Abstract: Example post-print processing of three dimensional (3D) printed objects are disclosed. An example system includes an energy source to apply energy to a selected portion of an outer surface of a 3D printed object. The energy provided by the energy source is to cause a polymer of the selected portion to melt and reflow. The selected portion and a non-selected portion of the outer surface to form a pattern on the outer surface of the 3D printed object. A controller to direct the energy of the energy source to the selected portion of the outer surface.

Abstract: An electrophotographic printer includes a charge roller in charge-transferring relation to a photoconductive imaging portion. The printer may determine an AC voltage setpoint of the charge roller.

Abstract: Example post-print processing of three dimensional (3D) printed objects are disclosed. An example system includes an energy source to apply energy to a selected portion of an outer surface of a 3D printed object. The energy provided by the energy source is to cause a polymer of the selected portion to melt and reflow. The selected portion and a non-selected portion of the outer surface to form a pattern on the outer surface of the 3D printed object. A controller to direct the energy of the energy source to the selected portion of the outer surface.

Abstract: An electrophotographic printer includes a charge roller in charge-transferring relation to a photoconductive imaging portion. The printer may determine an AC voltage setpoint of the charge roller.

Abstract: An apparatus and method measures and analyzes DC current passing through a substantially insulating member or dielectric material that is electrically connected to, or otherwise conductive, between an energized DC electrical transmission line and an Earth potential or ground. An apparatus may utilize a DC current measuring device, a DC voltage level selection switch, a DC display, a graphical display of momentary leakage current, and an audio speaker. A process may entail extending a substantially insulating member or dielectric material between an energized DC electrical transmission line and an Earth potential, detecting a DC momentary leakage current, using a DC momentary leakage current meter to measure DC current through the member or material, and a computer to analyze and compare the DC current, and deliver results or a warning that the DC current has reached a threshold value.

Abstract: An assembly for forming multiple nacelle components is disclosed. In accordance with various embodiments, the assembly includes a plurality of dies arranged about a central axis. A first one of the plurality of dies has a first wall and a first cavity extending through the first wall and a second one of the plurality of dies has a second wall and a second cavity extending through the second wall. The first wall and the second wall are configured to sandwich a pair of metal blanks there between. In various embodiments, a structural ring is configured to surround the plurality of dies.

Abstract: A system for determining DC leakage current flowing through an electrically insulating structure in a high voltage direct current power system is provided. The DC leakage current is a composite DC current. The insulating structure is operatively coupled to at least an overhead energized DC electrical line. The system further includes a direct current meter adapted to be electrically coupled to at least the insulating structure. The meter includes a waveform separator. The separator is configured to receive and separate the composite DC current into a corresponding direct current (DC) and an alternating current (AC) component. The separator further includes at least one comparator which is configured to produce at least one corresponding digital signal from the AC component; and a processor. The processor receives and analyzes the at least one corresponding digital signal and the DC component to determine a resultant leakage current flowing through the insulating structure.

Abstract: An assembly for forming multiple nacelle components is disclosed. In accordance with various embodiments, the assembly includes a plurality of dies arranged about a central axis. A first one of the plurality of dies has a first wall and a first cavity extending through the first wall and a second one of the plurality of dies has a second wall and a second cavity extending through the second wall. The first wall and the second wall are configured to sandwich a pair of metal blanks there between. In various embodiments, a structural ring is configured to surround the plurality of dies.

Abstract: An apparatus and method measures and analyzes DC current passing through a substantially insulating member or dielectric material that is electrically connected to, or otherwise conductive, between an energized DC electrical transmission line and an Earth potential or ground. An apparatus may utilize a DC current measuring device, a DC voltage level selection switch, a DC display, a graphical display of momentary leakage current, and an audio speaker. A process may entail extending a substantially insulating member or dielectric material between an energized DC electrical transmission line and an Earth potential, detecting a DC momentary leakage current, using a DC momentary leakage current meter to measure DC current through the member or material, and a computer to analyze and compare the DC current, and deliver results or a warning that the DC current has reached a threshold value.

Abstract: An apparatus and method measures and analyzes DC current passing through a substantially insulating member or dielectric material that is electrically connected to, or otherwise conductive, between an energized DC electrical transmission line and an Earth potential or ground. An apparatus may utilize a DC current measuring device, a DC voltage level selection switch, a DC display, a graphical display of momentary leakage current, and an audio speaker. A process may entail extending a substantially insulating member or dielectric material between an energized DC electrical transmission line and an Earth potential, detecting a DC momentary leakage current, using a DC momentary leakage current meter to measure DC current through the member or material, and a computer to analyze and compare the DC current, and deliver results or a warning that the DC current has reached a threshold value.

Abstract: A charge roller includes a body having a metal external surface and an inorganic outer resistive coating.

Abstract: A system for determining DC leakage current flowing through an electrically insulating structure in a high voltage direct current power system is provided. The DC leakage current is a composite DC current. The insulating structure is operatively coupled to at least an overhead energized DC electrical line. The system further includes a direct current meter adapted to be electrically coupled to at least the insulating structure. The meter includes a waveform separator. The separator is configured to receive and separate the composite DC current into a corresponding direct current (DC) and an alternating current (AC) component. The separator further includes at least one comparator which is configured to produce at least one corresponding digital signal from the AC component; and a processor. The processor receives and analyzes the at least one corresponding digital signal and the DC component to determine a resultant leakage current flowing through the insulating structure.

Abstract: A charge roller includes a body having a metal external surface and an inorganic outer resistive coating.

Abstract: An apparatus and method measures and analyzes DC current passing through a substantially insulating member or dielectric material that is electrically connected to, or otherwise conductive, between an energized DC electrical transmission line and an Earth potential or ground. An apparatus may utilize a DC current measuring device, a DC voltage level selection switch, a DC display, a graphical display of momentary leakage current, and an audio speaker. A process may entail extending a substantially insulating member or dielectric material between an energized DC electrical transmission line and an Earth potential, detecting a DC momentary leakage current, using a DC momentary leakage current meter to measure DC current through the member or material, and a computer to analyze and compare the DC current, and deliver results or a warning that the DC current has reached a threshold value.

Abstract: A charge roller includes a body having a metal external surface and an inorganic outer resistive coating.

Abstract: A charge roller includes a body having a metal external surface and an inorganic outer resistive coating.

Abstract: An organic photoconductor includes a conductive substrate; a charge generation layer over the conductive substrate; a charge transport layer over the charge generation layer; and an overcoat layer over the charge transport layer. The overcoat layer comprises a cross-linked polyacrylate that includes a charge transport material dispersed therein and a polyhedral oligomeric silsesquioxane.

Abstract: An organic photoconductor includes a conductive substrate; a charge generation layer over the conductive substrate; a charge transport layer over the charge generation layer; and an overcoat layer over the charge transport layer. The overcoat layer comprises a cross-linked polyacrylate that includes a charge transport material dispersed therein and a polyhedral oligomeric silsesquioxane.

Abstract: Organic photoconductors and methods of manufacturing the same are disclosed. An example method to manufacture an organic photoconductor involves applying a liquid solution to a surface of a cylindrically-shaped substrate while rotating the substrate about its axis, the substrate comprising a surface layer and the liquid solution comprising a matrix polymer species and a dopant species dissolved in a solvent. The example method further involves rotating the substrate while the solvent evaporates to provide a substantially evenly distributed seamless residue film comprising the matrix polymer species and the dopant species, and cross-linking the matrix polymer species of the residue film.