Used Led Exposure Machine

Used Led Exposure Machine

Purpose of UVLED exposure machine:

UVLED exposure machine is mainly used in PCB circuit board manufacturing, semiconductor production and high-precision fine circuit exposure.

Working principle and characteristics:

1. Power saving, energy saving and cost reduction - the energy consumed when the LED reaches a certain brightness is only about 15 watts, while the traditional lamp consumes 1500 watts of energy to reach the same brightness. Even compared with UV halogen lamp, it can save 80% of energy. Therefore, LED lamp is very energy-saving and environment-friendly.

2. The lamp source system is guaranteed for 3 years and has a long service life - the service life of LED lamp is more than 20000 hours.

3, a wider range of applications - LED lights are not infrared heating, the heat is lower, so it will not affect the heat and deformation of the media (such as foam plastic panels, foil, PVC, etc.) in the printing process. In this way, the application range of media is more extensive.

4. Fast response (SWITCHING) time - the LED lamp does not need to be preheated. It can be printed immediately after starting up, and the productivity can be improved.

5. High safety - LED lamps have no UVC rays, no ozone release, and are not easy to be damaged.

6. High stability - the printing quality of UV inkjet printer has a great relationship with the UV drying and curing process. The stability of LED lamp makes the output energy predictable and stable, so the printing effect is also predictable and stable.

7. Led deep curing of ink - the light wavelength emitted by LED lamp is 395nm, which can deep cure the ink, so it will not happen that the printing surface is dry but the bottom layer is not dry. Printing on various media has strong adhesion and scratch resistance.

8. Facing the high labor cost, the manual model will be upgraded to automatic equipment, and the LED light source exposure machine is widely used.

Exposure machine is an essential equipment for modern PCB manufacturing. In the PCB manufacturing process, one of the key processes is to transfer the negative image to the copper foil substrate. First, a layer of photosensitive material (such as liquid photosensitive adhesive, photosensitive resist dry film, etc.) is coated on the substrate, and then the photosensitive material coated on the substrate is irradiated to change its solubility. The resin of the non photosensitive part is not polymerized and dissolved under the action of the developer, and the resin of the photosensitive part remains on the substrate to form an image. This process is exposure, That is, the process completed by the exposure machine in the production of printed circuit board.