Observation

Most of the candidates avoided this question. It marked that they were likely not exposed to the topic. Below is the needed answer to the question.

Letter Press Printing is a process that obtains impression on a relief surface. The type pages, after all necessary corrections, are imposed in a chase and locked up to become a forme. The forme is placed on the bed of the machine and securely locked up by the use of quoins.
The bed of the machine moves forward and backward to allow the forme rollers supply ink to the surface of the forme and contact with the impression cylinder that has taken up paper for impression, and the printed sheets are dropped in the delivery end of the machine.