, resulting in inaccurate overprinting and dot expansion. Generally, industrial humidifier and industrial dehumidifier are used to adjust and control the percentage of humidity. [next]
3. The gradual accumulation of dust is the enemy of the equipment during operation
Dust not only directly affects human breathing, in the case of too much dust, computers and plate-making equipment are easily damaged. Because the dust in the workshop is very fine, affected by the exhaust heat dissipation devices of computers and photo-setting equipment, it is easy to accumulate on the circuit board and the air inlet. If the accumulated dust is disturbed by the external temperature and humidity, it can become an instant conductor The breakdown of most electronic components and the short circuit of the circuit board are caused by the accumulation of dust that cannot be removed. The solution to the accumulation of dust in the workshop is mainly to keep the ground clean and prevent the intrusion of foreign dust. In addition, the computer and electronic equipment must be regularly dedusted, and the daily maintenance of the surface of all equipment should be ensured.
4. Smell is the most sensitive reaction of human beings. Although the machine cannot distinguish the smell, the irritating gas can directly damage the machine
In the platemaking workshop, there are three main sources of odor: on the one hand, various cleaning and drafting fluids in the electrical sub-workshop, because they are not toxic and spread rapidly in the flowing air, it is not easy to affect people (but some During the operation of the cleaning agent, you must wear gloves and ensure that it does not flow to the surface of the metal object); on the other hand, the developer and fixer in the workshop are output. The developer is different due to the temperature and the length of time it is exposed to oxygen To a certain degree of oxidation, if the developer container is not tightly capped, the odor of the developer will easily diffuse into the air, and the temperature will be slightly higher. The condensed mist will adhere to the metal part of the developing machine, causing the metal part to oxidize and deteriorate, causing equipment failure . Therefore, during the development process, be careful not to expose for a long time, especially after heating, it should be careful not to easily open the lid; there is another aspect of the odor source is the proofing department. Proofing ink and cleaning ink liquid are very pungent, but generally do not cause great harm to people, so the proofing department must pay attention to local and overall exhaust problems. When cleaning the ink, be sure to open the food packaging of the exhaust fan. The cleaned ink and the cloth for wiping the ink should be put in a closed container together to minimize the exposure of various volatile odor substances to the air, so the odor is effectively resisted The method is proper exhaust and effective closure.
In addition, the odor also comes from behind high-temperature devices, such as electric lights, high-voltage devices for displays, and laser tubes for imagesetters. As the temperature increases, these devices will also emit odors, but because different machines use different prevention methods, such odor sources generally do not cause adverse reactions.
5. Lighting is a big problem in the plate-making workshop. It not only affects the excessive packaging of the environment, but also affects the quality of the product. Printing and plate-making is an industry that requires extremely high lighting conditions, especially for the electrical distribution and proofing departments. Only with the high-color rendering light source can the color reproduction and adjustment of the original and accurate observation of the color of the printed product be guaranteed. For printing lighting, the latest ISO3664 standard has been issued internationally, and the domestic printing industry also has a set of strict evaluation standards.
The lighting in the plate-making workshop can be divided into D65 light source and D50 light source that comply with CIE regulations. The former is daylight color with a color temperature of 6500k and the color rendering index is more than 90, which is suitable for observing reflective manuscripts. Daylight, color rendering index is also above 90 print detection, suitable for observing the light source of the transmitted original.
In the color separation, proofing and output departments, if you want to obtain the best observation of the manuscript, you must arrange the standard or partial light source, and require the corresponding illuminance. Because when observing the sample, the environmental color of the sample map and the background color of the sample will affect the observation, so the color of the workshop wall and its internal facilities should be light gray or white to prevent the surrounding environment from adversely affecting the lighting.
Of course, to achieve higher lighting requirements, a special observation platform is also needed, so as to ensure the accuracy of color observation of the product.
In short, to ensure stable and consistent quality control of the observation conditions, you must have the following factors:
1. Spectral energy distribution of lighting source;
2. The luminous intensity and uniformity of the lighting source;
3. Observation environment and lighting environment conditions;
4. Stability of lighting environment. [next]
Sixth, the biggest hazard of noise is to distract people's attention and make people prone to fatigue. At the same time, the abnormal noise of the equipment is also one of the reasons for its own failures
The noise in the platemaking workshop comes from the high-speed electric sub-drum and photo-setting drum, the fan of the exhaust device, the mechanical rolling of the proofer, and the sound of the fluorescent lamp ballast. Print education in all the noise, the sharp high frequency sound makes people irritable, and the high frequency sound is caused by the lack of oil in electronic components and machinery.
If the prepress company is separated from the printing company, there are relatively few noise-generating equipment, but in daily maintenance, it is necessary to do a good job of lubrication of mechanical equipment to ensure that the equipment works normally and the working environment is quiet.
There are also the following methods to eliminate noise:
1. Commonly used lubricants;
2. Clean grinded metal objects;
3. Replace the noise source component.
Radiation is a high-tech and serious problem. However, pre-press plate-making equipment, including all kinds of laser light sources, are produced in strict accordance with the relevant standards, and the products have relevant certifications and licenses, so radiation problems can be avoided in the plate-making workshop.
The above analyzes seven factors that exist in the platemaking workshop and affect the environment. Regarding environmental issues, we have to mention the impact of the 5S activity on the platemaking workshop. 5S is the first letter of the 5 Japanese words Roman Pinyin for finishing, rectifying, cleaning, cleaning, and training. Its effectiveness is:
1. Improve corporate image;
2. Improve employees' sense of belonging;
3. Reduce waste;
4. Safety guarantee;
5. Efficiency improvement;
6. Quality assurance.
For environmental issues in the platemaking workshop, 5S is the best solution. The workshop environment should be created in terms of human mood. A bright, clean and tidy workshop naturally gives employees and customers a good mood.
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