Abstract: Embodiments described herein provide ink recirculation capabilities for Drop-On-Demand (DOD) printing systems. One embodiment comprises a system that includes a controller, a DOD print head, an ink tank, an ink pump, and a recirculation cap. The ink pump transports ink from the ink tank to the DOD print head, and the recirculation cap captures ink ejected by the DOD print head. The recirculation cap also transports the capture ink to the ink tank. In response to detecting a start of an ink recirculation cycle, the controller collocates the recirculation cap proximate to nozzles of the DOD print head, and directs the DOD print head to begin ejecting ink through the nozzles into the recirculation cap for transport of the captured ink to the ink tank. The controller detects an end to the ink recirculation cycle, and directs the DOD print head to stop ejecting ink into the recirculation cap.

Abstract: Systems and methods for connector for supplying fluid to a print system. One system is an apparatus that includes a fluid supply station of a printer with a connector to couple with a fluid source for supplying fluid to at least one printhead of the printer. The connector includes an interface having a body with an end surface that corresponds with a face of a nozzle of the fluid source. The connector also includes an inlet protruding from the end surface and configured to enter an opening of the nozzle for receiving the fluid from the fluid source. The connector further includes communication circuitry disposed on the end surface and configured to establish a connection with corresponding communication circuitry disposed on the face of the nozzle of the fluid source when the inlet enters the opening of the nozzle and the end surface and the nozzle face align.

Abstract: Systems and methods for connector for supplying fluid to a print system. One system is an apparatus that includes a fluid supply station of a printer with a connector to couple with a fluid source for supplying fluid to at least one printhead of the printer. The connector includes an interface having a body with an end surface that corresponds with a face of a nozzle of the fluid source. The connector also includes an inlet protruding from the end surface and configured to enter an opening of the nozzle for receiving the fluid from the fluid source. The connector further includes communication circuitry disposed on the end surface and configured to establish a connection with corresponding communication circuitry disposed on the face of the nozzle of the fluid source when the inlet enters the opening of the nozzle and the end surface and the nozzle face align.

Abstract: A print engine is disclosed. The print engine includes a fusing system having a heat pipe to recover heat generated by the fusing system and transfer the recovered heat back into the fusing system.

Abstract: Provided is a printing device comprising a hot roller having an inside surface and an outside surface. A heating element is present within the hot roller. The inside surface has a first region, wherein the first region is coated with a first type of material. The inside surface has a second region, wherein the second region is coated with the first type of material, and wherein second region is of a different dimension than the first region. The inside surface has a third region, wherein the third region is coated with a second type of material.

Abstract: An electrophotographic printing system having an apparatus for improving image fidelity is disclosed. The electrophotographic printing system includes a photosensitive drum, a first and second retractors and a paper presser. The first and second retractors position a sheet of printing paper within a first and second predetermined distances, respectively, from the photosensitive drum. The paper presser, which is operatively secured to the second retractor, presses the printing paper firmly against the photosensitive drum when developed toner images on said photosensitive drum are being transferred onto the printing paper.