A block is a piece of wood, linoleum or styrofoam used as a matrix for a print. Ink, a mixture of pigment suspended in a water-soluable base with gum arabic, is used for block and Collagraph printing.
The ink is applied to the block with a brayer, the block is flipped and positioned on the paper and then a baren or spoon or even just your thumb is used to press the paper into the block to transfer the ink.
The number of images printed from the block is called an edition. These identical images are pulled by the artist (in my case) and then numbered in pencil directly on the print (for example, 1/10 through 10/10)
In many of my prints I make a block print (take a look at my duck) and then a monoprint over it. By adding the monoprint over the block print I’ve make each one unique. These are numbered with “V.E.”, meaning various editions.
I learned this technique in a program with Linda Kirstin Blix. You can find her at her website.