Step 1: Identify the technique. 'Collage Plate' printing is another term for Collagraphy (or Collography), where the printing plate is created by collaging various materials onto a rigid substrate.
Step 2: Recall the history of modern Indian printmaking. The artist Kanwal Krishan (1922-1993) was a key innovator in Indian printmaking. After studying in Europe, he is credited with introducing several new techniques to India, most notably the collagraph process, which he explored extensively in his work.