laser direct imaging (LDI) system solutions LDI Roll to Roll PCB
PCB laser direct imaging (LDI)
When fabricating a circuit board, the circuit traces are defined by
what is the imaging process. Laser direct imaging ( LDI ) exposes
the traces directly with a highly focused laser beam that in NC
controlled, instead of flooded light passing through a photo tool,
a laser beam will digitally create the image.
How does laser direct imaging ( LDI ) work?
Laser direct imaging needs a PCB with the photo-sensitive surface
that is positioned under a computer controlled laser. And then the
computer is creating the image on the board with the light of
laser. A computer scans the board surface into a raster image,
matching the raster image to a pre-loaded CAD or CAM design file
that includes the specifications for the necessary image intended
for the board, the laser is used for directly creating the image on
the board.
| Specification/model | RTR315 |
| Application | PCB,HDI,FPC (inner layer,outer layer,anti-welding) |
| Resolution (mass production) | 15um |
| Capacity | 12S@18"*24" |
| Exposure Size | 260*800mm |
| Panel thickness | 0.05mm-3.5mm |
| Alignment Mode | UV-Mark |
| Alignment capability | Outer layer±12um；Inner laye±24um |
| Line width tolerance | ±10% |
| Deviation increase and decrease mode | Fixed increase and contraction, automatic increase and contraction,
interval increase and contraction, partition alignment |
| Laser type | LD Laser,405±5nm |
| File format | Gerber 274X；ODB++ |
| Power | 380V three-phase alternating current, 6.4kW,50HZ, voltage
fluctuation range + 7% ~-10% |
| Condition | Yellow light room; Temperature 22°C ± 1°C; Humidity 50% ± 5%;
Cleanliness level 10000 and above;
Vibration requirements to avoid violent vibration near the
equipment |
Advantages of LDI over Photo Processing
Traditional photo processes requires multiple steps to create the
phototool used to generate the image on the PCB. This has generated
a number or challenges for PCB fabricators over the years. LDI
provides a number of advantages:
· Quality – photo film issues in the past have resulted in
imperfect images due to inherent susceptibility to fluctuations in
temperature or humidity. Laser images result in much more precise
and consistent images, and eliminate any film-related defects.
· Laser imaging provides precise positioning and improved
resolution. Image lines, spaces, and alignment are more accurate.
· Photo methodology requires temperature and humidity controlled
environments to provide the most accurate transfer of images to
boards. LDI reduces the impact of environment on the resulting
images, and removes the impact of light refraction inherent with
photo processing techniques.
LDI fabrication offers specific advantages where short runs or
quick turn-around are required, making creation of artwork and
setup of phototool methods impractical. LDI is also an important
factor when close tolerances and tight registration are involved.
Today’s customer demands for smaller, lighter, high-density PCBs
are quickly edging out photo technology as a practical tool in
generating PCB images.
About us
We are an innovative supplier of various PCB laser direct imaging
(LDI) system solutions. Our system product portfolio ranges from
LDI system configurations for high-mix and emerging PCB niche
applications to fully automated LDI system solutions for mass
production environments.
