Reduce bounce rates

Question

Hello,

I have an InDesign document for which I need to reduce the ink levels. I saw that this can be found in "my color preferences," but I can't seem to find them and I have no idea how to solve this problem.
Does anyone know more about it?

Thank you

Configuration: Windows XP Firefox 3.0

pytheas · Accepted Answer

Hello,

The ink density refers to photos and can be adjusted in Photoshop.

Open the image and convert it to RGB (Image > Mode > RGB Colors)

Then go to Edit > Colors > (in the first box Workspace) CMYK > Custom CMYK (at the top) > Total Ink Limit > 280

Switch back to CMYK. Update your photos in InDesign.

You can check the ink density of your photos using the Info panel (in the box at the top left there is a pipette, click on it and activate Total Ink.

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mickael19100 · Answer

Hello,
go to Control Panel - Printers - select it and then right-click - Properties - Printing Options and there you choose either Normal or Draft. Based on the result, you will choose the most suitable one.
Best regards.

Madidounette · Answer

Thank you for your response, but either I did not understand your answer or I did not express myself well.
I need to send this document to a magazine and they are asking me to reduce the ink levels and I can't do it. I don't understand how to do it...

mickael19100 · Answer

re,  I think you simply mean the file size, not the print quality @+

mofoelfelps · Answer

Ok, that works!!! But won't reducing the ink limit for the images make them look too dull?

Teknigraf · Answer

Hello,

It is in no way necessary to exceed an ink coverage rate; it's a bit like pouring 2 liters of water into a container that can only hold 1. Where will the rest go?....

The same goes for ink on press... The paper tolerance and the ink drying time are the main factors that determine the ink coverage rate. Have you ever seen a newspaper where there is a nice black or very dense advertisement on one side.... if you look closely... on the other side (page mirror) you will find ink from that nice advertisement.. why? there's too much ink or it wasn't dry before the newspaper closed!

To answer the question about the too flat appearance, it's possible that yes, the photo may become a bit neutral, without contrasts if you adjust the parameters yourself with the curves. But there are much more effective remedies for that.

A little theory!!
In printing, there are 4 colors: Cyan, Magenta, Yellow, and Black, and according to the theory and practice of color, we would not really need black, because with C M Y, we can create black....

In the same vein... if we have the values C=100 M=100 Y=100, we will have black.... but the ink coverage at 300% !!!!!

Also note that inks are semi-transparent... so a black at 100% is not completely opaque. Therefore, to intensify this color, we enrich it with the other three... C=20 M=20 Y=20 K=100 we just increased the density of the black and our ink coverage is only 160%. This method can be automated in Photoshop through color profiles, via the methods of undercolor removal GCR and UCR.

In Edit > Color Settings
editing > color...

You will find in the workspace area the colorimetric profiles to better understand what I'm explaining above; click on the CMYK dropdown menu, and at the very top, you will find Custom CMYK.
You will be able to understand and visually adjust what will happen with your colors when switching from RGB mode to CMYK mode.

Note that if your images are already adjusted to CMYK... the profile does not readjust the color separation (undercolor removal), so switch back to RGB mode (Adobe RGB) preferably (larger color spectrum = less restrictive) and then switch back to CMYK mode. Your image will adhere to the ink coverage limits given in the profile.

The ideal is to use a profile provided or suggested by the printer, but this is not always possible.
If you have created colors directly in InDesign or Illustrator, these are known as mechanical colors. These colors have values over which you have total control, so it is easy to measure the ink densities in your document.

If, however, you are using colors from a palette like ©Pantone, I strongly recommend switching to CMYK mode as you will have control over the ink mixtures. Otherwise, it is the printer who decides :( and that is not always conclusive.

I hope I have been clear as this is an aspect of printing that is sometimes difficult to grasp, and especially to apply.

Hoping to have answered as many questions as possible
sincerely

Teknigraf

P.S. To check the ink coverage rates, the method I use is through Acrobat PRO, look for "Output Preview" or "Preview Output". (sorry for not being more precise, each version is different, and its location has changed since version 5) In version 9, you will find it under "Advanced Options > Print" at the bottom of the window, you will find a checkbox with a green color next to it.... called "total ink coverage" or something similar in French :) once checked.. you will see highlighted in fluorescent green the ink coverage that exceeds the limit you indicated right next to it.

beju · Answer

Thank you to Pytheas and Teknigraf for their responses. I was really struggling trying to correct the colors in Photoshop with selective color adjustments, resulting in not great output, and thanks to you, I have a perfect, quick solution that gives excellent results!!!

lodin · Answer

You need to reduce the density of your blacks by making a selective adjustment to them.

Maxicaca · Answer

Excellent teknigraf  You manage, thank you.

Lupus · Answer

I recommend a pretty awesome app to learn all the details of good file design ^^  http://www.totem-co.com/graphitool-application-iphone.html

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