Abstract: A method for limiting wireless connectivity roaming of a multi-function device (MFD) is disclosed. For example, the method is executed by a processor and includes failing to re-authenticate on a current access point of a wireless network, accessing a list of access points within a user defined boundary, selecting an access point in the list of access points based on a parameter of the access point, and establishing a wireless communication path with the access point.

Abstract: A printer includes a first printhead operatively connected to a source of ultraviolet (UV) curable ink having a first color, a first source of UV radiation following the first printhead in the process direction by a first predetermined distance, a second printhead operatively connected to the source of UV curable ink having the first color, and a second source of UV radiation following the second printhead in the process direction by a second predetermined distance that is greater than the firsts predetermined distance. The first predetermined distance enables the first source of UV radiation to fix the UV curable ink ejected by the first printhead before passing the second printhead and the second predetermined distance enables the ink ejected by the second printhead to flow over a portion of the substrate before the second source of UV radiation fixes the UV curable ink ejected by the second printhead.

Abstract: A printing system receives a print request containing patterns of marks to be printed on print media to produce printed output. A processor evaluates the print request to identify different printing densities of the patterns of marks. The processor alters the patterns of marks to create hidden features on the printed output by adding different printing densities of fluorescent spots to different areas of the patterns of marks. The different printing densities of the fluorescent spots are based on the different printing densities of the patterns of marks and on the size of the hidden features. A printing device prints the print request on the print media to produce the printed output.

Abstract: A dryer for use in an aqueous ink printer adequately dries coated substrates printed with aqueous ink images before discharge of the substrates. The dryer has a housing, a plurality of laser diodes, a current source, a variable electrical resistance network having a plurality of resistors, and a controller. The controller is configured to identify a plurality of ink coverage densities for a plurality of areas in an ink image that passes through the dryer, select and vary an electrical resistance of one or more of the resistors in the variable electrical resistance network using the identified ink coverage densities, and operate the plurality of resistors in the variable electrical resistance network to connect the laser diodes in the dryer selectively to the current source through the plurality of resistors using the identified ink coverage densities and a speed of the substrate through the dryer.

Abstract: An additive manufacturing system enables continual production of three-dimensional objects without operator intervention. The system is configured to form an object on a planar member, rotate the planar member 180° to enable gravity to move the object from the planar member to an object transport, which carries the object to a receptacle for storage and later processing. The opposite side of the planar member is then available for manufacture of another object and the planar member is again rotated following manufacture of the object so it can be removed and carried to the receptacle. The alternating formation of objects on opposite sides of the planar member continues until a predetermined number of objects has been made. The planar member can include one or more heaters to heat the surface on which an object is formed to facilitate release of the object once the planar member has been rotated.

Abstract: Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.

Abstract: A system for printing at least one stretchable ink on a thermoformable substrate including an unwinder arranged to feed the thermoformable substrate from a first roll into a web drive subsystem, a surface energy modification device arranged to alter a substrate surface energy to enhance wetting and adhesion of the at least one stretchable ink to the thermoformable substrate, at least one printhead array arranged to deposit the at least one stretchable ink on the thermoformable substrate, at least one radiation curing device arranged to cure the at least one stretchable ink on the thermoformable substrate, a sensor array arranged to monitor the at least one stretchable ink on the thermoformable substrate, and a rewinder arranged to receive the thermoformable substrate and to form the thermoformable substrate into a second roll.

Abstract: A three-dimensional (3-D) printer includes build and support material development stations positioned to transfer layers of build and support materials to an intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to a platen each time the platen contacts the intermediate transfer surface. A sensor detects the thickness of the layer on the platen, and a mechanical planer is positioned to contact and level the layer on the platen as the platen moves past the mechanical planer. Additionally, a feedback loop is electrically connected to the sensor and the mechanical planer. The mechanical planer adjusts the amount of the build material and the support material removed from the layer based on the thickness of the layer on the platen, as determined by the sensor.

Abstract: A computer-implemented method for writing to a printed memory device is disclosed. The computer-implemented method includes determining, by a microcontroller, a first encoding scheme from among a plurality of encoding schemes to write a first data portion from among a plurality of data portions, wherein the first encoding scheme comprises a first voltage and a first pulse width to be used to write the first data portion; providing, by the microcontroller, the first encoding scheme to an application-specific integrated circuit (ASIC); selecting, by the ASIC, a first target memory cell of the printed memory device corresponding to a first word line and a first bit line for the first data portion to be written; and writing, by the ASIC, the first data portion to the first target memory cell using the first encoding scheme.

Abstract: Printing devices include a printing engine and a media tray connected to a frame. The media tray is adapted to hold a stack of media supplied to the printing engine for printing. A magnetic trailing edge guide that is shaped to contact a corner of the stack of media is connected to a tether that is connected to the frame. A storage device is connected to the frame, and the storage device is shaped to accommodate the magnetic trailing edge guide. The length of the tether allows the magnetic trailing edge guide to reach the corner of the stack of media and to reach the storage device. The magnetic trailing edge guide includes a magnetic element adapted to magnetically hold to at least the media tray and the storage device.

Abstract: A modular radial impeller drum for cooling print media in a printing device are disclosed. For example, the modular radial impeller drum includes a plurality of impeller modules coupled together to form a surface to transport the print media. Each one of the plurality of impeller modules includes a cylindrical outer surface, a cylindrical center axis inside of the cylindrical outer surface, and a plurality of impeller blades coupled between the cylindrical outer surface and the cylindrical center axis, wherein each one of the plurality of impeller blades are angled, wherein the plurality of impeller modules are coupled together such that the plurality of impeller blades of each one of the plurality of impeller modules are aligned across a length of the modular radial impeller drum.

Abstract: An additive manufacturing system operates an actuator to move an extruder with reference to a selected first zig-zag pattern to sparsely fill an interior region of an object by extruding a swath of thermoplastic material that has straight portions connected by angled portions. After a first pass using the first zig-zag pattern is completed, a second zig-zag pattern is used to form a complementary swath that forms rigid structure with the first swath. Use of the two patterns is alternated to sparsely fill the interior region in multiple layers of the object until a predetermined distance from a solid fill structure or surface is detected. Transition patterns are then used to increase the density of the swaths in the interior region in the next successive layers of the object until the layer is reached where a solid fill surface is formed over the swaths formed using the transition patterns.

Abstract: A document processing system produces a digital representation of an original image by determining a background level for white space of the original image. Using the background level, the system identifies pixels not belonging to the white space. The system generates a binary image of the original image based from the identified pixels. The system then identifies image content surrounded by the white space in the original image using the binary image. Next, the system generates a block for each image content and extracts each block from the original image. After processing each block, the system reapplies the processed blocks to a blank canvas to generate the digital representation.

Abstract: A dampening fluid recycling system may include a print station having an imaging member with a reimageable surface, a dampening fluid deposition subsystem for applying a layer of dampening fluid onto the reimageable surface, and a dampening fluid recovery subsystem configured to remove excess dampening fluid vapor that does not condense over the reimageable surface. The dampening fluid deposition subsystem may include a dampening fluid supply chamber, a dampening fluid supply channel, and a dampening fluid supply channel outlet. The dampening fluid supply chamber may include an inlet tube and a tube body that may be a split tube. The dampening fluid supply channel may attach to the split tube and descend towards the imaging member to deliver fluid vapor from both parts of the first split tube onto the reimageable surface of the imaging member.

Abstract: A computer-implemented method for testing a printed memory device is provided. The computer-implemented method includes performing, by a controller, a first read operation on a cell of the printed memory device; performing, by the controller, a second read operation on the cell; converting, by the controller, a first result of the first read operation and a second results of the second read operation to a first digital value and a second digital value, respectively; comparing, by the controller, the first digital value and the second digital value to a first predetermined threshold and a second predetermined threshold, respectively, wherein the first predetermined threshold is a low threshold and the second predetermined threshold is a high threshold; and providing, by the controller, a result of the test for the printed memory device based on the comparing.

Abstract: A method of scheduling one or more virtual machines in a cloud computing infrastructure may include identifying, by a computing device, lag time data that has been collected over a period of time and that corresponds to one or more virtual machines in a cloud computing infrastructure, computing, by the computing device, a cumulative description of the identified lag time data, identifying a target performance level, determining, by the computing device, an estimated lag time that corresponds to the target performance level, and determining, by the computing device, whether to start a new virtual machine based, at least in part, on the estimated lag time.

Abstract: A method provides for language selection on a shared local user interface, such as an interface for operating a printer that is used by multiple users having a variety of first languages. The method includes providing at least one mechanism on a shared local user interface for selection of one of an original set of languages for text to be displayed on the local user interface. One mechanism may include displaying text in each of the languages contemporaneously or sequentially. At a plurality of times, a respective user's selection of one of the original set of languages is received. Based on a plurality of user selections, a modified set of languages can be learned which is then used in place of the original set of languages when providing the at least one language selection mechanism at a subsequent time.