Abstract: Systems and methods for fault detection, exclusion, isolation, and re-configuration of navigation sensors using an abstraction layer are provided. In certain embodiments, a system includes a plurality of sensors that provide redundant sensor measurements, wherein redundancy of the redundant sensor measurements is achieved based on an independence between measurements from different physical sensor units in the plurality of sensors. The system additionally includes a fusion function configured to receive the redundant sensor measurements from each sensor in the plurality of sensors and calculate fused navigation parameters. Further, the system includes an abstraction layer that calculates an estimated state based on the fused navigation parameters, wherein the estimated state comprises safety assessment information for the fused navigation parameters and the fused navigation parameters.

Abstract: An example system may comprise a media support including a wall and a base and a restraining extension extending in a first direction to constrain print media, when present, to a space below the restraining extension.

Abstract: A finisher apparatus includes an actuator to control a component of the finisher apparatus to perform a finishing operation on a print medium. A sensor is provided to sense the print medium in a print-medium path in the finisher apparatus. A processor is coupled to the actuator and the sensor. The processor is to execute instructions. The instructions are to actuate the actuator to eject the print medium from the print-medium path in response to a signal from the sensor indicative of a jam of the print medium in the finisher apparatus.

Abstract: Example printer finishing apparatus are described herein. An example printer disclosed herein includes an alignment guide, a track to align a sheet relative to the alignment guide, a clamp to move between a raised position and a lowered position relative to the sheet, and a force applicator coupled to the clamp. The force applicator is to cause the sheet to engage the alignment guide when the clamp is in the lowered position.

Abstract: An example damp can include a first post, a first clamping element rotatably oupled to the first post, a second post separate from the first post, a second clamping lement rotatably coupled to the second post, and a biasing device that couples the first lamping element to the second damping element.

Abstract: Systems and methods for fault detection, exclusion, isolation, and re-configuration of navigation sensors using an abstraction layer are provided. In certain embodiments, a system includes a plurality of sensors that provide redundant sensor measurements, wherein redundancy of the redundant sensor measurements is achieved based on an independence between measurements from different physical sensor units in the plurality of sensors. The system additionally includes a fusion function configured to receive the redundant sensor measurements from each sensor in the plurality of sensors and calculate fused navigation parameters. Further, the system includes an abstraction layer that calculates an estimated state based on the fused navigation parameters, wherein the estimated state comprises safety assessment information for the fused navigation parameters and the fused navigation parameters.

Abstract: An example system may comprise a media support including a wall and a base and a restraining extension extending in a first direction to constrain print media, when present, to a space below the restraining extension.

Abstract: A finisher apparatus includes an accumulator to register a print medium of a print job in preparation for a finishing operation, memory to store an attribute of the print job, and a processor coupled to the accumulator and the memory. The processor is to execute instructions. The instructions are to control the accumulator based on the attribute of the print job.

Abstract: Example printer finishing apparatus are described herein. An example printer disclosed herein includes an alignment guide, a track to align a sheet relative to the alignment guide, a clamp to move between a raised position and a lowered position relative to the sheet, and a force applicator coupled to the clamp. The force applicator is to cause the sheet to engage the alignment guide when the clamp is in the lowered position.

Abstract: An example damp can include a first post, a first clamping element rotatably coupled to the first post, a second post separate from the first post, a second clamping element rotatably coupled to the second post, and a biasing device that couples the first lamping element to the second damping element.

Abstract: Example described herein relate to a print shoes. For instance, a print shoe can include a body including a first surface, a first arm extending from the first surface and including a first mounting mechanism to couple to a spring, and a second arm extending from the first surface in a position substantially coplanar with the first arm, where the second arm includes a second mounting mechanism to couple to the spring and dispose the first arm a distance away from the second arm when coupled to the spring.

Abstract: A media registration system includes a puller clamp, and a puller track to support the puller clamp. The puller track is to open and close the puller clamp with movement of the puller clamp along the puller track.

Abstract: Example described herein relate to a print shoes. For instance, a print shoe can include a body including a first surface, a first arm extending from the first surface and including a first mounting mechanism to couple to a spring, and a second arm extending from the first surface in a position substantially coplanar with the first arm, where the second arm includes a second mounting mechanism to couple to the spring and dispose the first arm a distance away from the second arm when coupled to the spring.

Abstract: A finisher apparatus includes an accumulator to register a print medium of a print job in preparation for a finishing operation, memory to store an attribute of the print job, and a processor coupled to the accumulator and the memory. The processor is to execute instructions. The instructions are to control the accumulator based on the attribute of the print job.

Abstract: A finisher apparatus includes an actuator to control a component of the finisher apparatus to perform a finishing operation on a print medium. A sensor is provided to sense the print medium in a print-medium path in the finisher apparatus. A processor is coupled to the actuator and the sensor. The processor is to execute instructions. The instructions are to actuate the actuator to eject the print medium from the print-medium path in response to a signal from the sensor indicative of a jam of the print medium in the finisher apparatus.

Abstract: An example system includes an advancement mechanism to drive print media into a stacking region, a movable media guide arrangement and a controller. The movable media guide arrangement includes a pair of opposing media guides to receive opposing edges of a print medium therein and a translation mechanism to move the opposing media guides between at least two positions, the at least two positions including a deployed position and a retracted position. The controller is to actuate the translation mechanism to move the opposing media guides into the deployed position when the advancement mechanism transports a print medium into the stacking region and to actuate the translation mechanism to move the opposing media guides to the retracted position to release the print medium.

Abstract: An example system includes a stacking portion having a leading edge portion and a trailing edge portion, the stacking portion being to receive print media transported into the stacking portion in a direction from the trailing edge portion to the leading edge portion; a bar clamp extending longitudinally in the direction of transport of the print media; and a driver arrangement to selectively extend the bar clamp onto the stacking portion and to retract the bar clamp away from the stacking portion.

Abstract: An example system includes an advancement mechanism to drive print medium into a stacking region, a clamping mechanism, and a controller. The clamping mechanism includes a trailing edge clamping arrangement in a trailing edge portion of the stacking region and at least one downstream clamping arrangement in a downstream portion of the stacking region, the downstream portion being downstream of the trailing edge portion. The controller is to sequentially actuate the trailing edge clamping arrangement and the at least one downstream clamping arrangement when the advancement mechanism transports a print medium into the stacking region.

Abstract: A media tray may include a number of mezzanines to accumulate media as the media is ejected from a printing device and a number of ramps to selectively engage with a leading edge of the media as the media is accumulated based on a plurality of positions of the number of ramps, the number of ramps positionable based on movement of the number of mezzanines. In one example, movement of the number of mezzanines from a first position to a second position may cause the number of ramps to be in a position to selectively engage and disengage with a leading edge of the media.

Abstract: In one example, a system can include a media pathway to transport a media into a stacking region, a clamp pathway to move a clamp along the clamp pathway, and a registration surface. The registration surface may be positioned between an edge of the media pathway and the clamp pathway.