The ASC6050ZK Precise Vacuum UV Exposure Unit is equipped with special UV lamps and an auxiliary vacuum suction device. After placing the screens and well-printed transparency film on the glass, users can close the cover and set the required vacuum and exposure time. This will cause the screens and transparency film to be tightly secured on the glass by evacuating the air from the vacuum chamber, which is separated by a rubber blanket. Once the set time has elapsed, the machine will automatically deflate, and the exposure process will be complete. Users are then advised to turn off the power supply.

The working principle involves screen printing screens being coated with a light-sensitive emulsion using a scoop coater. When the emulsion is dry, the image with a positive print is placed on the screen. After burning the screen, the emulsion that did not receive any UV light will wash out, exposing the tiny pin holes. The surrounding areas that were exposed to UV light will be cured, allowing the ink to pass through the screen onto the substrate.

The vacuum pumping area (sizes of the rubber blanket) is 23.6"27.6" (6070cm), but the optimum screen exposing size is within 19.7"23.6"1.6" (50604cm) by the outer sizes. If the screen is oversized, users are advised to exercise caution when purchasing.

The essential parameters of the ASC6050ZK Precise Vacuum UV Exposure Unit include: - Input Voltage: 110V - Exposure area: 23.6"27.6" (6070cm) (Optimum screen exposing size is within 19.7"23.6"1.6" (50604cm) by the outer sizes.) - Vacuum Degree: －0.08Mpa - Illumination Uniformity: 85% - Lamp Power: 240W - Vacuum Pump Power: 60W - Vacuum Time Setting Range: 0-999s - Exposure Time Setting Range: 0-999s - Machine Size: 33.5"32.5"7.5" (8582.519cm) - Package size: 35"33.5"9.8" (888624.5cm) - Net weight: 66Lb / 30kg - Gross weight: 90.4Lb / 41kg

The timer on the machine can set the exposure time, and after the set time is reached, the machine will automatically turn off the tubes. The timer also has an automatic memory function, so the time will be saved regardless of the number of times the machine is turned on or off. To remove the screen, users can set the release valve after the exposure and then open it.

The machine is equipped with four soft plastic pad feet, which should be placed on the corners of the frame during the vacuum process to prevent the corners of the frame from damaging the rubber cloth. The unit uses LED UV light tubes, which can normally be used for about 10,000 hours.

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