How to acheive printing blacker blacks?

[David Hammond]

I don’t run a latex, but have you tried a rich black mix?

Try Adding 40-50% of CMY with a 100% black.

[Simon Worrall]

I will try that tomorrow. Thanks David .

[Craig Thompson]

We have Latex and we find blacks better with CMYK all at 100 using illustrator.

[Simon Worrall]

Thanks all.

The best black I can get is using 100, 100, 100, 100, and unchecking the colour correction tab on the rip.

I can also get the same result by using the “registration colour” in illustrator, which I believe does the same thing, printing 100% of all four colours.

On the Roland this used to put so much ink down it dripped down the print and ruined it.

[Hugh Potter]

We have a 50/50/50/100 for a deep black, whch we generally use when subbing banners / flags / display stuff.

Just make sure your heat is correct as it takes some drying. I can’t imaging what 100% across the board would be like, that’s a ton of ink. 99% of the time I just use 100% black and have no issues. The customer still sees black, it’s only us that really notice it.

If you have a black rgb image within the print, you’re almost certainly going to have to use a heavier black though, typically I use an eye dropper tool to copy the rgb colour as a cmyk.

Lots of little nuances with the HP, but great pritners in general

[David Hammond]

I’ve been getting a bit geeky over ink limits at the end of last year with our Roland.

The profile will have a total ink limit, so the maximum the media will handle without going dull (Our Roland can be as low as 180% some profiles were 230%) too little and the colours will look washed out.

Linearisation of each colour channel too, should limit the maximum ink for each colour, the point where the colour doesn’t get any denser with more ink. No point chucking 100% yellow, when 80% is almost identical (using a spectrometer)

100, 100, 100, 100, should be cut back to the maximum levels set in the profile.