There can be problems obtaining predictable, reliably reproducible black and white images when using the four colour processes that HP Indigo printers do. The common, practical solution is applying an arbitrary tone value to grayscale b&w photographs so they print well. I don’t have a magic ingredient for that worked out. This book is my initial attempt to create reasonably printed b&w images by applying a range of Photographic Toning Gradient Map Layers to them.
The images used here are a small subset of the Avebury Stone Circle photographs from my 12” large square sized Blurb book: Soundings in the River of Time.