Abstract: A document printer with a slot for inserting a document to a printing station of the printer, a switch for conditioning the printer for receiving a document and, upon release, for conditioning the printer for printing the document, a switch operating lever pivotal about each of two mutually perpendicular axes for being pivoted into and out of alignment with the switch and to operate the switch when in alignment therewith, and inner and outer document actuated feelers connected to successively pivot the switch operating lever to operate the switch and then out of alignment with the switch. The inner document actuated feeler is connected to the switch operating lever via an actuating line and is shiftable along the actuating line to shift the position of the document at the printing station.