The lighting problem is a point that needs to be considered during the operation of the printing press. This is not only because the press is a mechanical device that runs at high speeds and accurately overprints, it needs sufficient light for monitoring, and because its products are directly related to the lighting conditions. When it comes to the lighting problem in the printing shop, it is necessary to consider the lighting conditions between the machine operating area, the color observation area, and each printing group.

In general, about 800 lux (lx) or 80 foot (ft) candlelight illumination is required around the press. This lighting condition allows the operator to see the situation around the press. According to experience, it is best to suspend two rows of fluorescent lamps above the printing press to maintain a vertical distance of about 70 cm from the printing press, and to separate the horizontal distances on both sides by about 30 cm. In this way, the lamps and printers form an angle, and the lighting The effect will be very good.

The lighting problem in the printing shop should receive great attention and proper handling of the enterprise

For the color observation area, the sunlight in the press room must be eliminated first because the sunlight interferes with the judgment of the color and the strong sunlight will cause the ink roller to harden. Many color printers now use color observation devices. However, it is necessary to prevent procurement or self-made poor quality color observation rooms from being used in the printing shop. In the course of use, the observation room must be changed every 1500 hours.

When using A1 and above format printers, the lighting requirements for each printing unit will be higher to ensure that the operator can see the water in the blank area on the printing plate, which requires good lighting can pass through the machine Cover. At present, many workers working on sheetfed and web presses have high-power fluorescent lighting fixtures with shields, and some use small condenser light sources. When the printing press stops working and the protective device is lifted, it is a good idea to install a fluorescent tube in the machine housing in order to provide good lighting between the units. Some printer manufacturers have adopted this design. In addition, the lamp in this location is very useful when cleaning the plate and installing the blanket.

Proper handling of lighting problems in the printing shop will help smooth production and increase production efficiency.

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