That's near impossible to do well, but it's valuable because it shows you where two blacks have a different mix and would look different on the printed page.
#Autocad printing to pdf blacks look grey software
The washed-out greys you're seeing are the software trying to simulate the range of possible blacks on a screen. Rich black's colour balance typically looks like this (the Adobe default mix, from this related question): If doing this, always check proofs and work with the printer on this, they know their setup better than you can, never make assumptions. you probably don't have total ink problems, but you might create total ink problems if trying to fix rich black problems clumsily, I did once.). (beware total ink - if you don't know what that is, google it, because that's maybe the second biggest print design gotcha and you don't want to learn what it is after asking the question "Help why do the dark colours in my print keep smudging?". If you want a slightly cooler black, more cyan. Some designers will sometimes create their own rich black for a project.There are as many rich blacks as there are print configurations - see here for more info.
There's " Rich black", which is a mix of inks intended to create a more vibrant black. But it's great for text and fine lines, because there's no risk of indistinct edges if the print plates are very very slightly mis-aligned 100% K, 0% everything else, when printed in large areas, looks a bit dull and uninspired. There are a whole range of shades of printed CMYK colours that look black, but with a very slightly different edge or character to them because of slight differences in precisely what light the stacks of ink absorb: There's black ink (the 'K' in CMYK), but even with 100% black ink, it doesn't create a magic black hole that absorbs all light. It's just no light coming from the screen.ĬMYK black isn't simple. Make sure you have the Plot Object LIneweights box checked on your page layout dialog.Welcome to what is probably the Number 1 'gotcha' for people new to print design :-) and yes, people who encounter it for the first time not pre-warned almost always run into just before a deadline. If you need to have two black lines close to each other differentiated, use the Layer line weight property. You should avoid object property color overrides and stick to layer color control as much as possible. The objects that need to be in some other color will of course, be on other layers. Otherwise, these "black" lines will be invisible. You also need to remember, that someone doing follow up or modifying your drawing will have to be informed to use a white or lighter color modelspace background. Sometimes, depending on the complications of the objects in the drawings, when everything is selected at once, the property values are not available for change unless you look at the selections drop down list. for example polylines, or dimensions, etc. Done.īefore you change the color property, you may want to look at the drop down list of what was selected at the top of the properties dialog, and change your color property by object type, one type at a time. You will see that probably all the properties say "Varies". If so, once you have the layers set up, and all objects on the correct layer, simply select everything. You can also use the layer manager to control lineweight properties.ĭo you have objects with the color property set to something other than By Layer? 
In that case Changing the layer colors for the black objects to 0,0,0 is the best way for you. I assume you are not using the color dependent plot style method of controlling output line colors and weight.
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