Hi Rey. As a matter of fact, the proper term is compensation instead of correction. To know how much to compensate, you need to know how much does the dot grows once is printed. For example, if the printed dot gains 20%, you will need to reduce that amount to the "digital dot" on files, so you will digitally end up with a 80% dot in size that printed will grow the remaining 20% and will. Tried to explain it as simple as I could. Every commercial printing system such as offset, flexo and gravure have dot gains, although it varies from machine capability, substrate, speed, ink formulation, drying method, etc. Printers do need to know their own Dot Gain, as well other critical data such as TAC, Tonal Range, Min positive and negative line, etc. It is recommended to have printer run what is called Fingerprint which gives verdy nerdy data on how their own printing devices is behaving and what is the real deal with dot gain and other of the above specs. Cheers.
05:03 Gentlemen, you are confusing concepts and misleading people. The size of the codes and their level of readability on the VERIFIER (not the barcode reader) depend on many factors. The 62.5% factor you provide is a recommendation from the GS1 organization that deals with barcode standardization. And these 62.5% refer specifically to ITF14 codes, and not the UPC code as shown by you
Really helpful.
Thanks!
how is dot gain corrected ? is it in photoshop or illustrator? is dot gain dictated by the printers?
Hi Rey. As a matter of fact, the proper term is compensation instead of correction. To know how much to compensate, you need to know how much does the dot grows once is printed. For example, if the printed dot gains 20%, you will need to reduce that amount to the "digital dot" on files, so you will digitally end up with a 80% dot in size that printed will grow the remaining 20% and will. Tried to explain it as simple as I could. Every commercial printing system such as offset, flexo and gravure have dot gains, although it varies from machine capability, substrate, speed, ink formulation, drying method, etc.
Printers do need to know their own Dot Gain, as well other critical data such as TAC, Tonal Range, Min positive and negative line, etc.
It is recommended to have printer run what is called Fingerprint which gives verdy nerdy data on how their own printing devices is behaving and what is the real deal with dot gain and other of the above specs.
Cheers.
Well done!
sir,i want full course of prepress designing
Check this out: packagingschool.com/package-printing/
Could be helpful!
Thanks for reaching out!
Prepress is a vanishing occupation. Was a prepress tech for 40 years. Pay has decreased considerably, jobs are scarce. Go into a different trade.
Are there any courses with certificate ?
Hello! Yes, we have a wide selection of courses that provide you with a certificate upon completion packagingschool.com/all_courses/
05:03 Gentlemen, you are confusing concepts and misleading people. The size of the codes and their level of readability on the VERIFIER (not the barcode reader) depend on many factors. The 62.5% factor you provide is a recommendation from the GS1 organization that deals with barcode standardization. And these 62.5% refer specifically to ITF14 codes, and not the UPC code as shown by you