Many of the books show illustrations made from intaglio or relief printing.
From the stltoday.com
She also incorporates elements of relief printing to suggest texture.
From the tennessean.com
The basic concept of relief printing.
From the en.wikipedia.org
Relief printing is one of the traditional families of printmaking techniques, along with the intaglio and planographic families.
From the en.wikipedia.org
The traditional soft ground, requiring solvents for removal from the plate, is replaced with water-based relief printing ink.
From the en.wikipedia.org
It is a variety of woodcut and so a relief printing technique, where ink is applied to the face of the block and printed by using relatively low pressure.
From the en.wikipedia.org
They have created handmade books and are filling them with lines that express emotions using a variety of materials such as markers, watercolors, inks, relief printing.
From the tennessean.com
Lithographers sought to find a way to print on flat surfaces with the use of chemicals instead of relief or intaglio printing.
From the en.wikipedia.org
Traditional text printing with movable type is also a relief technique.