Density vs. Dot percentage

[G_Town]

Just talking to a chicken the other day about this. Is there any correlation between density and dot percentage specifically is it possible to make a 1 to 1 comparison? I mean I know the more density the more color yada yada.

In other words, 5 density points would equal 3 dot percentage points? Is there anything "official" about this out there?

You get what I'm asking?

Me and the Chicken are just curious.

[DigitalCrapShoveler]

Interesting question, but I have never heard of any conversion method. In these situations I do what everyone else probably does... make a visual observation on press and translate that to the file for re-plating.

[G_Town]

Right right same here just wondering if anyone had ever done anything like that.

It's more of I wonder if more than it must be kinda thing.

[Joe]

Density of the printed sample or the plate? Either way, whatever the max density is would be 100%, minimum density would be 1%. Put the numbers from each in a spreadsheet and you'll see the correlation. I think youston could do this for you. He's a smart guy with numbers.

[G_Town]

Density of the printed sample or the plate? Either way, whatever the max density is would be 100%, minimum density would be 1%. Put the numbers from each in a spreadsheet and you'll see the correlation. I think youston could do this for you. He's a smart guy with numbers.

Printed sample for example cyan density (SID) at 120 vs 145 would there be a definable visual dot percentage amount?

[Joe]

In a perfect world it would but throwing dot gain into the mix and it's anybody's guess.

[G_Town]

Yea just wondering, if my dot gain was constant I wonder if I could figure something out. :undecided:

Youston get your big "The computer who wore Tennis shoes" brain over here.

[Chilbear]

Density and dot are two different readings. Density is the "thickness" of the ink and dot is the amount of light reflecting off the sheet I believe.

[G_Town]

Density and dot are two different readings. Density is the "thickness" of the ink and dot is the amount of light reflecting off the sheet I believe.

I understand that but the two are tied together, a density of 130 on a press sheet is going to make a 50% dot appear different than a density of 175.

You know making a file change vs playing with density to adjust color on press.

[David]

...the appearance difference is due to the ink thickness. The dot will be the same size, just a weaker tint.


maybe..

where's my drink?

[G_Town]

...the appearance difference is due to the ink thickness. The dot will be the same size, just a weaker tint.


maybe..

where's my drink?

Right but it will appear different, OH nvm I'm talking out of my a-hole again apparently.