Abstract: A swirler for inducing swirl on a liquid flow includes a swirler body defining a downstream end and an upstream end; a plurality of axial slots on an external surface of the swirler body, each of the plurality of axial slots having a slot entrance and a slot exit; and a slot relief at the slot exit. Each of the plurality of axial slots are helical and configured to impart swirl on the liquid flow as the liquid flow traverses through each of the slots.

Abstract: A swirler for inducing swirl on a liquid flow includes a swirler body defining a downstream end and an upstream end; a plurality of axial slots on an external surface of the swirler body, each of the plurality of axial slots having a slot entrance and a slot exit; and a slot relief at the slot exit. Each of the plurality of axial slots are helical and configured to impart swirl on the liquid flow as the liquid flow traverses through each of the slots.

Abstract: In one embodiment, a method for printing a bar in a bar code includes computing a print resolution for printing the bar using Bar Width, Dot Size and Number of Dots where Bar Width is a desired width of the bar, Dot Size is a nominal dimension of each dot measured in a direction across the width of the bar and Number of Dots is a number of dots to be printed across the width of the bar, and adjusting a spacing between dots based on the computed print resolution.

Abstract: Embodiments including imager units are disclosed.

Abstract: A system includes a carrier, one or more printheads coupled with the carrier in a defined spatial relation, and alignment information associated with the carrier and identifying the defined spatial relation of one or more printheads.

Abstract: A method performed by an inkjet printing system is provided. The method comprises detecting an amount of use of a printhead and providing a request to service the printhead to a user in response to detecting the amount of use.

Abstract: A printing system includes an ink reservoir, a support, a fluid conduit and a printhead assembly. The fluid conduit is fluidly coupled to the ink reservoir and includes a first fluid coupler. The printhead assembly includes a body configured to be releasably coupled to the support, a plurality of printheads coupled to the body including a first printhead and a second printhead, and a fluid passage fluidly coupled to both the first printhead and the second printhead. The fluid passage includes a second fluid coupler releasably coupled to the first fluid coupler.

Abstract: In one embodiment, a method for printing a bar in a bar code includes computing a print resolution for printing the bar using Bar Width, Dot Size and Number of Dots where Bar Width is a desired width of the bar, Dot Size is a nominal dimension of each dot measured in a direction across the width of the bar and Number of Dots is a number of dots to be printed across the width of the bar, and adjusting a spacing between dots based on the computed print resolution.

Abstract: A system includes a carrier, one or more printheads coupled with the carrier in a defined spatial relation, and alignment information associated with the carrier and identifying the defined spatial relation of one or more printheads.

Abstract: A method for evaluating an image forming device includes forming an object on a print medium. A light beam is scanned along a scan line that intersects the object. Reflectance data corresponding to the scan line is obtained. The image forming device is evaluated according to the reflectance data.

Abstract: Various embodiments include methods and systems for monitoring a production line for non-printing events, and responsive to detecting an event, ascertaining whether an operation can be effected with an inkjet printer stationed along the production line.

Abstract: A printing system includes an ink reservoir, a support, a fluid conduit and a printhead assembly. The fluid conduit is fluidly coupled to the ink reservoir and includes a first fluid coupler. The printhead assembly includes a body configured to be releasably coupled to the support, a plurality of printheads coupled to the body including a first printhead and a second printhead, and a fluid passage fluidly coupled to both the first printhead and the second printhead. The fluid passage includes a second fluid coupler releasably coupled to the first fluid coupler.

Abstract: A printer with a carriage adapted to receive a printhead capable of printing an ink at an effective nozzle density along a medium advance axis. The printhead includes a plurality of substantially parallel columnar arrays of nozzles, each columnar array having an actual nozzle density along the medium advance axis less than the effective nozzle density. An alignment structure in the carriage orients the printhead to print at the actual nozzle density along the medium advance axis such that individual nozzles in different ones of the columnar arrays can deposit ink on a print medium in a row substantially orthogonal to the medium advance axis.

Abstract: Various embodiments comprise methods and systems for monitoring a production line for non-printing events, and responsive to detecting an event, ascertaining whether an operation can be effected with an inkjet printer stationed along the production line.

Abstract: A printer with a carriage adapted to receive a printhead capable of printing an ink at an effective nozzle density along a medium advance axis. The printhead includes a plurality of substantially parallel columnar arrays of nozzles, each columnar array having an actual nozzle density along the medium advance axis less than the effective nozzle density. An alignment structure in the carriage orients the printhead to print at the actual nozzle density along the medium advance axis such that individual nozzles in different ones of the columnar arrays can deposit ink on a print medium in a row substantially orthogonal to the medium advance axis.