The rapid development of the printing and publishing system has caused the manual plate making to disappear in a short period of time. With the emergence of the computerized workflow of the plate making technology, the manual equipment that has been smashed for a while is gradually disappearing. It is precisely because of the adoption of computer and high-tech direct publishing system that the environmental problems of the plate making workshop have been raised. The formerly used for hand-collecting, nesting, opening of red tear film, white film base, etc. Say goodbye to the workshop. The plate-making environment is a big issue, and the environment of the plate-making workshop has a very important impact on the health, mental state and product quality of the staff.
From a local perspective, a clean and tidy working environment is the most important foundational project to reduce waste, increase productivity and reduce product defect rates. In some well-known plate-making companies, not only the overall layout is aesthetically pleasing, but also the ergonomics of employees' work status, so that every work point gives a comfortable feeling.
The average person thinks that the workshop is to roar and the sound of the human beings, in order to show the busyness of production, but now the opposite is true, especially the need for the plate making workshop is no longer noisy, but more quiet, but it is not a thing to be quiet. Easy thing. In a number of factors affecting the environment, we have chosen seven aspects of temperature, humidity, dust, smell, lighting, noise, and radiation.
First, the right temperature makes people feel refreshed and the equipment works smoothly.
The fluctuations of temperature not only affect people's emotions, but also the natural enemies of equipment. People in different work areas have different temperature requirements, but the appropriate temperature generally does not cause people to feel irritated, and the working equipment - In particular, the electro-optical and photo-alignment machines use high-precision glass lenses. Due to the influence of temperature changes, water mist is easily generated on the surface of the lens, which leads to a decrease in clarity when the electric machine is scanned. Although some manufacturers have a large degree of tolerance, in practice, it should be considered to maintain a constant value within its tolerance. Usually, the plate making workshop is divided into a production center, an output center, and an electric sub-center. The heat dissipation of the equipment has an inconsistent effect on the space, and the required temperature values ​​are also different, but they must be kept within the standard range.
Second, proper humidity can eliminate static fatigue of people and machines
Humidity reacts to the amount of moisture in the air, expressed as a percentage. The moisture content is too high, generally considered to be more than 80%, people feel more humid, the surface capacity of the machine produces water drops, especially in the machine near the ground part, not easy to maintain, the time is prone to rust; and the moisture content is too low, generally It is considered that less than 40%, people feel dry, and the machine runs very easily to generate static electricity. From the working state of the equipment, the upper and lower pieces of the phototypesetting machine are easily affected by static electricity, and if the corresponding static elimination equipment is not paid during maintenance, It is easy to cause electrostatic breakdown of the electronic circuit; the proof is affected by the humidity, the paper is easily deformed, resulting in inaccurate overprinting and dot enlargement. It is generally adjusted with an industrial humidifier and an industrial dehumidifier to control the percentage of humidity.
Third, the gradual accumulation of dust is the enemy of the equipment in the process of operation
Dust not only directly affects people's breathing, but also in the case of excessive dust, computer and plate making equipment are extremely vulnerable. Due to the extremely fine dust in the workshop, it is easily affected by the exhaust air dissipating device of the computer and the photo-discharging equipment. It is easy to accumulate on the circuit board and the air inlet. The accumulated dust can become a transient conductor if it is disturbed by the external temperature and humidity. Most electronic components are broken down and the short circuit of the board is caused by the accumulation of dust. To solve the problem of dust accumulation in the workshop, the main purpose is to keep the ground clean and prevent the invasion of foreign dust. In addition, the computer and electronic equipment should be regularly dusted and the surface maintenance of all equipment should be guaranteed. [next]
4. Odor is the most sensitive reaction of human beings. Although the machine can't distinguish the smell, the irritating gas can directly damage the machine.
In the plate making workshop, there are three main sources of odor: on the one hand, various cleaning and manuscript liquids in the electric sub-station, because they are not toxic and spread rapidly in the flowing air, it is not easy to affect people (but some The cleaning agent must wear gloves during the operation and ensure that it does not flow to the surface of the metal object);
On the other hand, it is the developing solution and fixing solution of the output workshop. The developing solution is oxidized to different degrees due to the influence of temperature and the length of contact with oxygen. If the container of the developing solution is not tightly sealed, the smell of the developing solution is easily diffused to In the air, the temperature is slightly higher, and the condensed mist adheres to the metal part of the developing machine, causing the metal part to oxidize and deteriorate, causing equipment failure.
Therefore, in the process of development, we must pay attention not to expose it for a long time, especially after heating, we must pay attention to not open the lid easily; there is also one aspect of the smell source is the proofing department. The proofing ink and the liquid for cleaning the ink are very pungent, but generally do not cause great harm to people, so the proofing department must pay attention to the local and overall exhaust problems. When cleaning the ink, be sure to open the exhaust fan food package. The cleaned ink and the rag that wipes the ink should be placed in a closed container to minimize the exposure of various volatile substances to the air, so effectively resist the odor. The method is proper venting and effective sealing.
In addition, the odor is also derived from the back of high-temperature devices, such as electric lamps, high-voltage devices for displays, and laser tubes for photo-aligners. These devices also emit an odor as the temperature rises, but because different machines employ different methods of prevention, such odor sources generally do not cause undesirable reactions. [next]
5. Lighting is a big problem in the plate making workshop. It not only affects the excessive packaging of the environment, but more importantly, it also affects the quality of the product.
Printing plate making is an industry that requires extremely high lighting conditions. In particular, the electric power and proofing departments need to use high-lighting illumination sources to ensure the color reproduction and adjustment of the original and accurately observe the color of the printed product. For printing lighting, the latest ISO3664 standard has been introduced 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 in accordance with CIE regulations. The former is a daylight color with a color temperature of 6500k, the color rendering index is above 90, which is suitable for observing reflective originals, and the latter is a simulation with a color temperature of 5000k. Daylight, the color rendering index is also 90 or more print detection, suitable for observing the light source of the transmitted original.
In the color separation, proofing and output departments, if you want to get the best observation of the manuscript, you must arrange the standard light source locally or in the whole, and require the corresponding illumination. Because the environmental color of the sample image and the background color of the sample will affect the observation when the sample is observed, the color of the shop 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 viewing platform is required to ensure the accuracy of the color observation of the product.
In short, to ensure stable and consistent quality control of observation conditions, the following factors must be met:
1. Spectral energy distribution of the illumination source;
2. The luminous intensity and uniformity of the illumination source;
3. Observe the conditions of the environment and the lighting environment;
4. Stability of the lighting environment.
Sixth, the biggest hazard of noise is distracting people's attention, making people prone to fatigue, and the abnormal noise of equipment is also one of the causes of their own failure.
The noise in the plate making workshop comes from the high-speed electric sub-roller and the photo-discharge drum, the fan of the exhaust device, the mechanical rolling of the proofing machine, and the sound of the fluorescent lamp ballast. Printing education in all the noise, sharp high-frequency sound is irritating, and 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, the noise generating equipment is relatively small, but in daily maintenance, the lubrication of the mechanical equipment must be done to ensure the normal operation of the equipment and the quiet working environment.
There are also ways to eliminate noise:
1. Commonly used lubricating oil;
2. Clean the ground metal;
3. Replace the noise source components.
Radiation is a high-tech and serious issue. However, prepress plate making equipment, including various laser light sources, are produced strictly according to relevant standards, and the products have relevant certification licenses, so the radiation problem can be avoided in the plate making workshop.
The above analysis of the seven factors that exist in the plate making workshop and affect the environment. Regarding environmental issues, we have to mention the impact of 5S activities on the plate making workshop. 5S is the first letter of the five Japanese words Roman Pinyin that is sorted, reorganized, cleaned, cleaned, and cultivated. It has the following effects:
1. Enhance corporate image;
2. Enhance the sense of belonging of employees;
3. Reduce waste;
4. Security guarantee;
5. Efficiency improvement;
6, quality assurance.
For the environmental problems of the plate making workshop, 5S is the best countermeasure. The workshop environment should be created from the mood of the people. The bright, clean and tidy workshop naturally gives employees and customers a good mood.
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