Abstract: On a display screen, the visual size of a graphical user interface (GUI) widget is scaled based on the distance between the GUI widget and a displayed selection pointer, such as an arrow pointer controlled by a mouse. As the selection pointer is moved toward or away from the widget, the widget changes size. This permits the widget to display additional information, such as icon text, as a user moves a selection pointer closer to the widget.

Abstract: A pre-selection indicator for a graphical user interface (GUI) widget is displayed when a selection pointer is moved within a field of influence associated with the GUI widget on a display screen. The field of influence for the widget extends beyond the visual display area of the widget. To determine the field of influence, an analog to a gravitational force field is generated mathematically to operate between the displayed selection pointer and the widget. The pre-selection indicator can be a visual aura associated with the displayed widget, or the displayed widget can be visually enlarged to the boundary of the field of influence surrounding the widget.

Abstract: Methods for reducing cavitation in impulse or drop on demand ink jetting devices are provided. Impulse ink jet compositions comprising antioxidant are also provided which are suitable for printing clear, well-defined alphanumeric text or low spread, narrow bar width bar codes on porous substrates such as Kraft paper or corrugated cardboard. The ink compositions preferably comprise from about 20 to 50 percent by weight of a carbon black dispersion, from about 10 to 20 percent by weight of a dispersion medium, from about 40 to 60 percent by weight of a plasticizer and less than 2% of an antioxidant additive. The antioxidant additive lowers the dissolve oxygen level in the ink, thereby enhancing the jetting perfomance of the printhead.

Abstract: An ink formulation particularly suitable for inkjet printing comprising a pigment, polypropylene glycol and water. In a preferred embodiment, the ink composition comprises 0.5 to 15% by weight of a pigment, 0.5 to 30% by weight of polypropylene glycol, and 55 to 99% by weight of water, wherein the percentages are based on the overall weight of the formulation. In another preferred embodiment, the ink composition comprises a pigment, polypropylene glycol, and water, wherein the minimum ratio of pigment to polypropylene glycol is about 1:1 to about 1:2.5. The ink composition of the present invention produces a surprisingly wet fast and light fast printed image.

Abstract: Methods and apparatus are provided for preventing clogging in impulse ink jet printers. It has been found in accordance with the invention that ink clogging during quiescent periods can be prevented by providing an ink that has the property of forming a barrier of higher viscosity ink where the ink contacts the ambient air. As a result, the viscous barrier shields the remaining ink from the effects of air exposure during the quiescent period. Thereafter, the barrier is removed by a series of sub-pulses that re-homogenize the viscosity barrier and clear the nozzle.

Abstract: Methods and apparatus are provided for preventing clogging in impulse inkjet printers. It has been found in accordance with the invention that ink clogging during quiescent periods can be prevented by providing an ink that has the property of forming a barrier of higher viscosity ink where the ink contacts the ambient air. As a result, the viscous barrier shields the remaining ink from the effects of air exposure during the quiescent period. Thereafter, the barrier is removed by a series of sub-pulses that re-homogenize the viscosity barrier and clear the nozzle.

Abstract: An output driver including pull-up and pull-down output transistors is formed in a silicon substrate. The source and the drain of the pull-up output transistor are formed in a common bulk region of the substrate. A bulk potential control circuit for controlling the voltage of the bulk region, a resistive element and a gate drive control circuit are also formed in the silicon substrate. A layer of interconnect formed over a top surface of the silicon substrate may selectively couple into the output driver circuit one or more of the resistive element between a source of the pull-down output transistor and a reference voltage source, the bulk potential control circuit to control the voltage of the bulk region of the silicon substrate, and the gate drive control circuit to control the rate of change of voltage on the gate of the pull-down transistor as a function of the voltage on this gate.

Abstract: An output driver circuit capable of driving its data output terminal to a digital logic level high, capable of driving its data output terminal to a digital logic level low, and capable of tristating its data output terminal has an output stage comprising a pullup field effect transistor (FET) and a like-polarity pulldown FET. The two pullup and pulldown FETs are coupled in series between two voltage supply lines. In one aspect of the invention, the output driver comprises a charge rate control circuit which charges the gate of the pulldown FET when the pulldown FET is to be turned on so that the voltage on the gate increases at a first rapid rate and then increases at a second slower rate after the pulldown FET begins to conduct current. In another aspect of the invention, a resistive element is provided between the source of the pulldown FET and a ground voltage supply line.

Abstract: An output driver circuit capable of driving its data output terminal to a digital logic level high, capable of driving its data output terminal to a digital logic level low, and capable of tristating its data output terminal has an output stage comprising a pullup field effect transistor (FET) and a like-polarity pulldown FET. The two pullup and pulldown FETs are coupled in series between two voltage supply lines. In one aspect of the invention, the output driver comprises a charge rate control circuit which charges the gate of the pulldown FET when the pulldown FET is to be turned on so that the voltage on the gate increases at a first rapid rate and then increases at a second slower rate after the pulldown FET begins to conduct current. In another aspect of the invention, a resistive element is provided between the source of the pulldown FET and a ground voltage supply line.

Abstract: This invention relates to the amelioration of cryptosporidiosis symptoms, such as diarrhea, caused by the parasite crypotosporidium in susceptible host animals using effective amounts of decoquinate.

Abstract: A sway control apparatus for a trailer comprising an electromagnetically actuated brake drum mounted horizontally on the draw bar frame of the trailer. Means are provided on the rotatable drum of the brake to which are connected ends of chain links. The other ends of the chains extend forward and connect to opposite ends of a cross bar member fixed to the hitch means directly below the hitch ball. The cross bar member and the two spaced chains connected to the brake drum form a parallelogram which is normally free to shift positions during normal driving. When swaying occurs, the sway control brake is manually actuated to fix the parallelogram in position thereby preventing or dampening the return sway. A pressure sensing device is fitted at the side of the trailer adjacent the rear thereof. The pressure sensing device will actuate a switch when air pressure is exerted on the side of the trailer sufficient to cause swaying of the trailer.