Do You Know? - 200 DPI or 300 DPI?

In a printer specification, you can always see that it states it is a 200DPI printer or 300DPI printer. What does DPI mean? It stands for Dots per inch. So a 200DPI printer would simply means that it will be able to print 200 dots in 1 inch.

Using simple mathematics, we will be able to find out the size of 1 dot. 1 divide by 200, we will get 0.005". Thus the size of 1 dot is 0.005".

Now, how is this related to mil? (Mil is just a unit used for the measurement of barcode. To be more exact, it is actually the size of the thinnest bar in a barcode. This only stands true for 1D barcodes.) Back to the question, what is the relationship between the mil and the size of 1 dots of a printer? 0.005" can be converted to mil. Just by moving the decimal point back by 3 places. That meant 0.005" is equal to 5mil.

For a quick check, what is the smallest mil size of barcode can a 300dpi printer print?
Here is the answer, 1 divided by 300 will give you 0.00333. Converting it to mil will be 3.33 mil. So the smallest mil size of barcode it can print is 3mil.

Another test for you, what is the smallest mil size of barcode can a 600dpi printer print?
The answer is 1.67mil.

How does this helps you?
It will placed you in a better position to get a right barcode printer suitable for you. Users who are not in this industries knows little about barcode/mil size. however, if you are able to tell which model of printer is used to print the barcode. You will be able to deduce the size of the smallest barcode it can print. From there, using your experience, you will be able to make a very good guess of the mil size of the barcode and what barcode scanner can be used.

From time to time, user will asked why must I buy a barcode printer and not a HP laserjet to print? Why does a barcode printer cost more than a HP printer, where is the justification?
Customer will have more control over on what is to be printed using a barcode printer. Customer can fully customized the labels to their requirement. It is also not possible to print a scratch resistant label using on a HP printers.

Customer can also control the mil size of the barcode. By controlling the size of the barcode, he can be assured that the scanners out there in the market can scan his barcode. Customer will not know what is the mil size of the barcode printed out using a HP printer.


Copyright © 2007 Autopack | Feedback
Best viewed with IE 5.0 and above with 1024 x 768 screen resolution.