Abstract: In a printer having an input tray, a media loader insert is provided, the media loader insert including an insert body which defines a reduced-size media receptacle, the insert body being sized to securely fit within the input tray; and a width adjuster adjacent the reduced-size media receptacle, the width adjuster being positioned centrally along a side edge of the reduced-size media receptacle to centrally engage a side edge of media within the reduced-size media receptacle, thereby reducing media skew.

Abstract: In a printer having an input tray, a media loader insert is provided, the media loader insert including an insert body which defines a reduced-size media receptacle, the insert body being sized to securely fit within the input tray; and a width adjuster adjacent the reduced-size media receptacle, the width adjuster being positioned centrally along a side edge of the reduced-size media receptacle to centrally engage a side edge of media within the reduced-size media receptacle, thereby reducing media skew.

Abstract: A printer is provided with a media loader insert for removable insertion into an input tray of the printer. The media loader insert includes an insert body which defines a reduced-size media receptacle configured to receive small-size media for insertion into the printer input port. The insert body has a width corresponding to the width of letter-size paper, and thus is sized to fit securely within a conventional input tray. A width adjuster is provided adjacent the reduced-size media receptacle, the width adjuster being positioned centrally along a side edge of the reduced-size media receptacle to centrally engage a side edge of media within the reduced-size media receptacle, thereby reducing media skew.

Abstract: A modular duplex media handling system used in conjunction with a simplex media handling print recording apparatus, includes a drive roller having a simple gear linkage. The simple gear linkage provides a fixed rotational relationship between the drive roller and a feed roller of the simplex handling apparatus. A media guide pivots about the drive roller's axle between a first position into which it is biased, and a second position into which it is deflected by a media sheet. From the first position, a media sheet retracting from a print zone can enter the duplex media handling system. From the second position, a media sheet can move from the input tray around the feed roller into the print zone, or move out of the duplex media handling system back into the input tray to await refeeding for second side printing.

Abstract: A reciprocating piston pump provides pulseless delivery of liquid. It is suitable for use in compact environments or for the delivery of small amounts of liquid, as in chromatographic analysis devices. The pump includes two pistons with pumping chambers that are alternately connected to inflow and outflow lines through a control valve. The control valve moves between a first position in which inflow is directed to the first piston chamber and outflow to the second piston chamber, and a second position in which outflow is directed to the first piston chamber and inflow is directed to the second piston chamber. Each outflow pulse from the piston is sustained longer than each inflow pulse, and the outflow pulses are staggered and partially superimposed to provide substantially pulseless delivery of liquid from the pump. A rotating cam moves the pistons of the pumps and the control valve between their operating positions described above.

Abstract: A reciprocating piston pump provides pulsation free delivery of liquid. It is suitable for use in compact environments or for the delivery of small amounts of liquid, as in chromatographic analysis devices. The pump includes two pistons with pumping chambers that are alternately connected to inflow and outflow lines through a control valve. The control valve moves between a first position in which inflow is directed to the first piston chamber and outflow to the second piston chamber, and a second position in which outflow is directed to the first piston chamber and inflow is directed to the second piston chamber. Each outflow pulse from the piston is sustained longer than each inflow pulse, and the outflow pulses are staggered and partially superimposed to provide substantially pulsation free delivery of liquid from the pump. A rotating cam moves the pistons of the pumps and the control valve between their operating positions described above.

Abstract: The use of flexures in the form of flat spiral springs cut from sheet metal materials provides support for coaxial nonrotating linear reciprocating members in power conversion machinery, such as Stirling cycle engines or heat pumps. They permit operation with little or no rubbing contact or other wear mechanisms. The relatively movable members include one member having a hollow interior structure within which the flexures are located. The flexures permit limited axial movement between the interconnected members, but prevent adverse rotational movement and radial displacement from their desired coaxial positions.

Abstract: A clamp for occluding a flexible tube comprising a permanent magnet rotary actuator coupled to a rotatable cam. A spring-biasing mechanism is provided to counteract the rotation of the rotary actuator and to return the rotatable cam to a pre-determined position when power is withheld from the rotary actuator.

Abstract: The seal bellows of a Stirling cycle device is connected between the bottom of a reciprocating piston and a cylinder wall to form a buffer space between the cycle working space and the lubricated crankcase. The piston and cylinder wall form a noncontact clearance seal between the buffer space and the working space in which an expander piston has a vented clearance seal to reduce the thermal loss due to cold gas leaking along the clearance seal.