Hope someone can help me. I am using Affinity Publisher, 1.9.3 on a macbook Pro 2017.
I am new to AFPub.
I’m finalizing a book of 144 pages, every page having at least one illustration (mostly photo’s). The book is a mix of b/w (48) and colour (96) pages.
The text is originally a Word document, copied and placed in the AFPub file.
The b/w pictures are colour pictures, converted in Lightroom Classic to b/w high contrast.
At my printing shop, a b/w page is cheaper than a color page, and I try to avoid paying the color rate for a b/w page. The price difference per book is not dramatic, but if you order 100-odd books, it is starting to hurt. And I am Dutch .
Also, there is the technical challenge of which AFPub settings would prevent b/w content to be treated as color. If any……
Whatever the settings, at the printer my 144 pages are seen as colour – including the 48 pages meant as b/w.
This same problem was discussed in a thread in 2018, but the discussion ended without a clear outcome, alas.
As I see it, my document settings, or my pdf settings are such, that the colour black of the text and the illustrations is not seen as true black. One should, therefor, try to convert text and b/w illustrations to (Y-M-C-0) K-100. By hand, I have adapted text and all b/w illustrations to these values. To lock colourspace or keep it unlocked does’nt seem to make a difference.
In order to test how things were processed at the printer I prepared a small document of six pages with text, and two pages with an b/w illustration added.
When applying the following settings at least the text-only pages were seen as b/w:
Document setup: CMYK/8
General CMYK profile
Colourspace locked to [C-M-Y-0]/K-100
Pdf preset pdf/x-3-2003 (printer recommends pdf/x-3-2002)
No colour conversion
No overprint.
I explored a bit more. In Photoshop, I converted 2 colour pictures into greyscale, and replaced the existing pictures with those greyscale pictures. The printer software reported back: four b/w, two colour.
I am completely at loss. Thanks in advance for any helpful suggestion or advice.
WillemW