A lens frame holding a taking lens is movably connected to a driving shaft via a connector. The actuator element forms a component of a thermal actuator which, in a particular embodiment of the invention, is actuated to drive a paddle within a printhead ejector and so displace ink from the ejector. A hydraulic circuit is provided with an electromagnetic switch valve 42, which switches the quick drop valve 36 from a non-quick drop position 37 to a quick drop position 38. A filter frame is provided with removal assist construction for service personnel. A dynamic icon creating module dynamically creates an icon that represents the layout created by the user.