Abstract: An example binary ink developer (BID) assembly includes a housing, a developer roller, a squeegee roller, and a guard member. The developer roller receives ink and transfers a portion of the ink to a photoconductive member. The squeegee roller rotates and regulates a film thickness of ink on the developer roller. The squeegee roller includes a curved circumference. The guard member includes a conforming end disposed across from the squeegee roller. Further, the conforming end has a concave shape corresponding to a portion of the curved circumference of the squeegee roller.

Abstract: In one example, a processor readable medium has instructions thereon that, when executed by a processor, cause a system to detect a change in electrical conduction of a liquid moving at an interface between two surfaces and determine a conductivity of the liquid based on the detected change in conduction.

Abstract: A sealing device includes a base member configured to attach to an ink developer unit, a sealing member having a sealing surface configured to at least one of limit an unwanted flow of ink outside of the ink developer unit and conform to an outer surface of a respective roller, and a compliant member disposed between the base member and the sealing member such that the compliant member is configured to vary a sealing force along the sealing surface of the sealing member.

Abstract: In one example, a processor readable medium has instructions thereon that, when executed by a processor, cause a system to detect a change in electrical conduction of a liquid moving at an interface between two surfaces and determine a conductivity of the liquid based on the detected change in conduction.

Abstract: Liquid marking agent development assemblies, hard imaging devices, and liquid marking agent hard imaging methods are described. According to one aspect, a liquid marking agent development assembly includes a developer member having an outer surface, a marking agent delivery system to supply a liquid marking agent comprising a plurality of ink particles to a first location of the outer surface of the developer member, and a development system to adhere a plurality of the ink particles to the outer surface of the developer member, and wherein the development system is to adhere the adhered ink particles at a second location of the outer surface of the developer member which is upstream from the first location with respect to a direction of movement of the outer surface of the developer member.

Abstract: A sealing device usable with an ink developer unit including a plurality of rollers and a plurality of end cap members includes a first replaceable compliant sealing member and a latch member. The first replaceable compliant sealing member has a plurality of replaceable seal exterior surfaces to form a seal between a first set of rollers of the plurality of rollers and one of the end cap members. The latch member has a closed state to maintain a sealing force on the first replaceable compliant sealing member and an open state to remove the sealing force on the first replaceable complaint sealing member.

Abstract: Liquid marking agent development assemblies and liquid marking agent hard imaging methods are described. According to one aspect, a liquid marking agent development assembly includes a developer member comprising an outer surface and a charging assembly adjacent to the outer surface of the developer member, and wherein the charging assembly comprises at least one roller member configured to provide substantially an entirety of an electrical field relative to the developer member which electrical field is used to direct a plurality of ink particles of a liquid marking agent to the outer surface of the developer member and which ink particles upon the outer surface of the developer member are used to develop latent images upon an imaging member.

Abstract: An apparatus to receive a developer roller for a printing device. The apparatus comprises a base assembly including end caps at opposing ends. The base assembly includes a receptacle for a developer roller having rotary bearings. Each end cap includes first and second datum pins and a clamp containing a spring member. Each clamp, when locked in place in part by action of the spring member, is to push against a corresponding rotary bearing when the developer roller is installed in the base assembly. The rotary bearing being forced by the clamp into contact with the first and second datum pins to position the developer roller in the base assembly.

Abstract: Embodiments of the present invention generally provide a processing system for a display device integrated with a capacitive sensing device. The processing system includes a driver module having driver circuitry and coupled to a sub-pixel with a first source line and a first common electrode. The driver module is configured to simultaneously update the sub-pixel by driving the first source line with a first voltage, and drive the first common electrode for capacitive sensing by modulating the first common electrode between a second voltage and a third voltage. The processing system further includes a receiver module coupled to a plurality of receiver electrodes. The receiver module is configured to receive resulting signals from the receiver electrodes while the first common electrode is modulated between the second voltage and the third voltage. The processing system further includes a determination module configured to determine positional information based on the resulting signals.

Abstract: Embodiments of the invention generally provide an input device with display screens that periodically update (refresh) the screen by selectively driving electrodes corresponding to pixels in a display line. In addition to updating the display, the input device may perform capacitive sensing using the display screen as a touch area. To do this, the input device uses common electrodes for both updating the display and performing capacitive sensing, and interleaves periods of capacitive sensing between periods of updating the display lines (and pixels) based on a display frame. To avoid noise and mitigate interference during capacitive sensing, the input device may change the capacitive frame rate relative to the display frame rate based on measurements of interference. The changed capacitive frame rate may result in re-timed periods of capacitive sensing based on each display frame.

Abstract: A sealing device usable with an ink developer unit including a plurality of rollers and a plurality of end cap members includes a first replaceable compliant sealing member and a latch member. The first replaceable compliant sealing member has a plurality of replaceable seal exterior surfaces to form a seal between a first set of rollers of the plurality of rollers and one of the end cap members. The latch member has a closed state to maintain a sealing force on the first replaceable compliant sealing member and an open state to remove the sealing force on the first replaceable complaint sealing member.

Abstract: An apparatus for reducing ink droplets generated by bursting bubbles within an ink developer includes a surface directing an ink flow into a channel; and a protrusion within the channel that reduces ink droplets generated by bursting bubbles entrained within the ink flow. An ink developer includes an ink source supplying ink to the ink developer; an electrode which develops a portion of the ink onto a developer roller; and a splash guard which directs an undeveloped ink flow into a channel which has a reduced cross-section area configured to reduce bubbles exiting the channel and bursting.

Abstract: An apparatus to receive a developer roller for a printing device. The apparatus comprises a base assembly including end caps at opposing ends. The base assembly includes a receptacle for a developer roller having rotary bearings. Each end cap includes first and second datum pins and a clamp containing a spring member. Each clamp, when locked in place in part by action of the spring member, is to push against a corresponding rotary bearing when the developer roller is installed in the base assembly. The rotary bearing being forced by the clamp into contact with the first and second datum pins to position the developer roller in the base assembly.

Abstract: A sealing device includes a base member configured to attach to an ink developer unit, a sealing member having a sealing surface configured to at least one of limit an unwanted flow of ink outside of the ink developer unit and conform to an outer surface of a respective roller, and a compliant member disposed between the base member and the sealing member such that the compliant member is configured to vary a sealing force along the sealing surface of the sealing member.

Abstract: Liquid marking agent development assemblies and liquid marking agent hard imaging methods are described. According to one aspect, a liquid marking agent development assembly includes a developer member comprising an outer surface and a charging assembly adjacent to the outer surface of the developer member, and wherein the charging assembly comprises at least one roller member configured to provide substantially an entirety of an electrical field relative to the developer member which electrical field is used to direct a plurality of ink particles of a liquid marking agent to the outer surface of the developer member and which ink particles upon the outer surface of the developer member are used to develop latent images upon an imaging member.

Abstract: Liquid marking agent development assemblies, hard imaging devices, and liquid marking agent hard imaging methods are described. According to one aspect, a liquid marking agent development assembly includes a developer member comprising an outer surface, a marking agent delivery system configured to supply a liquid marking agent comprising a plurality of ink particles to a first location of the outer surface of the developer member, and a development system configured to adhere a plurality of the ink particles to the outer surface of the developer member, and wherein the development system is configured to adhere at least a majority of the adhered ink particles at a second location of the outer surface of the developer member which is upstream from the first location with respect to a direction of movement of the outer surface of the developer member.

Abstract: An apparatus for reducing ink droplets generated by bursting bubbles within an ink developer includes a surface directing an ink flow into a channel; and a protrusion within the channel that reduces ink droplets generated by bursting bubbles entrained within the ink flow. An ink developer includes an ink source supplying ink to the ink developer; an electrode which develops a portion of the ink onto a developer roller; and a splash guard which directs an undeveloped ink flow into a channel which has a reduced cross-section area configured to reduce bubbles exiting the channel and bursting.

Abstract: A splash guard is configured to control the flow of excess liquid generated by an interaction between a first roller and a second roller by splitting the flow of the excess liquid into a first flow and a second flow.

Abstract: A splash guard is configured to control the flow of excess liquid generated by an interaction between a first roller and a second roller by splitting the flow of the excess liquid into a first flow and a second flow.

Abstract: One embodiment of an imaging device includes an ink holder adapted for holding ink and an ink flow restriction device positioned within the ink holder, the ink flow restriction device including structure for defining a variable fluid resistance along a length of the ink flow restriction device.