Patent ID: 8668329

Claim:
A printing apparatus comprising: an apparatus housing configured to form a transport path for items to be printed proceeding in an x-direction of a Cartesian coordinate system in the apparatus housing, said apparatus housing comprising guide elements proceeding in a y-direction of the Cartesian coordinate system; a box-shaped module configured to engage and move on said guide elements toward and away from said apparatus housing along said y-direction, so as to be completely removed from said apparatus housing; said box-shaped module comprising a pressure device configured to urge said items in said transport path along a z-direction of said Cartesian coordinate system away from said box-shaped module, a portion of said pressure device projecting from said box-shaped module and thereby presenting an obstruction to said apparatus housing upon removal and insertion of said box-shaped module from and to said apparatus housing; said box-shaped module comprising two guide channels therein that respectively receive and engage said guide elements when said box-shaped module is reinserted toward said apparatus housing along said y-direction after being removed from said apparatus housing; in each of said guide channels, said box-shaped module comprising a rocker having a shape configured to interact with the respective guide element in the respective guide channel as said box-shaped element is moved toward said apparatus housing, to initially move said pressure device away from said apparatus housing during insertion of the box-shaped module by an amount that clears said portion from said apparatus housing so that said portion does not present said obstruction, and to subsequently move the pressure device away from said box-shaped module toward said transport path upon said box-shaped module reaching a predetermined position relative to said apparatus housing.