There is an optional UV function on CM-2D202 and CM-2D203. It's allowed to read the UV barcode.
UV Barcode Reading
Optional Function
![UV.png](https://static.wixstatic.com/media/91a59a_93d86e1193a34c54b8632aa868c2ff8c~mv2.png/v1/fill/w_600,h_450,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/UV.png)
The reading performance is good if the UV ink is with clear UV effect ( see above brightness barcode ). And it will be poor if the UV ink is very light )
And the readable resolution is about 4mil. But if the barcode is DM ( Data Matrix , it's a kind of " dot barcode " ) and some of its dots are gathered by one big dots, the reading result may be failure.
The UV barcode be an invisible barcode is a good solution for some security which is not easy to be
copy or seen by normal way. But the technology for how to print a good UV barcode is a know-how. Then how to have the barcode scanner to read such UV barcode is also a know-how.
![image 3.jpg](https://static.wixstatic.com/media/91a59a_ed6ceb1c89494a25859cc8f5f8535f22~mv2.jpg/v1/fill/w_599,h_412,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/image%203.jpg)
![1226_1.jpg](https://static.wixstatic.com/media/91a59a_66481c83b383435c9602e4dc7054597e~mv2.jpg/v1/fill/w_303,h_227,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/1226_1.jpg)
![1226-5.jpg](https://static.wixstatic.com/media/91a59a_afafa3fbb0ff4beaae63910d8e09aa44~mv2.jpg/v1/fill/w_309,h_232,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/1226-5.jpg)
Above is good printing quality UV barcode , Data Matrix & QR code. It will have the CM-2D202 / CM-2D203 to read easily.
![DM0000 (1).jpg](https://static.wixstatic.com/media/91a59a_2fc4f4b2e11348c6a199f8e7a5e42e15~mv2.jpg/v1/fill/w_652,h_489,al_c,lg_1,q_80,enc_auto/DM0000%20(1).jpg)
Above is poor printing UV barcode , Data Matrix . This barcode almost can not be seen when the UV light of barcode scanner is ON. So it's difficult to read or can not read it. Therefore, please be careful for the
UV barcode printing quality.
![good UV barcode.jpg](https://static.wixstatic.com/media/91a59a_decad1f15b6e45e0b5d9f171e5dd950d~mv2.jpg/v1/fill/w_600,h_496,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/good%20UV%20barcode.jpg)
Above is 2 good printing quality UV barcode which are easy to read .
Specification
![CM-890 spec. .jpg](https://static.wixstatic.com/media/91a59a_f5d109d8ad244108960a4402e0db1ae0~mv2.jpg/v1/fill/w_827,h_718,al_c,q_85,enc_auto/CM-890%20spec_%20.jpg)
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