DPI = Dots Per Inch
True DPI is defined as how many dots can be lined up in an inch without overlapping.
There are 4X as many dots in a square inch at 600 DPI than at 300 DPI.
RMI Lasers Utilize YVO4 Technology Resulting in the Highest Resolution Marking.
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CO2 Lasers Overlap Dots to achive 300DPI
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CO2 Lasers Overlap Dots to achive 600DPI |
RMI TRUE 635 DPI
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Or to put it another way, Photos can ONLY be Engraved at True DPI.
note: RMI can also overlap dots for Vector Art (text) which results in extremely clean lines.
All Laser Marking Systems produce dots. AKA Laser Spot size. These dot's are based on a combination of the wavelength of the Laser technology and the Focus of the Beam.
| Laser |
Wavelength |
Best Spot Size* |
Typical Spot Size** |
True DPI |
YVO4 (U-10)
|
1064nm |
30µm (.001") |
40µm ( .0015") |
847 / 635 DPI |
YVO4 (U-5G)
|
532nm
|
20µm (.0008") |
30µm ( .001") |
1,270 / 847 DPI |
| CO2 |
10600nm |
76µm (.003") |
178µm(.007") |
334 / 142 DPI |
YAG Diode Pumped
|
1064nm |
50µm (.002") |
100µm (.004")
|
500 / 254 DPI
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YAG Flash Lamp
|
1064nm |
50µm (.002") |
100µm (.004")
|
500 / 254 DPI |
| Fiber |
1030-1050nm |
30µm (.001") |
40µm ( .0015") |
847 / 635 DPI |
While Fiber and YVO4 seem similar in resolution, Fiber is much slower which generates considerably more heat. Click here to learn more about how Fiber and YVO4 compare.
*Best Result Possible
** Normal Operation on Most Materials
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