Abstract: A cleaning device for cleaning a nozzle surface of an ink-jet head has a first wiping member for wiping a nozzle surface of an ink-jet head and a second wiping member for wiping the first wiping member, and a lever driving mechanism for moving the first wiping member between a retracted position located away from the nozzle surface and a wiping position for wiping the nozzle surface. The second wiping member is formed of an elastic body and is arranged within a moving path of the first wiping member, so that it contacts with the first wiping member for only a limited period, whereby reducing in wear of these wiping members.

Abstract: An improved structure and method are provided for signal processing. The structure includes dual-gated metal-oxide semiconducting field effect transistor (MOSFET). The dual-gated MOSFET can be fabricated according to current CMOS processing techniques. The body region of the dual-gated MOSFET is a fully depleted structure. The structure includes two gates which are positioned on opposite sides of the opposing sides of the body region. Further, the structure operates as one device where the threshold voltage of one gate depends on the bias of the other gate. Thus, the structure yields a small signal component in analog circuit applications which depends on the product of the signals applied to the gates, and not simply one which depends on the sum of the two signals.